Details of the Researcher

PHOTO

Kenji Tsuda
Section
Institute of Multidisciplinary Research for Advanced Materials
Job title
Professor
Degree

  • 博士（理学）（東北大学）

e-Rad No.
00241274
Researcher ID
P-8333-2014
Profile
Development of local crystal structure and electrostatic potential analysis using convergent-beam electron diffraction and its applications

Research History 7

  • 2023/04 - Present
    Tohoku University　Institute of Multidisciplinary Research for Advanced Materials Division of Measurements　Professor

  • 2016/04 - 2023/03
    Tohoku University　Frontier Research Institute for Interdisciplinary Sciences (FRIS)　Professor

  • 2007/04 - 2016/03
    Tohoku University　Institute of Multidisciplinary Research for Advanced Materials (IMRAM)　Associate Professor

  • 2001/11 - 2007/03
    Tohoku University　Institute of Multidisciplinary Research for Advanced Materials (IMRAM)　Associate Professor

  • 2001/04 - 2001/10
    Tohoku University　Institute of Multidisciplinary Research for Advanced Materials (IMRAM)　Research Associate

  • 1992/04 - 2001/03
    Tohoku University　Research Institute for Scientific Measurements (RISM)　Research Associate

  • 1991/04 - 1992/03
    日本学術振興会　特別研究員(DC)

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Education 3

  • Tohoku University　Graduate School of Science　Department of Physics, the degree of DCs in Physics

    1989/04 - 1991/11

  • Tohoku University　Graduate School of Science　Department of Physics, the degree of MSc in Physics

    1987/04 - 1989/03

  • Tohoku University　Faculty of Science　Department of Physics

    1983/04 - 1987/03

Committee Memberships 10

  • Japanese Society of Microscopy　Editor-in-chief of Microscopy

    2023/01 - Present

  • The Japanese Society of Microscopy　Board member

    2021/06 - Present

  • 日本誘電体学会　運営委員

    2016/05 - Present

  • 日本顕微鏡学会　代議員

    2013/05 - Present

  • Japanese Society of Microscopy　Vice president

    2023/06 - 2025/06

  • Japanese Society of Microscopy　Co-editor-in-chief of Microscopy

    2019/01 - 2022/12

  • International Union of Crystallography　Co-editor of Acta Crystallographica section A

    2011/08 - 2020/12

  • 日本物理学会領域10　誘電体運営委員

    2017/04 - 2018/03

  • 日本顕微鏡学会, 電子顕微鏡大学　実行委員

    2014/10 - 2018/03

  • International Union of Crystallography　Member of Commission on Electron Crystallography

    2011/01 - 2017/08

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Professional Memberships 3

  • 日本顕微鏡学会

  • 日本結晶学会

  • 日本物理学会

Research Interests 9

  • Interface and non-uniform structures

  • semiconductor

  • 4D-STEM

  • ferroelectrics

  • Transmission Electron Microscopy

  • Structural phase transformation

  • Local crystal structure analysis

  • Convergent-beam electron diffraction (CBED)

  • Electron crystallography

Research Areas 5

  • Nanotechnology/Materials / Crystal engineering /

  • Nanotechnology/Materials / Applied materials /

  • Nanotechnology/Materials / Nanostructure physics /

  • Nanotechnology/Materials / Nanostructure chemistry /

  • Natural sciences / Semiconductors, optical and atomic physics /

Awards 5

  1. Research Award of the Crystallographic Society of Japan

    2010/10　The Crystallographic Society of Japan　分光収束電子回折法による精密結晶構造解析法の開発

  2. Award of the Society of promotion of Scientific measurements

    2009/12　財団法人科学計測振興会　分光収束電子回折法による精密結晶構造解析法の開発

  3. The Japanese Society of Microscopy Seto Prize

    2004/06/09　日本顕微鏡学会　収束電子回折法による精密結晶構造・電子密度解析法の開発と応用

  4. Harada Research Award

    1993/07/05　金属研究助成会　収束電子回折法による結晶構造解析法の開発

  5. Reserch Award of Inoue Foundation for Science

    1993/02/04　井上科学振興財団　収束電子回折法による結晶構造解析法の開発

Papers 173

  1. Electric-field response of polar nanodomains in BaTiO3 Peer-reviewed

    D. Morikawa, K. Tsuda

    Applied Physics Letters　119　(5)　052904-052904　2021/08/02

    Publisher: AIP Publishing

    DOI： 10.1063/5.0058977 　

    ISSN： 0003-6951

    eISSN： 1077-3118

  2. Direct observation of the symmetry breaking of the nanometer-scale local structure in the paraelectric cubic phase of BaTiO3 using convergent-beam electron diffraction Peer-reviewed

    Kenji Tsuda, Michiyoshi Tanaka

    APPLIED PHYSICS EXPRESS　9　(7)　071501-1-071501-4　2016/07

    DOI： 10.7567/APEX.9.071501 　

    ISSN： 1882-0778

    eISSN： 1882-0786

  3. Two-dimensional mapping of polarizations of rhombohedral nanostructures in the tetragonal phase of BaTiO3 by the combined use of the scanning transmission electron microscopy and convergent-beam electron diffraction methods Peer-reviewed

    Kenji Tsuda, Akira Yasuhara, Michiyoshi Tanaka

    APPLIED PHYSICS LETTERS　103　(8)　082908-1-4　2013/08

    DOI： 10.1063/1.4819221 　

    ISSN： 0003-6951

  4. Nanoscale local structures of rhombohedral symmetry in the orthorhombic and tetragonal phases of BaTiO3 studied by convergent-beam electron diffraction Peer-reviewed

    Kenji Tsuda, Rikiya Sano, Michiyoshi Tanaka

    PHYSICAL REVIEW B　86　(21)　214106-1-5　2012/12

    DOI： 10.1103/PhysRevB.86.214106 　

    ISSN： 1098-0121

  5. Direct observation of orbital ordering in the spinel oxide FeCr2O4 through electrostatic potential using convergent-beam electron diffraction Peer-reviewed

    K. Tsuda, D. Morikawa, Y. Watanabe, S. Ohtani, T. Arima

    PHYSICAL REVIEW B　81　(18)　180102-1-180102-4　2010/05

    DOI： 10.1103/PhysRevB.81.180102 　

    ISSN： 1098-0121

  6. Determination of the electrostatic potential and electron density of silicon using convergent-beam electron diffraction Peer-reviewed

    Yoichiro Ogata, Kenji Tsuda, Michiyoshi Tanaka

    ACTA CRYSTALLOGRAPHICA SECTION A　64　587-597　2008/09

    DOI： 10.1107/S0108767308021338 　

    ISSN： 0108-7673

  7. Refinement of crystal structural parameters using two-dimensional energy-filtered CBED patterns Peer-reviewed

    Kenji Tsuda, Michiyoshi Tanaka

    Acta Crystallographica Section A: Foundations of Crystallography　55　(5)　939-954　1999

    Publisher: Blackwell Publishing Ltd

    DOI： 10.1107/S0108767399005401 　

    ISSN： 0108-7673

  8. Crystal structures and phase stability of antiferroelectric R phases in undoped and Ca-modified sodium niobates

    Seiyu Aso, Hiroki Matsuo, Yasuhiro Yoneda, Daisuke Morikawa, Kenji Tsuda, Kenji Ohoyama, Toru Ishigaki, Yuji Noguchi

    Physical Review B　2025/05/19

    DOI： 10.1103/PhysRevB.111.174114 　

  9. Local structure analysis using nano-electron probe Peer-reviewed

    Kenji Tsuda and Daisuke Morikawa

    68　(3)　111-116　2023/12/30

    DOI： 10.11410/kenbikyo.58.3_111 　

    ISSN： 1349-0958 2434-2386

  10. Determination of the crystal structures of NdBaMn2O6 : Coexisting polar and nonpolar phases Peer-reviewed

    Md Shafiqul Islam, Daisuke Morikawa, Shigeki Yamada, Bikas Aryal, Kenji Tsuda, Masami Terauchi

    Physical Review B　108　L060104-1-L060104-6　2023/08/25

    DOI： 10.1103/PhysRevB.108.L060104 　

  11. High Oxide‐Ion Conductivity through the Interstitial Oxygen Site in Sillén Oxychlorides Peer-reviewed

    Hiroshi Yaguchi, Daisuke Morikawa, Takashi Saito, Kenji Tsuda, Masatomo Yashima

    Advanced Functional Materials　2023/07

    DOI： 10.1002/adfm.202214082 　

  12. Direct observation of rotation of polarization at 90-degree domain walls in BaTiO3 Peer-reviewed

    Daisuke Morikawa, Yuji Noguchi, Kenji Tsuda

    Japanese Journal of Applied Physics　62　(SM)　SM1003-SM1003　2023/06/14

    Publisher: {IOP} Publishing

    DOI： 10.35848/1347-4065/acde5b 　

    ISSN： 0021-4922 1347-4065

    eISSN： 1347-4065

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    <jats:title>Abstract</jats:title> <jats:p>The rotation of polarization at 90-degree domain walls in tetragonal BaTiO<jats:sub>3</jats:sub> was directly observed by the STEM-CBED method, which combines scanning transmission electron microscopy (STEM) and convergent-beam electron diffraction (CBED). The CBED patterns in the domain wall region exhibit continuous changes in intensity distribution within discs and specific features corresponding to the direction of the rotation of polarization. Simulations were performed using hypothetical superstructures created by continuously connecting Ti displacement with a 90-degree rotation and showed good qualitative agreement with the experimental patterns. The quantitative evaluation of the mirror symmetries existing in the tetragonal structure in bulk form revealed the width of the domain wall is approximately 9 nm. While distorted regions with slightly broken symmetry in CBED disks were found to extend further on both sides of the domain wall region in 6-7 nm. This finding can explain the discrepancy in the domain wall widths reported in previous studies.</jats:p>

  13. Temperature dependence of crystal growth behavior of AlN on Ni–Al using electromagnetic levitation and computer vision technique Peer-reviewed

    Masayoshi Adachi, Sonoko Hamaya, Daisuke Morikawa, Benjamin G. Pierce, Ahmad M. Karimi, Yuji Yamagata, Kenji Tsuda, Roger H. French, Hiroyuki Fukuyama

    Materials Science in Semiconductor Processing　153　107167-107167　2023/01

    Publisher: Elsevier BV

    DOI： 10.1016/j.mssp.2022.107167 　

    ISSN： 1369-8001

  14. Nickel-aluminium bronze cast into 3D sand printed moulds: Kappa II phase and segregation of phosphorus Peer-reviewed

    S. Nusen, T. Chairuangsri, D. Morikawa, K. Tsuda, J.T.H. Pearce

    Materialia　26　101631-101631　2022/12

    Publisher: Elsevier BV

    DOI： 10.1016/j.mtla.2022.101631 　

    ISSN： 2589-1529

  15. Coexisting Z-type charge and bond order in metallic NaRu2O4 Peer-reviewed

    Arvind Kumar Yogi, Alex, er Yaresko, C. I. Sathish, Hasung Sim, Daisuke Morikawa, Juergen Nuss, Kenji Tsuda, Yukio. Noda, Daniel I. Khomskii, Je-Geun Park

    Communications Materials　3　(1)　2022/12

    Publisher: Springer Science and Business Media {LLC}

    DOI： 10.1038/s43246-022-00224-8 　

    ISSN： 2662-4443

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    <jats:title>Abstract</jats:title><jats:p>How particular bonds form in quantum materials has been a long-standing puzzle. Two key concepts dealing with charge degrees of freedom are dimerization (forming metal-metal bonds) and charge ordering. Since the 1930s, these two concepts have been frequently invoked to explain numerous exciting quantum materials, typically insulators. Here we report dimerization and charge ordering within the dimers coexisting in metallic NaRu<jats:sub>2</jats:sub>O<jats:sub>4</jats:sub>. By combining high-resolution x-ray diffraction studies and theoretical calculations, we demonstrate that this unique phenomenon occurs through a new type of bonding, which we call Z-type ordering. The low-temperature superstructure has strong dimerization in legs of zigzag ladders, with short dimers in legs connected by short zigzag bonds, forming Z-shape clusters: simultaneously, site-centered charge ordering also appears. Our results demonstrate the yet unknown flexibility of quantum materials with the intricate interplay among orbital, charge, and lattice degrees of freedom.</jats:p>

  16. Space group determination and first-principles structure optimization of the A -site ordered perovskite-type manganite NdBaMn2O6 Peer-reviewed

    Md Shafiqul Islam, Daisuke Morikawa, Shigeki Yamada, Bikas Aryal, Kenji Tsuda, Masami Terauchi

    Physical Review B　105　(17)　2022/05/31

    Publisher: American Physical Society (APS)

    DOI： 10.1103/PhysRevB.105.174114 　

    ISSN： 2469-9950

    eISSN： 2469-9969

  17. Transmission electron microscopy of precipitation in fine-grained heat-affected zone of Grade91 steel weld during creep exposure Peer-reviewed

    Somporn Peansukmanee, Isaratat Phung-on, Bovornchok Poopat, John T.H. Pearce, Kenji Tsuda, Sankum Nusen, Torranin Chairuangsri

    Micron　155　103216-103216　2022/04

    Publisher: Elsevier BV

    DOI： 10.1016/j.micron.2022.103216 　

    ISSN： 0968-4328

  18. Nanodiffraction Imaging of Polymer Crystals Peer-reviewed

    Shusuke Kanomi, Hironori Marubayashi, Tomohiro Miyata, Kenji Tsuda, Hiroshi Jinnai

    Macromolecules　54　(13)　6028-6037　2021/07/13

    Publisher: American Chemical Society ({ACS})

    DOI： 10.1021/acs.macromol.1c00683 　

    ISSN： 0024-9297

    eISSN： 1520-5835

  19. Improvement of precision in refinements of structure factors using convergent-beam electron diffraction patterns taken at Bragg-excited conditions Peer-reviewed

    B. Aryal, D. Morikawa, K. Tsuda, M. Terauchi

    Acta Crystallographica Section A Foundations and Advances　77　(4)　289-295　2021/07/01

    Publisher: International Union of Crystallography ({IUCr})

    DOI： 10.1107/s2053273321004137 　

    ISSN： 2053-2733

    eISSN： 2053-2733

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    <jats:p>A local structure analysis method based on convergent-beam electron diffraction (CBED) has been used for refining isotropic atomic displacement parameters and five low-order structure factors with sin θ/λ ≤ 0.28 Å<jats:sup>−1</jats:sup> of potassium tantalate (KTaO<jats:sub>3</jats:sub>). Comparison between structure factors determined from CBED patterns taken at the zone-axis (ZA) and Bragg-excited conditions is made in order to discuss their precision and sensitivities. Bragg-excited CBED patterns showed higher precision in the refinement of structure factors than ZA patterns. Consistency between higher precision and sensitivity of the Bragg-excited CBED patterns has been found only for structure factors of the outer zeroth-order Laue-zone reflections with larger reciprocal-lattice vectors. Correlation coefficients among the refined structure factors in the refinement of Bragg-excited patterns are smaller than those of the ZA ones. Such smaller correlation coefficients lead to higher precision in the refinement of structure factors.</jats:p>

  20. Recent Development of Structure Analysis Using Convergent-Beam Electron Diffraction Peer-reviewed

    Daisuke MORIKAWA, Kenji TSUDA

    Nihon Kessho Gakkaishi　63　(2)　135-142　2021/05/31

    Publisher: The Crystallographic Society of Japan

    DOI： 10.5940/jcrsj.63.135 　

    ISSN： 0369-4585

    eISSN： 1884-5576

  21. Local crystal symmetry and structure at CaTiO3 twin boundaries Peer-reviewed

    D. Morikawa, K. Tsuda

    Applied Physics Letters　118　(9)　092901-092901　2021/03/01

    Publisher: {AIP} Publishing

    DOI： 10.1063/5.0043851 　

    ISSN： 0003-6951

    eISSN： 1077-3118

  22. Evaluation of TEM specimen quality prepared by focused ion beam using symmetry breaking index of convergent-beam electron diffraction Peer-reviewed

    Daisuke Morikawa, Masaki Ageishi, Kaori Sato, Kenji Tsuda, Masami Terauchi

    Microscopy　2021/01/15

    Publisher: Oxford University Press ({OUP})

    DOI： 10.1093/jmicro/dfab002 　

    ISSN： 2050-5698

    eISSN： 2050-5701

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    <title>Abstract</title> Degradation of crystalline quality of TEM specimens of silicon prepared with different conditions have been examined using convergent-beam electron diffraction (CBED). Those specimens are prepared using focused-ion-beam (FIB) with different accelerating voltages, Ar-ion milling, and crushing method. Symmetry breaking of CBED patterns was evaluated quantitatively by symmetry breaking index S, which has been already reported. It is clarified that the degradation and inhomogeneity of FIB specimen was suppressed by decreasing the accelerating voltages of FIB fabrication at the final process.

  23. Visualization of ferroaxial domains in an order-disorder type ferroaxial crystal Peer-reviewed

    T. Hayashida, Y. Uemura, K. Kimura, S. Matsuoka, D. Morikawa, S. Hirose, K. Tsuda, T. Hasegawa, T. Kimura

    Nature Communications　11　(1)　2020/12

    Publisher: Springer Science and Business Media LLC

    DOI： 10.1038/s41467-020-18408-6 　

    eISSN： 2041-1723

  24. Structural-transition-driven antiferromagnetic to spin-glass transition in Cd–Mg–Tb 1/1 approximants Peer-reviewed

    Farid Labib, Daisuke Okuyama, Nobuhisa Fujita, Tsunetomo Yamada, Satoshi Ohhashi, Daisuke Morikawa, Kenji Tsuda, Taku J Sato, An-Pang Tsai

    Journal of Physics: Condensed Matter　32　(48)　485801-485801　2020/11/18

    Publisher: IOP Publishing

    DOI： 10.1088/1361-648x/aba921 　

    ISSN： 0953-8984

    eISSN： 1361-648X

  25. Evaluation of accuracy in the determination of crystal structure factors using large-angle convergent-beam electron diffraction patterns International-journal Peer-reviewed

    Daisuke Morikawa, Kenji Tsuda

    Microscopy　2020/07/21

    Publisher: Oxford University Press (OUP)

    DOI： 10.1093/jmicro/dfaa041 　

    ISSN： 2050-5698

    eISSN： 2050-5701

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    <title>Abstract</title> The accuracy of electron density distribution analysis using large-angle convergent-beam electron diffraction (LACBED) patterns is evaluated for different convergence angles. An orbital ordered state of FeCr2O4 is used as an example of the analysis. Ideal orbital-ordered and non-ordered states are simulated by using orbital scattering factors. LACBED patterns calculated for the orbital-ordered state were used as hypothetical experimental data sets. Electron density distribution of the Fe 3d orbitals has been successfully reconstructed with a higher accuracy from LACBED patterns with convergence angles larger than 15.2 mrad, which is 4 times as large as that for conventional convergent-beam electron diffraction patterns. Excitation of particular Bloch waves with the aid of LACBED patterns has a key role in the accurate analysis of electron density distributions.

  26. Electron diffraction study of crystal structures of (Sr1-xBax)2Nb2O7 Peer-reviewed

    Bikas Aryal, Daisuke Morikawa, Kenji Tsuda, Shinya Tsukada, Yukikuni Akishige, Masami Terauchi

    Physical Review Materials　3　(4)　044405-1-044405-6　2019/04

    DOI： 10.1103/PhysRevMaterials.3.044405 　

    ISSN： 2475-9953

  27. Investigation of the arrangement of oxide ion vacancies and their effect on the crystal structure of BaFe<inf>0.9</inf>In<inf>0.1</inf>O<inf>3−</inf><inf>δ</inf> Peer-reviewed

    Fujishiro, F., Sasaoka, C., Shibata, Y., Tsuda, K., Hashimoto, T.

    Journal of the American Ceramic Society　102　(8)　4427-4430　2019/03

    DOI： 10.1111/jace.16470 　

  28. Direct observation of Mn and Ni ordering in LiMn<inf>1.5</inf>Ni<inf>0.5</inf>O<inf>4</inf> using atomic resolution scanning transmission electron microscopy Peer-reviewed

    Okamoto, R., Hayashi, K., Matsumoto, S., Suzuki, N., Terauchi, M., Tsuda, K.

    Microscopy　67　(5)　280-285　2018/10

    DOI： 10.1093/jmicro/dfy034 　

  29. Nanometer-scale local structural study of the paraelectric cubic phase of KNbO3 by convergent-beam electron diffraction Peer-reviewed

    Kenji Tsuda, Michiyoshi Tanaka

    JAPANESE JOURNAL OF APPLIED PHYSICS　56　(10)　10PB09-1-10PB09-4　2017/10

    DOI： 10.7567/JJAP.56.10PB09 　

    ISSN： 0021-4922

    eISSN： 1347-4065

  30. Mapping Of Nanoscale Structural Fluctuations In Ferroelectric BaTiO3 Using STEM-CBED

    Kenji Tsuda

    Microscopy and Microanalysis　22 Suppl. S3　468-469　2016/08

    DOI： 10.1017/S1431927616003196 　

  31. Structure refinements of the LPSO-Mg alloys based on STEM imaging combined with CBED

    Kenya Yamashita, Koji Inoue, Kosuke Nagai, Kenji Tsuda, Eiji Abe

    Microscopy　64 suppl 1　i108　2015/11/24

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    1631

  32. Two-dimensional mapping of polarizations of rhombohedral nanostructures in the orthorhombic phase of KNbO3 by the combined use of scanning transmission electron microscopy and convergent-beam electron diffraction Peer-reviewed

    Kenji Tsuda, Michiyoshi Tanaka

    APPLIED PHYSICS EXPRESS　8　(8)　2015/08

    DOI： 10.7567/APEX.8.081501 　

    ISSN： 1882-0778

    eISSN： 1882-0786

  33. Two-dimensional mapping of local structural fluctuations in the orthorhombic phase of KNbO3 by the combined use of the scanning transmission electron microscopy and convergent-beam electron diffraction Peer-reviewed

    Kenji Tsuda, Michiyoshi Tanaka

    Applied Physics Express　8　081501-1-081501-4　2015/07

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    8536

  34. Convergent-Beam Electron Diffraction Study of Local Structural Fluctuations in Perovskite-Type Ferroelectrics

    Tsuda, K.

    Microscopy and Microanalysis　21　(S3)　2015

    DOI： 10.1017/S1431927615001397 　

  35. Effects of W on microstructure of as-cast 28 wt.%Cr-2.6 wt.%C-(0-10) wt.%W irons Peer-reviewed

    S. Imurai, C. Thanachayanont, J. T. H. Pearce, K. Tsuda, T. Chairuangsri

    MATERIALS CHARACTERIZATION　99　52-60　2015/01

    DOI： 10.1016/j.matchar.2014.11.012 　

    ISSN： 1044-5803

    eISSN： 1873-4189

  36. Van der Waals epitaxial growth of topological insulator Bi2-xSbxTe3-ySey ultrathin nanoplate on electrically insulating fluorophlogopite mica Peer-reviewed

    Ngoc Han Tu, Yoichi Tanabe, Khuong Kim Huynh, Yohei Sato, Hidetoshi Oguro, Satoshi Heguri, Kenji Tsuda, Masami Terauchi, Kazuo Watanabe, Katsumi Tanigaki

    APPLIED PHYSICS LETTERS　105　(6)　2014/08

    DOI： 10.1063/1.4892576 　

    ISSN： 0003-6951

    eISSN： 1077-3118

  37. Effects of Mo on microstructure of as-cast 28 wt.% Cr-2.6 wt.% C-(0-10) wt.% Mo irons Peer-reviewed

    S. Imurai, C. Thanachayanont, J. T. H. Pearce, K. Tsuda, T. Chairuangsri

    MATERIALS CHARACTERIZATION　90　(90)　99-112　2014/04

    DOI： 10.1016/j.matchar.2014.01.014 　

    ISSN： 1044-5803

    eISSN： 1873-4189

  38. A ferroelectric-like structural transition in a metal Peer-reviewed

    Youguo Shi, Yanfeng Guo, Xia Wang, Andrew J. Princep, Dmitry Khalyavin, Pascal Manuel, Yuichi Michiue, Akira Sato, Kenji Tsuda, Shan Yu, Masao Arai, Yuichi Shirako, Masaki Akaogi, Nanlin Wang, Kazunari Yamaura, Andrew T. Boothroyd

    Nature Materials　12　(11)　1024-1027　2013/11

    DOI： 10.1038/nmat3754 　

    ISSN： 1476-1122 1476-4660

  39. Convergent-beam electron diffraction study of the local structure of the tetragonal phase of PbTiO3 Peer-reviewed

    Kenji Tsuda, Michiyoshi Tanaka

    Applied Physics Express　6　(10)　101501-1-101501-3　2013/10

    DOI： 10.7567/APEX.6.101501 　

    ISSN： 1882-0778 1882-0786

  40. High-Quality AlN Layer Homoepitaxially Grown on Nitrided a-Plane Sapphire Using a Ga-Al Flux Peer-reviewed

    Masayoshi Adachi, Kenji Tsuda, Masashi Sugiyama, Junji Iida, Akikazu Tanaka, Hiroyuki Fukuyama

    APPLIED PHYSICS EXPRESS　6　(9)　091001-1-3　2013/09

    DOI： 10.7567/APEX.6.091001 　

    ISSN： 1882-0778

    eISSN： 1882-0786

  41. Analysis of Broken Symmetry in Convergent-Beam Electron Diffraction along &lt; 11(2)over-bar0 &gt; and &lt; 1(1)over-bar00 &gt; Zone-Axes of AlN for Polarity Determination Peer-reviewed

    Masataka Imura, Ujjal Gautam, Kiyomi Nakajima, Yasuo Koide, Hiroshi Amano, Kenji Tsuda

    JAPANESE JOURNAL OF APPLIED PHYSICS　52　(8)　08JE15-1-4　2013/08

    DOI： 10.7567/JJAP.52.08JE15 　

    ISSN： 0021-4922

  42. Observation of rhombohedral nanostructures in the orthorhombic phase of KNbO3 using convergent-beam electron diffraction Peer-reviewed

    Kenji Tsuda, Rikiya Sano, Michiyoshi Tanaka

    APPLIED PHYSICS LETTERS　102　(5)　051913-1-4　2013/02

    DOI： 10.1063/1.4791679 　

    ISSN： 0003-6951

  43. Analysis of the Dislocation and Polarity in an AlN Layer Grown Using Ga-Al Flux Peer-reviewed

    Masayoshi Adachi, Mari Takasugi, Daisuke Morikawa, Kenji Tsuda, Akikazu Tanaka, Hiroyuki Fukuyama

    APPLIED PHYSICS EXPRESS　5　(10)　101001-1-101001-3　2012/10

    DOI： 10.1143/APEX.5.101001 　

    ISSN： 1882-0778

  44. Charge and Orbital Order Patterns in an A-Site Ordered Perovskite-Type Manganite SmBaMn2O6 Determined by Convergent-Beam Electron Diffraction Peer-reviewed

    Daisuke Morikawa, Kenji Tsuda, Youichi Maeda, Shigeki Yamada, Taka-hisa Arima

    JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN　81　(9)　2012/09

    DOI： 10.1143/JPSJ.81.093602 　

    ISSN： 0031-9015

  45. Experimental charge density of hematite in its magnetic low temperature and high temperature phases Peer-reviewed

    R. Theissmann, H. Fuess, K. Tsuda

    ULTRAMICROSCOPY　120　1-9　2012/09

    DOI： 10.1016/j.ultramic.2012.04.006 　

    ISSN： 0304-3991

  46. Electrostatic potential analysis of the rhombohedral phase of ferroelectric BaTiO3 using CBED

    K. Tsuda, R. Sano, M. Tanaka

    Acta Crystallographica A　67 (suppl)　C176　2011/08/22

  47. Structure analysis of charge-orbital ordered phases in A-site ordered SmBaMn2O6 using CBED

    D. Morikawa, K. Tsuda, S. Yamada, T. Arima

    Acta Crystallographica A　67 (suppl)　C697-C697　2011/08/22

    DOI： 10.1107/S0108767311082353 　

    ISSN： 2053-2733

  48. 電子プローブを用いた構造・物性解析手法の開発と応用 Peer-reviewed

    寺内正己, 津田健治, 佐藤庸平

    Materials Integration　24　(4&5)　208-211　2011/04

    Publisher:

    ISSN： 1344-7858

    More details Close

    7217

  49. Structure of Ferroelectric Silver Niobate AgNbO3 Peer-reviewed

    Masatomo Yashima, Shota Matsuyama, Rikiya Sano, Mitsuru Itoh, Kenji Tsuda, Desheng Fu

    CHEMISTRY OF MATERIALS　23　(7)　1643-1645　2011/04

    DOI： 10.1021/cm103389q 　

    ISSN： 0897-4756

  50. Electrostatic potential analysis of ferroelectric LiNbO3 using convergent-beam electron diffraction

    Kenji Tsuda

    Proc. of 17th International Microscopy Congress (IMC17)　2010/09/19

  51. Charge density of PbTiO3 reconstructed from refined low order structure factors using CBED-data

    R. Schierholz, K. Tsuda, H.Fuess

    Proc. of 17th International Microscopy Congress (IMC17)　2010/09/19

  52. Mapping intrinsic electric fields through off-axis electron holography: prospects and problems Invited

    F. Roeder, D. Wolf, A. Lubk, M. Linck, K. Vogel, A. Lenk, K. Tsuda, H. Lichte

    Microsc. Microanal.　16　582-583　2010/08/01

  53. Electrostatic potential analysis of ferroelectrics using convergent-beam electron diffraction and electron holography

    K. Tsuda, F. Roeder, A. Lubk, D. Wolf, D. Geiger, H. Lichte

    AMTC letters　2　96-97　2010/06/24

  54. Refinement of the 200 structure factor for GaAs using parallel and convergent beam electron nanodiffraction data Peer-reviewed

    Knut Mueller, Marco Schowalter, Jacob Jansen, Kenji Tsuda, John Titantah, Dirk Lamoen, Andreas Rosenauer

    ULTRAMICROSCOPY　109　(7)　802-814　2009/06

    DOI： 10.1016/j.ultramic.2009.03.029 　

    ISSN： 0304-3991

  55. Study of crystal and electronic structures of boron nanobelt using convergent-beam electron diffraction and electron energy-loss spectroscopy

    K. Tsuda, D. Morikawa, K. Iwasaki, Y. Sato, M. Terauchi, K. Kirihara, K. Kawaguchi, T. Sasaki, N. Koshizaki, H. Hyodo, K. Kimura

    Abstract of 15th International Symposium on Intercalation Compounds　2009/05/14

  56. Construction of Structural Phase Diagram of LaGa1-xMgxO3-delta by Using Various Diffraction Measurements and Thermal Analyses -Effect of Long Period Anti-Phase Domain Structure on Phase Diagram- Peer-reviewed

    Takeshi Ohzeki, Yoichiro Ogata, Kenji Tsuda, Takuya Hashimoto

    ELECTROCHEMISTRY　77　(2)　169-177　2009/02

    DOI： 10.5796/electrochemistry.77.169 　

    ISSN： 1344-3542

  57. A transmission electron microscopy study on the real structure of synthetic hematite Peer-reviewed

    Theissmann, R., Fuess, H., Tsuda, K., Terauchi, M.

    Journal of Materials Science　44　(5)　-1718-3　2009

    DOI： 10.1007/s10853-007-1718-3 　

  58. Re-examination of the crystal structure of the beta-pyrochlore oxide superconductor KOs2O6 by X-ray and convergent-beam electron diffraction analyses Peer-reviewed

    Jun-Ichi Yamaura, Zenji Hiroi, Kenji Tsuda, Koichi Izawa, Yasuo Ohishi, Satoshi Tsutsui

    SOLID STATE COMMUNICATIONS　149　(1-2)　31-34　2009/01

    DOI： 10.1016/j.ssc.2008.10.029 　

    ISSN： 0038-1098

  59. An analysis of crystal structure of Ca-deficient oxonitridoaluminosilicate, Ca0.88Al0.91Si1.09N2.85O0.15 Peer-reviewed

    Kyota Uheda, Hajime Yamamoto, Hisanori Yamane, Wataru Inami, Kenji Tsuda, Yoshinobu Yamamoto, Naoto Hirosaki

    JOURNAL OF THE CERAMIC SOCIETY OF JAPAN　117　(1361)　94-98　2009/01

    DOI： 10.2109/jcersj2.117.94 　

    ISSN： 1882-0743

    eISSN： 1348-6535

  60. Analysis of phase transition and expansion behaviour of Al(2)(WO(4))(3) by temperature-regulated X-ray diffraction Peer-reviewed

    Takuya Hashimoto, Takayuki Sugimoto, Kazuki Omoto, Nanami Kineri, Yoichiro Ogata, Kenji Tsuda

    PHYSICA STATUS SOLIDI B-BASIC SOLID STATE PHYSICS　245　(11)　2504-2508　2008/11

    DOI： 10.1002/pssb.200880258 　

    ISSN： 0370-1972

  61. Convergent-beam electron diffraction study of boron nanobelts

    Kenji Tsuda, Keisuke Iwasaki, Yohei Sato, Masami Terauchi, Kaoru Kimura

    Abstract of ISBB2008　127　2008/09/07

  62. The system of PbZr1-xTixO3 studied by convergent-beam electron diffraction Peer-reviewed

    Roland Schierholz, Ralf Theissmann, Hartmut Fuess, Kenji Tsuda, Masami Terauchi

    Acta Cryst A　64　145　2008/08/23

  63. Determination of chiral indices of carbon nanotubes using electron diffraction pattern

    Y. Sato, K. Tsuda, M. Terauchi, Y. Saito

    Acta Cryst. A　64　605-606　2008/08/23

  64. Mechanism of Formation of AlN Film by Sapphire Nitridation and Polarity Determination

    H.Fukuyama, T.Aikawa, H.Kobatake, K.Tsuda, M.Terauchi, K.Hiraga, K. Takada

    Abstract of 2nd International Symposium on Growth of III Nitrides　2008/07/06

  65. Crystal symmetry in single domains of PbZr0.54Ti0.46O3 Peer-reviewed

    Roland Schierholz, Hartmut Fuess, Kenji Tsuda, Yoishiro Ogata, Masami Terauchi, Ralf Theissmann

    PHYSICAL REVIEW B　78　(2)　024118-1-024118-7　2008/07

    DOI： 10.1103/PhysRevB.78.024118 　

    ISSN： 1098-0121

    eISSN： 1550-235X

  66. Space group determination of Al-2(WO4)(3) using convergent-beam electron diffraction Peer-reviewed

    Yoichiro Ogata, Kenji Tsuda, Takuya Hashimoto

    JAPANESE JOURNAL OF APPLIED PHYSICS　47　(6)　4664-4668　2008/06

    DOI： 10.1143/JJAP.47.4664 　

    ISSN： 0021-4922

  67. Selected area and convergent-beam electron diffraction of LaGaO3 and LaGa0.9Mg0.1O2.95 - Space group determinations and identification of anti-phase domain structure Peer-reviewed

    Yoichiro Ogata, Kenji Tsuda, Mutsumi Yamaguchi, Takayuki Fumoto, Tatsuya Furuya, Takuya Hashimoto

    SOLID STATE IONICS　178　(15-18)　1113-1121　2007/06

    DOI： 10.1016/j.ssi.2007.05.012 　

    ISSN： 0167-2738

  68. Strain analysis of arsenic-doped silicon using CBED rocking curves of low-order reflections Peer-reviewed

    Kenji Tsuda, Hajime Mitsuishi, Masami Terauchi, Kazuo Kawamura

    JOURNAL OF ELECTRON MICROSCOPY　56　(2)　57-61　2007/04

    DOI： 10.1093/jmicro/dfm006 　

    ISSN： 0022-0744

  69. Magnetic properties of LaMnO3+delta nanocrystals in MCM-41 mesoporous silica Peer-reviewed

    H. Kira, H. Tamura, Y. Ando, M. Onodera, H. Nakao, Y. Murakami, K. Tsuda, K. Ohoyama, S. Yamazaki, T. Tajiri, H. Deguchi

    JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS　310　(2)　2480-2482　2007/03

    DOI： 10.1016/j.jmmm.2006.11.021 　

    ISSN： 0304-8853

  70. Novel size effect of LaMnO3+delta nanocrystals embeded in SBA-15 mesoporous silica Peer-reviewed

    Takayuki Tajiri, Hiroyuki Deguchi, Shigemi Kohiki, Masaki Mito, Seishi Takagi, Kenji Tsuda, Youichi Murakami

    JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN　75　(11)　113704-1-113704-4　2006/11

    DOI： 10.1143/JPSJ.75.113704 　

    ISSN： 0031-9015

  71. Monochromator for a 200kV Analytical Electron Microscope Peer-reviewed

    M. Mukai, W. Inami, K. Omoto, T. Kaneyama, T. Tomita, K. Tsuno, M. Terauchi, K. Tsuda, M. Naruse, T. Honda, M. Tanaka

    Proceedings of the 16th International Microscopy Congress (IMC16),　860　2006/09

  72. Monochromator for a 200 kV analytical electron microscope Peer-reviewed

    M. Mukai, W. Inami, K. Omoto, T. Kaneyama, T. Tomita, K. Tsuno, M. Terauchi, K. Tsuda, M. Naruse, T. Honda, M. Tanaka

    Microscopy and Microanalysis　12　(2)　1206-1207　2006/08

    DOI： 10.1017/S1431927606064816 　

    ISSN： 1431-9276 1435-8115

  73. Local lattice parameter determination of a silicon (001) layer grown on a sapphire (1(1)over-bar-02) substrate using convergent-beam electron diffraction Peer-reviewed

    Takayuki Akaogi, Kenji Tsuda, Masami Terauchi, Michiyoshi Tanaka

    JOURNAL OF ELECTRON MICROSCOPY　55　(3)　129-135　2006/06

    DOI： 10.1093/jmicro/dfl020 　

    ISSN： 0022-0744

  74. Local lattice parameter determination of a silicon (001) layer grown on a sapphire (1(1)over-bar-02) substrate using convergent-beam electron diffraction Peer-reviewed

    Takayuki Akaogi, Kenji Tsuda, Masami Terauchi, Michiyoshi Tanaka

    JOURNAL OF ELECTRON MICROSCOPY　55　(3)　129-135　2006/06

    DOI： 10.1093/jmicro/dfl020 　

    ISSN： 0022-0744

  75. X-ray and electron diffraction study of a precipitation phase in Nd 1.85Ce0.15CuO4+y single crystal Peer-reviewed

    Hiroyuki Kimura, Yukio Noda, Futami Sato, Kenji Tsuda, Kenji Kurahashi, Tetsushi Uefuji, Masaki Fujita, Kazuyoshi Yamada

    Journal of the Physical Society of Japan　74　(8)　2282-2286　2005/08

    DOI： 10.1143/JPSJ.74.2282 　

    ISSN： 0031-9015

  76. Performance of a new Monochromator for a 200 kV Analytical Electron Microscope Peer-reviewed

    M. Mukai, T. Kanayama, T. Tomota, K. Tsuno, M. Terauchi, K. Tsuda, M. Naruse, T. Honda, M. Tanaka

    Microscopy & Microanalysis　11　(2)　2134-2135　2005/08/01

    DOI： 10.1017/S1431927606064816 　

  77. Performance of a new Monochromator for a 200 kV Analytical Electron Microscope Invited Peer-reviewed

    M. Mukai, T. Kanayama, T. Tomota, K. Tsuno, M. Terauchi, K. Tsuda, M. Naruse, T. Honda, M. Tanaka

    Abstract of EDGE2005 International EELS workshop　25　2005/05/01

  78. Refinement of the crystal structural parameters of the intermediate phase of h-BaTiO3 using convergent-beam electron diffraction Peer-reviewed

    Y Ogata, K Tsuda, Y Akishige, M Tanaka

    ACTA CRYSTALLOGRAPHICA SECTION A　60　525-531　2004/11

    DOI： 10.1107/S0108767304016307 　

    ISSN： 0108-7673

  79. Refinement of crystal structural parameters and charge density using convergent-beam electron diffraction Invited Peer-reviewed

    K. Tsuda, Y. Ogata, M. Tanaka

    Proceedings of 8th Asia-Pacific conference on electron microscopy　30-31　2004/06/09

  80. Refinement of crystal structural parameters and charge density of La1-xSrxCrO3 (x=0.3) using CBED

    Yoichiro Ogata, Kenji Tsuda, Takuya Hashimoto, Michiyoshi Tanaka

    Proceedings of 8th Asia-Pacific Conference on Electron Microscopy　531-532　2004/06/07

  81. Lattice parameter determination of a composition controlled Si1-xGex layer on a Si (001) substrate using a CBED Invited Peer-reviewed

    T. Akaogi, K. Tsuda, M. Terauchi, M. Tanaka

    Proceedings of 8th Asia-Pacific conference on electron microscopy　499-500　2004/06

  82. Detection of the As-doped region in silicon by convergent-beam electron diffraction Invited

    M. Terauchi, H. Mitsuishi, K. Tsuda, K. Kawamura

    2nd German-Japanese school on CBED　2004/06

  83. Investigation of the structure of single crystal Sr3Ru2O7 by neutron and convergent beam electron diffractions Peer-reviewed

    R Kiyanagi, K Tsuda, N Aso, H Kimura, Y Noda, Y Yoshida, SI Ikeda, Y Uwatoko

    JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN　73　(3)　639-642　2004/03

    DOI： 10.1143/JPSJ.73.639 　

    ISSN： 0031-9015

  84. Refinement of crystal structural parameters and charge density using convergent-beam electron diffraction Invited Peer-reviewed

    K. Tsuda, Y. Ogata, M. Tanaka

    Abstract of the 18th Australian conference on microscopy and microanalysis　85　2004/02/02

  85. Nanoscale crystal structure analysis using CBED

    Yoichiro Ogata, Kenji Tsuda, Michiyoshi Tanaka

    Abstracts of International Symposium on the Creation of Novel Nanomaterials　107　2004/01/20

  86. Lattice parameter determination of a strained area of an InAs layer on a GaAs substrate using CBED Peer-reviewed

    T Akaogi, K Tsuda, M Terauchi, W Tanaka

    JOURNAL OF ELECTRON MICROSCOPY　53　(1)　11-19　2004

    DOI： 10.1093/jmicro/53.1.11 　

    ISSN： 0022-0744

  87. Lattice parameter determination of a composition controlled Si1-xGex layer on a Si(001) substrate using convergent-beam electron diffraction Peer-reviewed

    T Akaogi, K Tsuda, M Terauchi, M Tanaka

    JOURNAL OF ELECTRON MICROSCOPY　53　(6)　593-600　2004

    DOI： 10.1093/jmicro/dfh091 　

    ISSN： 0022-0744

  88. Detection of characteristic signals from As-doped (less than 1 at.%) regions of silicon by transmission electron microscopy and convergent-beam electron diffraction

    M. Terauchi, K. Tsuda, H. Mitsuishi, K. Kawamura

    Microscopy and Microanalysis　10　(2)　338-339　2004

    DOI： 10.1017/S1431927604883958 　

    ISSN： 1431-9276

  89. Performance of mirai-21 analytical electron microscope Peer-reviewed

    M. Mukai, T. Kaneyama, T. Tomita, K. Tsuno, M. Terauchi, K. Tsuda, D. Ioanoviciu, G. Martinez, M. Naruse, T. Honda, M. Tanaka

    Microscopy and Microanalysis　10　(2)　858-859　2004

    DOI： 10.1017/S1431927604883648 　

    ISSN： 1431-9276

  90. Local lattice parameter determination of strained areas of semiconductors using CBED Invited Peer-reviewed

    Takayuki Akaogi, Kenji Tsuda, Masami Terauchi, Michiyoshi Tanaka

    Microscopy and Microanalysis　10　(2)　310-311　2004

    DOI： 10.1017/S1431927604883727 　

    ISSN： 1431-9276

  91. "MIRAI-21" analytical electron microscope• - Performance of the monochromator - Invited Peer-reviewed

    Mukai, M., Kaneyama, T., Tomita, T., Tsuno, K., Terauchi, M., Tsuda, K., Saitoh, K., Naruse, M., Honda, T., Tanaka, M.

    Microscopy and Microanalysis　9　(SUPPL. 2)　954-956　2003/08

  92. High-temperature phase transition in lanthanum titanate perovskite La-0.64(Ti-0.92,Nb-0.08)O-3 Peer-reviewed

    M Yashima, M Mori, T Kamiyama, K Oikawa, A Hoshikawa, S Torii, K Saitoh, K Tsuda

    CHEMICAL PHYSICS LETTERS　375　(1-2)　240-246　2003/06

    DOI： 10.1016/S0009-2614(03)00835-2 　

    ISSN： 0009-2614

  93. Deconvolution of electron diffraction patterns of amorphous materials formed with convergent beam Peer-reviewed

    W McBride, DJH Cockayne, K Tsuda

    ULTRAMICROSCOPY　94　(3-4)　305-308　2003/04

    DOI： 10.1016/S0304-3991(02)00340-6 　

    ISSN： 0304-3991

  94. TEM image contrast of 180° domains of BaTiO<inf>3</inf>

    Omoto, K., Tsuda, K., Tanaka, M.

    Microscopy and Microanalysis　9　(SUPPL. 2)　378-379　2003

  95. Detection of characteristic signals from As-doped (&lt; 1 at.%) regions of silicon by transmission electron microscopy and convergent-beam electron diffraction Peer-reviewed

    M Terauchi, K Tsuda, K Kawamura

    JOURNAL OF ELECTRON MICROSCOPY　52　(5)　441-448　2003

    DOI： 10.1093/jmicro/52.5.441 　

    ISSN： 0022-0744

  96. Determination of space group of BaPb0.75Bi0.25O3 by convergent-beam electron diffraction Peer-reviewed

    Takuya Hashimoto, Kenji Tsuda, Junichiro Shiono, Junichiro Mizusaki, Michiyoshi Tanaka

    Physica C: Superconductivity and its Applications　382　(4)　422-430　2002/11/15

    DOI： 10.1016/S0921-4534(02)01259-5 　

    ISSN： 0921-4534

  97. Refinement of crystal structural parameters and charge density using convergent-beam electron diffraction - the rhombohedral phase of LaCrO3 Peer-reviewed

    K Tsuda, Y Ogata, K Takagi, T Hashimoto, M Tanaka

    ACTA CRYSTALLOGRAPHICA SECTION A　58　(5)　514-525　2002/11

    DOI： 10.1107/S0108767302011686 　

    ISSN： 0108-7673

  98. Refinement of crystal structural parameters and charge density using convergent-beam electron diffraction

    Kenji Tsuda, Yoichiro Ogata, Michiyoshi Tanaka

    Proceedings of the 15th International Congress for Electron Microscopy　631-632　2002/09

  99. Refinement of crystal structural parameters and charge density using convergent-beam electron diffraction

    Tsuda, K., Ogata, Y., Tanaka, M.

    Microscopy and Microanalysis　8　(SUPPL. 2)　88-89　2002/08

  100. Development of An 0.2eV Energy Resolution Analytical Electron Microscope Peer-reviewed

    M. Tanaka, M. Terauchi, K. Tsuda, K. Saitoh, M. Mukai, T, Kaneyama, T. Tomita, K. Tsuno, M. Kersker, M. Naruse, T. Honda

    Microscopy and Microanalysis 2002　68-69　2002/08

  101. Development of an 0.2eV energy resolution analytical electron microscope Peer-reviewed

    Tanaka, M., Terauchi, M., Tsuda, K., Saitoh, K., Mukai, M., Kaneyama, T., Tomita, T., Tsuno, K., Kersker, M., Naruse, M., Honda, T.

    Microscopy and Microanalysis　8　(SUPPL. 2)　68-69　2002/04

  102. Determination of Point- and SpaceGroups using Convergent-Beam Electron Diffraction Peer-reviewed

    Kenji Tsuda

    Journal of the Crystallographic Society of Japan　44　(4)　201-212　2002/04

    Publisher: The Crystallographic Society of Japan

    DOI： 10.5940/jcrsj.44.201 　

    ISSN： 0369-4585

    More details Close

    The standard procedure to determine point- and space-groups using convergent-beam electron diffraction (CBED) is described. A practical example in TiO2 is demonstrated.

  103. Refinement of Crystal Structural Parameters using Convergent-Beam Electron Diffraction Peer-reviewed

    Kenji Tsuda

    Journal of the Crystallographic Society of Japan　44　269-276　2002/04

  104. Elemental process of amorphization induced by electron irradiation in Si Peer-reviewed

    Jun Yamasaki, Seiji Takeda, Kenji Tsuda

    Physical Review B - Condensed Matter and Materials Physics　65　(11)　1152131-11521310　2002/03/15

    DOI： 10.1103/PhysRevB.65.115213 　

    ISSN： 0163-1829

  105. Erratum: Simulations of Kikuchi patterns due to thermal diffuse scattering on MgO crystals (Journal of Electron Microscopy 51:1 (67-78)) Peer-reviewed

    K. Omoto, K. Tsuda, M. Tanaka

    Journal of Electron Microscopy　51　(3)　205　2002

    DOI： 10.1093/jmicro/51.3.205 　

    ISSN： 0022-0744

  106. Simulations of Kikuchi patterns due to thermal diffuse scattering on MgO crystals Peer-reviewed

    K Omoto, K Tsuda, M Tanaka

    JOURNAL OF ELECTRON MICROSCOPY　51　(1)　67-78　2002

    DOI： 10.1093/jmicro/51.1.67 　

    ISSN： 0022-0744

  107. Distinction between space groups having principal rotation and screw axes, which are combined with twofold rotation axes, using the coherent convergent-beam electron diffraction method Peer-reviewed

    Koh Saitoh, Kenji Tsuda, Masami Terauchi, Michiyoshi Tanaka

    Acta Crystallographica Section A: Foundations of Crystallography　57　(3)　219-230　2001/05

    DOI： 10.1107/S0108767300014896 　

    ISSN： 0108-7673

  108. Convergent-beam electron diffraction study of the low-temperature ferromagnetic insulator phase of La1-xSrxMnO3 (x=0.11, 0.12) Peer-reviewed

    K Tsuda, M Tanaka, K Hirota, Y Endoh

    JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN　70　(4)　1010-1014　2001/04

    DOI： 10.1143/JPSJ.70.1010 　

    ISSN： 0031-9015

  109. Determination of the Crystal System and Space Group of BaBiO3 by Convergent-beam Electron Diffraction and X-ray Diffraction using Synchrotron Radiation Peer-reviewed

    T. Hashimoto, K. Tsuda, J. Shiono, J. Mizusaki, M. Tanaka

    Physical Review: Third series B, Condensed Matter and Materials Phyics　64　(224114)　1-6　2001/04

  110. Convergent-beam electron diffraction study of the low-temperature ferromagnetic insulator phase of La1-xSrxMnO3 (x = 0.11, 0.12) Peer-reviewed

    Kenji Tsuda, Michiyoshi Tanaka, Kazuma Hirota, Yasuo Endoh

    Journal of the Physical Society of Japan　70　(4)　1010-1014　2001/04

    DOI： 10.1143/JPSJ.70.1010 　

    ISSN： 0031-9015

  111. Crystal Structure Analysis using Electron Diffraction -Toward Determination of Charge Density Distribution- Peer-reviewed

    K. Tsuda, M. Tanaka

    Solid State Physics　36　320-329　2001/04

  112. Crystal Structure Analysis Using Electron Diffraction Peer-reviewed

    津田 健治

    Solid State Physics　10　(6)　320-329　2001/04

  113. Determination of the crystal system and space group of (formula presented) by convergent-beam electron diffraction and x-ray diffraction using synchrotron radiation

    Hashimoto, T., Tsuda, K., Shiono, J., Mizusaki, J., Tanaka, M.

    Physical Review B - Condensed Matter and Materials Physics　64　(22)　2001

    DOI： 10.1103/PhysRevB.64.224114 　

  114. 高機能電子顕微鏡をもらいた準結晶構造と準単位胞モデル Peer-reviewed

    津田 健治

    まてりあ　39　(8)　645-653　2000/04

    Publisher: The Japan Institute of Metals and Materials

    DOI： 10.2320/materia.39.645 　

    ISSN： 1340-2625

  115. Strain-induced symmetry breakdown in HOLZ lines from L1<inf>2</inf> titanium tri-aluminides

    Rossouw, C.J., Tsuda, K., Forwood, C.T., Gibson, M.A., Tanaka, M.

    Journal of Electron Microscopy　49　(5)　2000

    DOI： 10.1093/oxfordjournals.jmicro.a023848 　

  116. Structural studies on decagonal quasicrystals using the HAADF-STEM and CBED methods

    Saitoh, K., Tsuda, K., Tanaka, M., Tsai, A.P.

    Zeitschrift fur Kristallographie　215　(10)　2000

  117. Determination of the space group of LaCrO<inf>3</inf> by convergent-beam electron diffraction

    Hashimoto, T., Takagi, K., Tsuda, K., Tanaka, M., Yoshida, K., Tagawa, H., Dokiya, M.

    Journal of the Electrochemical Society　147　(12)　2000

    DOI： 10.1149/1.1394078 　

  118. Analysis of crystal structure and phase transition of LaCrO<inf>3</inf> by various diffraction measurements

    Hashimoto, T., Tsuzuki, N., Kishi, A., Takagi, K., Tsuda, K., Tanaka, M., Oikawa, K., Kamiyama, T., Yoshida, K., Tagawa, H., Dokiya, M.

    Solid State Ionics　132　(3)　2000

  119. 電子回折法による結晶構造解析

    津田 健治, 田中 通義

    日本結晶学会誌　42　43-43　2000

    Publisher: The Crystallographic Society of Japan

    DOI： 10.5940/jcrsj.42.Supplement_43 　

    ISSN： 0369-4585

  120. An 0.2eV energy resolution analytical electron microscope Peer-reviewed

    M Tanaka, M Terauchi, K Tsuda, K Saitoh, T Honda, K Tsuno, M Naruse, T Tomita, T Kaneyama

    MICROBEAM ANALYSIS 2000, PROCEEDINGS　(165)　217-218　2000

    ISSN： 0951-3248

  121. Distinction of space groups (I23 and I213) and (I222 and I212121) using coherent convergent-beam electron diffraction Peer-reviewed

    Kenji Tsuda, Koh Saitoh, Masami Terauchi, Michiyoshi Tanaka, Peter Goodman

    Acta Crystallographica Section A: Foundations of Crystallography　56　(4)　359-369　2000

    DOI： 10.1107/S0108767300004001 　

    ISSN： 0108-7673

  122. Electron Diffraction Study of the Phase Transformation of α′-NaV2O5 Peer-reviewed

    Kenji Tsuda, Shuichi Amamiya, Michiyoshi Tanaka, Yukio Noda, Masahiko Isobe, Yutaka Ueda

    Journal of the Physical Society of Japan　69　(7)　1935-1938　2000

    Publisher: Physical Society of Japan

    DOI： 10.1143/JPSJ.69.1935 　

    ISSN： 0031-9015

  123. Space Group Determination of the Room-Temperature Phase of ά-NaV2O5 Using Convergent-Beam Electron Diffraction Peer-reviewed

    Kenji Tsuda, Shuichi Amamiya, Michiyoshi Tanaka, Yukio Noda, Masahiko Isobe, Yutaka Ueda

    Journal of the Physical Society of Japan　69　(7)　1939-1941　2000

    Publisher: Physical Society of Japan

    DOI： 10.1143/JPSJ.69.1939 　

    ISSN： 0031-9015

  124. A new 200 kV Omega-filter electron microscope Peer-reviewed

    M Tanada, K Tsuda, M Terauchi, K Tsuno, T Kaneyama, T Honda, M Ishida

    JOURNAL OF MICROSCOPY-OXFORD　194　219-227　1999/04

    DOI： 10.1046/j.1365-2818.1999.00446.x 　

    ISSN： 0022-2720

  125. Structural Study of an Al70Ni15Fe15 Decagonal Quanicrstal Using High-Angle Annular Dark-Field Scanning Transmission Peer-reviewed

    津田 健治

    Japanese Journal of Applied Physics　38/6A/B,L671-674　(6)　L671-L674　1999/04

    Publisher: The Japan Society of Applied Physics

    DOI： 10.1143/jjap.38.L671 　

    ISSN： 0021-4922

    More details Close

    High-angle annular dark-field (HAADF) images of a melt-quenched Al70Ni15Fe15 decagonal quasicrystal have been taken using a scanning transmission electron microscope for the first time.We have found that the alloy is composed of 2-nm-diameter atom clusters with fivefold symmetry.We have also observed an inversion domain structure. A structural model has been constructed on the basis of the HAADF images and the fivefold cluster of the monoclinic τ2-Al13Co4 approximant model [Saitoh et al. : J. Electron Microsc. 48 (1999) 105]. Antiphase shifts at domain boundaries have been observed directly for the first time.The present observation has verified the results of high-resolution electron microscopy (HREM) and the dark-field imaging technique obtained by Tsuda et al. [Jpn. J. Appl. Phys. 32 (1993) 129].

  126. Structural Study of an Al70Ni15Fe15 decagonal quasicrystal using high-angle annular dark-field scanning transmission electron microscopy Peer-reviewed

    津田 健治

    Japanese Journal of Applied Physics　38　(6A-B)　L671-L674　1999/04

    Publisher: The Japan Society of Applied Physics

    DOI： 10.1143/jjap.38.L671 　

    ISSN： 0021-4922

    More details Close

    High-angle annular dark-field (HAADF) images of a melt-quenched Al70Ni15Fe15 decagonal quasicrystal have been taken using a scanning transmission electron microscope for the first time.We have found that the alloy is composed of 2-nm-diameter atom clusters with fivefold symmetry.We have also observed an inversion domain structure. A structural model has been constructed on the basis of the HAADF images and the fivefold cluster of the monoclinic τ2-Al13Co4 approximant model [Saitoh et al. : J. Electron Microsc. 48 (1999) 105]. Antiphase shifts at domain boundaries have been observed directly for the first time.The present observation has verified the results of high-resolution electron microscopy (HREM) and the dark-field imaging technique obtained by Tsuda et al. [Jpn. J. Appl. Phys. 32 (1993) 129].

  127. Structural studies of decagonal quasicrystals and approximants using the high-angle annular dark-field method Peer-reviewed

    K Saitoh, K Tsuda, M Tanaka, AP Tsai

    QUASICRYSTALS　553　177-182　1999

    ISSN： 0272-9172

  128. 収束電子回析法の発展 -精密構造解析- Peer-reviewed

    津田 健治

    電子顕微鏡　33　(3)　142-150　1998/04

    Publisher: The Japanese Society of Microscopy

    DOI： 10.11410/kenbikyo1950.33.142 　

    ISSN： 0417-0326

  129. 電子回折における非弾性散乱強度のシミュレーション

    応本 和也, 津田 健治, 田中 通義

    日本結晶学会誌　40　139-139　1998

    Publisher: The Crystallographic Society of Japan

    DOI： 10.5940/jcrsj.40.Supplement_139 　

    ISSN： 0369-4585

  130. 収束電子回折法によるLa1-xSrxMnO3 (x=0.12) の構造の研究

    津田 健治, 田中 通義, 廣田 和馬, 遠藤 康夫

    日本結晶学会誌　40　143-143　1998

    Publisher: The Crystallographic Society of Japan

    DOI： 10.5940/jcrsj.40.Supplement_143 　

    ISSN： 0369-4585

  131. A new Omega-filter electron microscope and structure refinement by convergent-beam electron diffraction Peer-reviewed

    M Tanaka, K Tsuda

    ELECTRON MICROSCOPY 1998, VOL 3　741-742　1998

  132. Construction and preliminary test of a new energy filtering TEM "JEM-2010FEF" Peer-reviewed

    T Kaneyama, K Tsuno, T Honda, M Kersker, K Tsuda, M Terauchi, M Tanaka

    ELECTRON MICROSCOPY 1998, VOL 1　235-236　1998

  133. Design of an Omega filter for 200 kV TEM Peer-reviewed

    K Tsuno, T Kaneyama, T Honda, Y Ishida, K Tsuda, M Terauchi, M Tanaka

    ELECTRON MICROSCOPY 1998, VOL 1　253-254　1998

  134. Performance of a new Omega-filter electron microscope on convergent-beam electron diffraction Peer-reviewed

    K Tsuda, K Saitoh, M Terauchi, M Tanaka, T Kaneyama, K Tsuno, T Honda

    ELECTRON MICROSCOPY 1998, VOL 1　251-252　1998

  135. Refinement of crystal structural parameters using two-dimensional energy-filtered HOLZ CBED patterns Peer-reviewed

    K Tsuda, M Tanaka

    ELECTRON MICROSCOPY 1998, VOL 3　783-784　1998

  136. Structural studies of decagonal quasicrystals using the high-angle annular dark-field method Peer-reviewed

    K Saitoh, K Tsuda, M Tanaka, AP Tsai

    ELECTRON MICROSCOPY 1998, VOL 3　17-18　1998

  137. New Structural Model of an Al72Ni20Co8 Decagonal Quasicrystal Peer-reviewed

    Koh Saitoh, Kenji Tsuda, Michiyoshi Tanaka

    Journal of the Physical Society of Japan　67　(8)　2578-2581　1998

    Publisher: Physical Society of Japan

    DOI： 10.1143/JPSJ.67.2578 　

    ISSN： 0031-9015

  138. Structural Study of an Al72Ni20Co8 Decagonal Quasicrystal by the High-angle Annular Dark-field Method Peer-reviewed

    津田 健治

    Japanese Journal of Applied Physics　36　(10B)　L1400-L1402　1997/04

    DOI： 10.1143/JJAP.36.L1400 　

    ISSN： 0021-4922

  139. 収束電子回折法によるナノメーター領域の結晶構造解析

    津田 健治, 田中 通義

    日本結晶学会誌　39　7-8　1997

    Publisher: The Crystallographic Society of Japan

    DOI： 10.5940/jcrsj.39.Supplement_7 　

    ISSN： 0369-4585

  140. 収束電子回折法による結晶構造解析用ソフトウェアの開発

    津田 健治, 斎藤 晃, 寺内 正己, 田中 通義

    日本結晶学会誌　39　180-180　1997

    Publisher: The Crystallographic Society of Japan

    DOI： 10.5940/jcrsj.39.Supplement_180 　

    ISSN： 0369-4585

  141. 構造解析用エネルギーフィルター電子顕微鏡

    寺内 正己, 津田 健治, 斎藤 晃, 田中 通義, 金山 俊克, 津野 勝重, 本田 敏和

    日本結晶学会誌　39　179-179　1997

    Publisher: The Crystallographic Society of Japan

    DOI： 10.5940/jcrsj.39.Supplement_179 　

    ISSN： 0369-4585

  142. 特別推進研究による構造解析用エネルギーフィルター電子顕微鏡の開発と結晶構造解析への応用

    田中 通義, 津田 健治, 斎藤 晃, 寺内 正己, 金山 俊克, 津野 勝重, 本田 敏和

    日本結晶学会誌　39　178-178　1997

    Publisher: The Crystallographic Society of Japan

    DOI： 10.5940/jcrsj.39.Supplement_178 　

    ISSN： 0369-4585

  143. 収束電子回折法によるデカゴナル準結晶の構造解析

    齋藤 晃, 津田 健治, 寺内 正己, 田中 通義, 蔡 安邦

    日本結晶学会誌　39　181-181　1997

    Publisher: The Crystallographic Society of Japan

    DOI： 10.5940/jcrsj.39.Supplement_181 　

    ISSN： 0369-4585

  144. Design and testing of Omega mode imaging energy filters at 200 kV Peer-reviewed

    K Tsuno, T Kaneyama, T Honda, K Tsuda, M Terauchi, M Tanaka

    JOURNAL OF ELECTRON MICROSCOPY　46　(5)　357-368　1997

    ISSN： 0022-0744

  145. Structural models for decagonal quasicrystals with pentagonal atom-cluster columns Peer-reviewed

    K. Saitoh, K. Tsuda, M. Tanaka

    Philosophical Magazine A: Physics of Condensed Matter, Structure, Defects and Mechanical Properties　76　(1)　135-150　1997

    DOI： 10.1080/01418619708209966 　

    ISSN： 0141-8610

  146. 収束電子回折法による結晶構造解析

    津田 健治, 田中 通義

    日本結晶学会誌　38　30-30　1996

    Publisher: The Crystallographic Society of Japan

    DOI： 10.5940/jcrsj.38.Supplement_30 　

    ISSN： 0369-4585

  147. Convergent-beam electron diffraction and electron microscopy study of decagonal quasicrystals of Al-Ni-Rh and Al-Ni-Ir Peer-reviewed

    K. Tsuda, Y. Nishida, M. Tanaka, A. P. Tsai, A. Inoue, T. Masumoto

    Philosophical Magazine Letters　73　(5)　271-278　1996

    DOI： 10.1080/095008396180759 　

    ISSN： 1362-3036 0950-0839

  148. Electron microscope study of the symmetry of the basic atom cluster and a structural change of decagonal quasicrystals of Al-Cu-Co alloys Peer-reviewed

    K. Saitoh, K. Tsuda, M. Tanaka, A. P. Tsai, A. Inoue, T. Masumoto

    Philosophical Magazine A: Physics of Condensed Matter, Structure, Defects and Mechanical Properties　73　(2)　387-398　1996

    DOI： 10.1080/01418619608244389 　

    ISSN： 0141-8610

  149. Interferometry by coherent convergent-beam electron diffraction Peer-reviewed

    Kenji Tsuda, Michiyoshi Tanaka

    Journal of Electron Microscopy　45　(1)　59-63　1996

    Publisher: Oxford University Press

    DOI： 10.1093/oxfordjournals.jmicro.a023413 　

    ISSN： 0022-0744

  150. Structure of Al-Ni-Co decagonal quasicrystals Peer-reviewed

    K. Tsuda, Y. Nishida, K. Saitoh, M. Tanaka, A. P. Tsai, A. Inoue, T. Masumoto

    Philosophical Magazine A: Physics of Condensed Matter, Structure, Defects and Mechanical Properties　74　(3)　697-708　1996

    DOI： 10.1080/01418619608243536 　

    ISSN： 0141-8610

  151. Structure Analysis by Convergent-Beam Electron Diffraction Peer-reviewed

    津田 健治

    Proceedings of the 2nd NIRIM International Symposium on Advomced Materials　97-104　1995/04

  152. Coherent Convergent-Beam Electron Diffraction Peer-reviewed

    津田 健治

    Electron-Microscopy　29　(3)　171-180　1995/04

    Publisher: The Japanese Society of Microscopy

    DOI： 10.11410/kenbikyo1950.29.171 　

    ISSN： 0417-0326

  153. Refinement of Crystal Structure Parameters using Convergent-Beam Electron Diffraction : the low-temperature phase of SrTiO3 Peer-reviewed

    K. Tsuda, M. Tanaka

    Acta Crystallographica　A51　7-19　1995/04

    DOI： 10.1107/S010876739400560X 　

  154. 収束電子回折法による結晶構造解析

    津田 健治, 田中 通義

    日本結晶学会誌　37　14-14　1995

    Publisher: The Crystallographic Society of Japan

    DOI： 10.5940/jcrsj.37.Supplement_14 　

    ISSN： 0369-4585

  155. Convergent-beam electron diffraction and electron microscope study on decagonal quasicrystals of AlCuCo and AlCo alloys Peer-reviewed

    K Saitoh, K Tsuda, M Tanaka, A.P Tsai, A Inoue, T Masumoto

    Materials Science and Engineering A　181-182　(C)　805-810　1994/05/15

    DOI： 10.1016/0921-5093(94)90744-7 　

    ISSN： 0921-5093

  156. Observation of Interference Fringes with a lattice Spacing of 1.92Å in Convergent-Beam Electron Diffraction Peer-reviewed

    津田 健治

    Journal of Electron Microscopy　43　(3)　173-175　1994/04

    Publisher:

    ISSN： 0022-0744

  157. Crystal Structure Analysis using Convergent-Beam Electron Diffraction Peer-reviewed

    津田 健治

    Journal of the Crystallographic Society of Japan　36　(4)　246-258　1994/04

    Publisher: The Crystallographic Society of Japan

    DOI： 10.5940/jcrsj.36.246 　

    ISSN： 0369-4585

    More details Close

    The method to refine crystal structure parameters (atom positions and Debye-Waller factors) using convergent-beam electron diffraction (CBED) is described. The method is powerful for crystal structure analysis of a nm-scale specimen area.

  158. コヒーレント収束電子回折法による結晶構造因子の位相検出

    津田 健治, 寺内 正己, 田中 通義, 金山 俊克, 本田 敏和

    日本結晶学会誌　36　46-46　1994

    Publisher: The Crystallographic Society of Japan

    DOI： 10.5940/jcrsj.36.Supplement_46 　

    ISSN： 0369-4585

  159. Highly ordered structure of icosahedral quasicrystals in Zn-Mg-Re (Re = rare earth metals) systems Peer-reviewed

    A. P. Tsai, A. Niikura, A. Inoue, T. Masumoto, Y. Nishida, K. Tsuda, M. Tanaka

    Philosophical Magazine Letters　70　(3)　169-175　1994

    DOI： 10.1080/09500839408240971 　

    ISSN： 1362-3036 0950-0839

  160. Observation of coherent CBED patterns from small lattice spacings and stacking faults Peer-reviewed

    K TSUDA, M TERAUCHI, M TANAKA, T KANEYAMA, T HONDA

    ELECTRON MICROSCOPY 1994, VOL 1　1　865-866　1994

  161. Observation of lattice fringes in convergent-beam electron diffraction patterns Peer-reviewed

    Masami Terauchi, Kenji Tsuda, Osamu Kamimura, Michiyoshi Tanaka, Toshikatsu Kaneyama, Toshikazu Honda

    Ultramicroscopy　54　(2-4)　268-275　1994

    DOI： 10.1016/0304-3991(94)90126-0 　

    ISSN： 0304-3991

  162. Crystal Structure Analysis by Convergent-Beam Electron Diffraction Peer-reviewed

    津田 健治

    Solid State Physics　28　(12)　887-899　1993/04

  163. Electron diffraction and electron microscope study on decagonal quasicrystals on AlNiFe alloys Peer-reviewed

    M Tanaka, K Tsuda, M Terauchi, A Fujiwara, A.P Tsai, A Inoue, T Masumoto

    Journal of Non-Crystalline Solids　153-154　(C)　98-102　1993/02/02

    DOI： 10.1016/0022-3093(93)90322-O 　

    ISSN： 0022-3093

  164. Electron microscope study of decagonal quasicrystals of Al70Ni15Fe15 Peer-reviewed

    Kenji Tsuda, Masakazu Saito, Masami Terauchi, Michiyoshi Tanaka, An Pang Tsai, Akihisa Inoue, Tsuyoshi Masumoto

    Japanese Journal of Applied Physics　32　(1 R)　129-134　1993

    DOI： 10.1143/JJAP.32.129 　

    ISSN： 1347-4065 0021-4922

  165. SPACE-GROUPS OF METASTABLE CRYSTALLINE PHASES FORMED IN AMORPHOUS FE74R6B20 ALLOYS (R=CE, ND OR TB) DETERMINED BY CONVERGENT-BEAM ELECTRON-DIFFRACTION Peer-reviewed

    JK KIM, H SAITOH, K TSUDA, F SATOU, K HIRANO

    MATERIALS TRANSACTIONS JIM　32　(6)　526-530　1991/06

    DOI： 10.2320/matertrans1989.32.526 　

    ISSN： 0916-1821

  166. Toward Structure Determination Using Convergent-Beam Electron Diffraction Peer-reviewed

    津田 健治

    Proc. 26th Meeting of Microbeam Analysis Society　145-146　1991/04

  167. Determination of Positional Parameters by Convergent-Beam Electron Diffraction Peer-reviewed

    M. Tanaka, K. Tsuda

    Proc. XII Int. Congr. on Electron Microscopy　1990/04

  168. Space-Group Determination of a New Superconductor (Nd1-x Cex)2 (Ba1-y Ndy)2 Cu3O10-#Gepsilon#GR Using Convergent-Beam Electron Diffraction Peer-reviewed

    津田 健治

    Jpn. J. Appl. Phys.　28　(9)　L1552-L1554　1989/04

    Publisher: The Japan Society of Applied Physics

    ISSN： 0021-4922

    More details Close

    The space group of a superconductor (Nd1−xCex)2(Ba1−yNdy)2Cu3O10−ε was determined to be I4⁄mmm by convergent-beam electron diffraction.

  169. 収束電子回折による結晶構造解析

    田中 通義, 津田 健治

    日本結晶学会誌　31　PB-32-PB-32　1989

    Publisher: The Crystallographic Society of Japan

    DOI： 10.5940/jcrsj.31.Supplement_PB-32 　

    ISSN： 0369-4585

  170. Space-group determination of a new superconductor (Nd0.66Sr0.205Ce0.135)2CuO4-γ using convergent-beam electron diffraction Peer-reviewed

    Kenji Tsuda, Michiyoshi Tanaka, Jun Sakanoue, Hiroshi Sawa, Seiichiro Suzuki, Jun Akimitsu

    Japanese Journal of Applied Physics　28　(3 A)　L389-L391　1989

    DOI： 10.1143/JJAP.28.L389 　

    ISSN： 1347-4065 0021-4922

  171. Determination of space group and refinement of structure parameters for la2cuo4-δcrystals Peer-reviewed

    Kazuyoshi Yamada, Eisuke Kudo, Yasuo Endoh, Kenji Tsuda, Michiyoshi Tanaka, Koichi Kokusho, Hajime Asano, Fujio Izumi, Migaku Oda, Yoshikazu Hidaka, Minoru Suzuki, Toshiaki Murakami

    Japanese Journal of Applied Physics　27　(7R)　1132-1137　1988

    DOI： 10.1143/JJAP.27.1132 　

    ISSN： 1347-4065 0021-4922

  172. Electron diffraction study of ba2ycu3o7-y(y=0.1-0.2) Peer-reviewed

    Michiyoshi Tanaka, Masami Terauchi, Kenji Tsuda, Akira Ono

    Japanese Journal of Applied Physics　26　(7A)　1237-1239　1987

    DOI： 10.1143/JJAP.26.L1237 　

    ISSN： 1347-4065 0021-4922

  173. Space-group determination of la2cuo4-ै by conventional and convergent-beam electron diffraction Peer-reviewed

    Michiyoshi Tanaka, Kenji Tsuda, Kazuyoshi Yamada, Yasuo Endoh, Yoshikazu Hidaka, Migaku Oda, Minoru Suzuki, Toshiaki Murakami

    Japanese Journal of Applied Physics　26　(9A)　1502-1504　1987

    DOI： 10.1143/JJAP.26.L1502 　

    ISSN： 1347-4065 0021-4922

Show all ︎Show first 5

Misc. 215

  1. Charge density analysis of strontium titanate using quantitative convergent-beam electron diffraction

    Bikas Aryal, Mostafa Eid, Andrew E. Smith, Daisuke Morikawa, Tianyu Liu, Kenji Tsuda, Naruki Tsuji, Yoshiharu Sakurai, Sizhuo Yu, Jean-Michel Gillet, Laure Bourgeois, Philip N. H. Nakashima

    Charge density analysis of strontium titanate using quantitative convergent-beam electron diffraction　2025/02

    Publisher: ScienceOpen

    DOI： 10.14293/apmc13-2025-0377 　

  2. Crystal Structure and Charge Density Analysis at Twin Boundary using Multiple Convergent-beam Electron Diffraction Patterns

    Daisuke Morikawa, Tianyu Liu, Kenji Tsuda

    Crystal Structure and Charge Density Analysis at Twin Boundary using Multiple Convergent-beam Electron Diffraction Patterns　2025/02

    Publisher: ScienceOpen

    DOI： 10.14293/apmc13-2025-0383 　

  3. Chirality Determination Using Qualitative Bijvoet Difference by 3D ED Analysis

    Tianyu Liu, Daisuke Morikawa, Hirofumi Kurokawa, Shun Narai, Yusuke Seto, Koji Yonekura, Kenji Tsuda

    Chirality Determination Using Qualitative Bijvoet Difference by 3D ED Analysis　2025/02

    Publisher: ScienceOpen

    DOI： 10.14293/apmc13-2025-0186 　

  4. Acoustic Oscillations on Piezoelectric Materials Excited by a GHz Pulsed Electron Beam

    Yohei K Sato, Kenji Tsuda, Spencer A Reisbick, Daisuke Morikawa, Masami Terauchi, Yimei Zhu

    Microscopy and Microanalysis　30　(Supplement_1)　2024/07/24

    Publisher: Oxford University Press (OUP)

    DOI： 10.1093/mam/ozae044.713 　

    ISSN： 1431-9276

    eISSN： 1435-8115

  5. Convergent-beam electron diffraction (CBED) method Invited

    TSUDA Kenji

    Bulletin of The Iron and Steel Institute of Japan　23　(4)　158-163　2018/04

  6. 21pAF-8 Study on local structures of the cubic phase of BaTiO_3 using STEM-CBED II

    Tsuda K., Tanaka M.

    Meeting Abstracts of the Physical Society of Japan　71　2725-2725　2016

    Publisher: The Physical Society of Japan (JPS)

    DOI： 10.11316/jpsgaiyo.71.1.0_2725 　

    ISSN： 2189-079X

  7. Local structure analysis of ferroelectric GeTe using STEM-CBED

    Tsuda Kenji, Tanaka Michiyoshi

    Meeting Abstracts of the Physical Society of Japan　71　2579-2579　2016

    Publisher: The Physical Society of Japan

    DOI： 10.11316/jpsgaiyo.71.2.0_2579 　

  8. Verification of polarized cluster within a domain of BaTiO3 with direct observation of HAADF-STEM

    Takanashi Naoto, Tsuda Kenji, Abe Eiji

    Meeting Abstracts of the Physical Society of Japan　71　2575-2575　2016

    Publisher: The Physical Society of Japan

    DOI： 10.11316/jpsgaiyo.71.2.0_2575 　

  9. 17pAD-9 Study on local structures of the cubic phase of BaTiO_3 using STEM-CBED

    Tsuda K., Tanaka M.

    Meeting Abstracts of the Physical Society of Japan　70　2475-2475　2015

    Publisher: The Physical Society of Japan (JPS)

    DOI： 10.11316/jpsgaiyo.70.2.0_2475 　

    ISSN： 2189-079X

  10. 22aBD-3 Space group determination of NdBaMn_2O_6 using convergent-beam electron diffraction II

    jingu S., Tsuda K., Sagayama H., Higuchi K., Yamada S., Arima T.

    Meeting Abstracts of the Physical Society of Japan　70　2081-2081　2015

    Publisher: The Physical Society of Japan (JPS)

    DOI： 10.11316/jpsgaiyo.70.1.0_2081 　

    ISSN： 2189-079X

  11. 7pBG-9 Space group determination of NdBaMn_2O_6 using convergent-beam electron diffraction

    Jingu S., Tsuda K., Sagayama H., Higuchi K., Yamada S., Arima T.

    Meeting abstracts of the Physical Society of Japan　69　(2)　339-339　2014/08/22

    Publisher: The Physical Society of Japan (JPS)

    ISSN： 1342-8349

  12. 収束電子回折法によるBaTiO3強誘電相の局所構造揺らぎの研究

    津田健治

    日本結晶学会誌　56　(2)　98-103　2014/05

    DOI： 10.5940/jcrsj.56.98 　

  13. 29pAB-4 Analysis of nanostructures and mapping of polarizations in ferroelectric phases of BaTiO_3 using convergent-beam electron diffraction

    Tsuda K.

    Meeting abstracts of the Physical Society of Japan　69　(1)　934-934　2014/03/05

    Publisher: The Physical Society of Japan (JPS)

    ISSN： 1342-8349

  14. Possibility of direct observatlon of local structural fluctuations in BaTiO_3 using TEM/STEM

    Tsuda K., Tanaka M.

    Meeting abstracts of the Physical Society of Japan　68　(2)　862-862　2013/08/26

    Publisher: The Physical Society of Japan (JPS)

    ISSN： 1342-8349

  15. Study of local structural fluctuations of BaTiO_3 using electron energy-loss spectroscopy and X-ray emission spectroscopy

    Tsuda K., Sato Y., Terauchi M., Tanaka M.

    Meeting abstracts of the Physical Society of Japan　68　(2)　861-861　2013/08/26

    Publisher: The Physical Society of Japan (JPS)

    ISSN： 1342-8349

  16. Study site symmetries by X-ray incoherent channeling patterns

    Terauchi M., Tsuda K.

    Meeting abstracts of the Physical Society of Japan　68　(2)　857-857　2013/08/26

    Publisher: The Physical Society of Japan (JPS)

    ISSN： 1342-8349

  17. 27pXZB-2 Study of local structural fluctuations of the orthorhombic phase of KNb_3 using STEM-CBED technique

    Tsuda K., Tanaka M.

    Meeting abstracts of the Physical Society of Japan　68　(1)　1037-1037　2013/03/26

    Publisher: The Physical Society of Japan (JPS)

    ISSN： 1342-8349

  18. 27pXZB-3 Study of local structures of the tetragonal phase of PbTiO_3 using CBEO

    Tanaka M., Tsuda K.

    Meeting abstracts of the Physical Society of Japan　68　(1)　1037-1037　2013/03/26

    Publisher: The Physical Society of Japan (JPS)

    ISSN： 1342-8349

  19. 次世代紫外発光素子に向けた単結晶AlN膜の作製

    福山博之, 安達正芳, 津田健治

    文部科学省特別経費「大学の特性を生かした多様な学術研究機能の充実」附置研究所間アライアンスによるナノとマクロをつなぐ物質・デバイス・システム創製戦略プロジェクト（ナノマクロ物質・デバイス・システム創製アライアンス）平成24年度（2012年度）成果報告書　271-272　2013/03

  20. 収束電子回折法による構造相転移の研究

    津田健治

    熱測定　39　(4)　158-163　2012/10

    Publisher: 日本熱測定学会

    ISSN： 0386-2615

  21. 19pAG-9 Study of local structural fluctuations of the tetragonal and orthorhombic phases of BaTiO_3 using CBED

    Tsuda K., Sano R., Tanaka M.

    Meeting abstracts of the Physical Society of Japan　67　(2)　860-860　2012/08/24

    Publisher: The Physical Society of Japan (JPS)

    ISSN： 1342-8349

  22. 21aAG-8 Study on symmetries of X-ray incoherent channeling patterns III

    Terauchi M., Tsuda K.

    Meeting abstracts of the Physical Society of Japan　67　(2)　883-883　2012/08/24

    Publisher: The Physical Society of Japan (JPS)

    ISSN： 1342-8349

  23. 27aCL-8 Study on symmetries of X-ray incoherent channeling patterns II

    Terauchi M., Tsuda K.

    Meeting abstracts of the Physical Society of Japan　67　(1)　1013-1013　2012/03/05

    Publisher: The Physical Society of Japan (JPS)

    ISSN： 1342-8349

  24. 24aCL-6 Study of local structural fluctuations of the tetragonal phase of BaTiO_3 using CBED

    Sano R., Tsuda K., Tanaka M.

    Meeting abstracts of the Physical Society of Japan　67　(1)　984-984　2012/03/05

    Publisher: The Physical Society of Japan (JPS)

    ISSN： 1342-8349

  25. 20pFG-5 Synchrotron radiation X-ray diffraction study on the charge and orbital ordering in A-site-ordered-perovskite-type manganate SmBaMn_2O_6

    Sagayama H, Toyoda S, Arima T, Maeda Y, Yamada S, Morikawa D, Tsuda K, Sugimoto K

    Meeting Abstracts of the Physical Society of Japan　67　(0)　544-544　2012

    Publisher: The Physical Society of Japan (JPS)

    ISSN： 1342-8349

  26. Development of an accurate crystal structure analysis method using energy-filtering convergent-beam electron diffraction Invited Peer-reviewed

    津田健治

    Journal of the Crystallographic Society of Japan　53　(6)　380-386　2011/12

    Publisher: The Crystallographic Society of Japan

    DOI： 10.5940/jcrsj.53.380 　

    ISSN： 0369-4585

    More details Close

    7207

  27. 21aJA-2 Study on symmetries of rocking X-ray incoherent channeling patterns

    Terauchi M., Igusa R., Tsuda K.

    Meeting abstracts of the Physical Society of Japan　66　(2)　968-968　2011/08/24

    Publisher: The Physical Society of Japan (JPS)

    ISSN： 1342-8349

  28. 22aGN-7 Observation of ferroelectric domain walls of hexagonal YMnO_3 using CBED II

    Tsuda K., Morikawa D., Abe N., Arima T.

    Meeting abstracts of the Physical Society of Japan　66　(2)　978-978　2011/08/24

    Publisher: The Physical Society of Japan (JPS)

    ISSN： 1342-8349

  29. 22aGN-8 Electrostatic potential analysis of hexagonal YMnO_3 using convergent-beam electron diffraction

    Morikawa D., Tsuda K., Abe N., Arima T.

    Meeting abstracts of the Physical Society of Japan　66　(2)　978-978　2011/08/24

    Publisher: The Physical Society of Japan (JPS)

    ISSN： 1342-8349

  30. 22pGN-10 Crystal structure analyses of (Ag, Li)NbO_3 at room temperature by CBED method

    Sano R., Tsuda K., Fu D., Itoh M.

    Meeting abstracts of the Physical Society of Japan　66　(2)　991-991　2011/08/24

    Publisher: The Physical Society of Japan (JPS)

    ISSN： 1342-8349

  31. Ga‐Al液相成長AlNの転位解析および極性判定

    安達正芳, 田中明和, 森川大輔, 津田健治, 小畠秀和, 大塚誠, 福山博之

    応用物理学会学術講演会講演予稿集(CD-ROM)　72nd　ROMBUNNO.30P-ZF-9　2011/08/16

  32. Convergent-beam electron diffraction

    Michiyoshi Tanaka, Kenji Tsuda

    JOURNAL OF ELECTRON MICROSCOPY　60　S245-S267　2011/08

    DOI： 10.1093/jmicro/dfr038 　

    ISSN： 0022-0744

  33. Ga‐Alフラックスから成長したAlN膜の転位および極性解析

    安達正芳, 前田一夫, 田中明和, 森川大輔, 津田健治, 小畠秀和, 大塚誠, 福山博之

    応用物理学関係連合講演会講演予稿集(CD-ROM)　58th　ROMBUNNO.25P-BY-9　2011/03/09

  34. 25pTM-11 Space group determination of (Ag, Li)NbO_3 at room temperature by CBED method

    Sano R., Tsuda K., Fu D., Itoh M.

    Meeting abstracts of the Physical Society of Japan　66　(1)　962-962　2011/03/03

    Publisher: The Physical Society of Japan (JPS)

    ISSN： 1342-8349

  35. 27pTM-10 Observation of ferroelectric domain walls of hexagonal YMnO_3 using CBED

    Tsuda K., Morikawa D., Abe N., Arima T.

    Meeting abstracts of the Physical Society of Japan　66　(1)　984-984　2011/03/03

    Publisher: The Physical Society of Japan (JPS)

    ISSN： 1342-8349

  36. 27pED-3 Crystal structure analysis of charge and orbital ordered phase of SmBaMn_2O_6 using convergent-beam electron diffraction II

    Morikawa D., Tsuda K., Yamada S., Arima T.

    Meeting abstracts of the Physical Society of Japan　66　(1)　634-634　2011/03/03

    Publisher: The Physical Society of Japan (JPS)

    ISSN： 1342-8349

  37. 23aWJ-11 Crystal structure analysis of charge and orbital ordered phase of SmBaMn_2O_6 using convergent-beam electron diffraction

    Morikawa D., Tsuda K., Yamada S., Arima T.

    Meeting abstracts of the Physical Society of Japan　65　(2)　457-457　2010/08/18

    Publisher: The Physical Society of Japan (JPS)

    ISSN： 1342-8349

  38. 25aWY-7 Space group determination of AgNbO_3 at room temperature by CBED method

    Sano R., Morikawa D., Tsuda K., Fu D., Itoh M.

    Meeting abstracts of the Physical Society of Japan　65　(2)　916-916　2010/08/18

    Publisher: The Physical Society of Japan (JPS)

    ISSN： 1342-8349

  39. 収束電子回折法による静電ポテンシャル分布解析

    津田健治

    日本結晶学会誌　52　(3)　184-189　2010/06

    Publisher: The Crystallographic Society of Japan

    DOI： 10.5940/jcrsj.52.184 　

    ISSN： 0369-4585

    More details Close

    A nanoscale structure analysis method using convergent-beam electron diffraction (CBED) is described, which enables us to directly determine electrostatic potential. Applications of the method to crystalline silicon and spinel oxide FeCr2O4 are presented.

  40. 23aGA-9 Structural analysis of the room temperature and low temperature phase of NdBaMn_2O_6 using convergent-beam electron diffraction

    Morikawa D., Tsuda K., Yamada S., Arima T.

    Meeting abstracts of the Physical Society of Japan　65　(1)　664-664　2010/03/01

    Publisher: The Physical Society of Japan (JPS)

    ISSN： 1342-8349

  41. 22pHS-7 Strain analysis of BiFeO_3 ferroelectric thin films using convergent-beam electron diffraction

    Tsuda K., Nakajima S., Park J-M., Okuyama M.

    Meeting abstracts of the Physical Society of Japan　65　(1)　1000-1000　2010/03/01

    Publisher: The Physical Society of Japan (JPS)

    ISSN： 1342-8349

  42. Convergent-beam electron diffraction

    Kenji Tsuda

    Microscopy　44　(4)　280-285　2009/12

    Publisher: 日本顕微鏡学会

    ISSN： 1349-0958

  43. 25pYJ-8 Crystal structure analysis of ferroelectrics using convergent-beam electron diffraction

    Tsuda Kenji

    Meeting abstracts of the Physical Society of Japan　64　(2)　861-861　2009/08/18

    Publisher: The Physical Society of Japan (JPS)

    ISSN： 1342-8349

  44. 26aYK-7 Structural study of the charge and orbital ordered phase of Pr_<0.6>Ca_<0.4>MnO_3 using convergent-beam electron diffraction

    Morikawa D., Tsuda K., Yamada S., Arima T.

    Meeting abstracts of the Physical Society of Japan　64　(2)　869-869　2009/08/18

    Publisher: The Physical Society of Japan (JPS)

    ISSN： 1342-8349

  45. 27aTA-9 Electrostatic potential analysis of the orbital ordered phase of TbMnO_3 using convergent-beam electron diffraction II

    Morikawa D., Tsuda K., Ishii F., Abe N., Arima T.

    Meeting abstracts of the Physical Society of Japan　64　(1)　520-520　2009/03/03

    Publisher: The Physical Society of Japan (JPS)

    ISSN： 1342-8349

  46. 22pVE-4 Electrostatic potential analysis using convergent-beam electron diffraction : comparisons between PbTiO_3 and PbTiO_3

    Tsuda K., Tanaka M.

    Meeting abstracts of the Physical Society of Japan　63　(2)　888-888　2008/08/25

    Publisher: The Physical Society of Japan (JPS)

    ISSN： 1342-8349

  47. 25pYE-10 Electrostatic potential analysis of the ferroelectric phase of PbTiO_3 using convergent-beam electron diffraction

    Tsuda K., Tanaka M.

    Meeting abstracts of the Physical Society of Japan　63　(1)　946-946　2008/02/29

    Publisher: The Physical Society of Japan (JPS)

    ISSN： 1342-8349

  48. 25pWP-5 Study of the orbital ordered phase of spinel oxide FeCr_2O_4 using convergent-beam electron diffraction II

    Morikawa D., Tsuda K., Watanabe Y., Arima T.

    Meeting abstracts of the Physical Society of Japan　63　(1)　618-618　2008/02/29

    Publisher: The Physical Society of Japan (JPS)

    ISSN： 1342-8349

  49. 21aQA-9 Electrostatic potential analysis of the orbital ordered phase of TbMnO_3 using convergent-beam electron diffraction

    Morikawa D., Tsuda K., Abe N., Arima T.

    Meeting Abstracts of the Physical Society of Japan　63　(0)　483-483　2008

    Publisher: The Physical Society of Japan

    DOI： 10.11316/jpsgaiyo.63.2.3.0_483_1 　

    ISSN： 1342-8349

  50. Electrostatic potential analysis of the orbital-ordered phase of spinel oxide FeCr2O4 using CBED

    Daisuke Morikawa, Kenji Tsuda, Shintaro Ohtani, Takahisa Arima

    ACTA CRYSTALLOGRAPHICA A-FOUNDATION AND ADVANCES　64　C605-C605　2008

    DOI： 10.1107/S0108767308080550 　

    ISSN： 2053-2733

  51. 23pTK-3 Electrostatic potential analysis of ferroelectrics using convergent-beam electron diffraction

    Tsuda Kenji

    Meeting abstracts of the Physical Society of Japan　62　(2)　1006-1006　2007/08/21

    Publisher: The Physical Society of Japan (JPS)

    ISSN： 1342-8349

  52. 23pTC-1 Space group determination of Al_2(WO_4)_3 using convergent-beam electron diffraction

    Ogata Yoichiro, Tsuda Kenji, Hashimoto Takuya

    Meeting abstracts of the Physical Society of Japan　62　(2)　1002-1002　2007/08/21

    Publisher: The Physical Society of Japan (JPS)

    ISSN： 1342-8349

  53. 24aWH-6 Study of the orbital ordered phase of spinel oxide FeCr_2O_4 using convergent-beam electron diffraction I

    Morikawa D., Tsuda K.

    Meeting abstracts of the Physical Society of Japan　62　(2)　651-651　2007/08/21

    Publisher: The Physical Society of Japan (JPS)

    ISSN： 1342-8349

  54. 18aPS-24 Anomalous magnetic phase diagram on La_<1-x>Sr_xMnO_3 nanocrystals in the SBA-15

    Tajiri T., Yugawa K., Harazono M., Kitamura T., Deguchi H., Kohiki S., Mito M., Takagi S., Tsuda K., Murakami Y., Kohno A.

    Meeting abstracts of the Physical Society of Japan　62　(1)　407-407　2007/02/28

    Publisher: The Physical Society of Japan (JPS)

    ISSN： 1342-8349

  55. 19aPS-55 Crystal structure and charge density analysis of the charge/orbital ordered phase of La_<2-2x>Sr_<1+2x>Mn_2O_7 (x=0.525) using convergent-beam electron diffraction II.

    Ogata Yoichiro, Tsuda Kenji, Hirota Kazuma, Murakami Youichi

    Meeting abstracts of the Physical Society of Japan　62　(1)　568-568　2007/02/28

    Publisher: The Physical Society of Japan (JPS)

    ISSN： 1342-8349

  56. 21pWG-2 Study of structure and rattling in the β-pyrochlore oxide superconductors from X-ray diffraction and convergent-beam electron diffraction

    Yamaura J., Ichihara M., Nagao Y., Hiroi Z., Tsuda K.

    Meeting abstracts of the Physical Society of Japan　62　(1)　650-650　2007/02/28

    Publisher: The Physical Society of Japan (JPS)

    ISSN： 1342-8349

  57. 19aXC-2 Charge Density Analysis of CuM_2O_4(M=Fe,Cr) using Convergent-Beam Electron Diffraction

    Kimura D., Ogata Y., Tsuda K., Kameoka S., Tsai A. P.

    Meeting abstracts of the Physical Society of Japan　62　(1)　951-951　2007/02/28

    Publisher: The Physical Society of Japan (JPS)

    ISSN： 1342-8349

  58. 20aXA-13 Electrostatic potential analysis of the ferroelectric phase of BaTiO_3 using convergent-beam electron diffraction II

    Tsuda K., Tanaka M.

    Meeting abstracts of the Physical Society of Japan　62　(1)　965-965　2007/02/28

    Publisher: The Physical Society of Japan (JPS)

    ISSN： 1342-8349

  59. 19pTB-11 Magnetic Properties and Structural Studies of LaMnO_<3+δ> Nanocrystals in MCM-41 Mesoporous Silica

    吉良 弘, 田村 秀和, 多々見 央, 安藤 悠也, 小野寺 貢, 中尾 裕則, 村上 洋一, 篠原 武尚, 鈴木 淳市, 津田 健治, 大山 研司, 野尻 浩之, 山崎 誠志, 出口 博之

    Meeting abstracts of the Physical Society of Japan　62　(1)　461-461　2007/02/28

    Publisher: The Physical Society of Japan (JPS)

    ISSN： 1342-8349

  60. New Scope in Research on Microstructures for Development of Materials through Electron Microscopy (6)

    IKUHARA Yuichi, ABE Eiji, JINNAI Hiroshi, KURATA Hiroki, YAMAMOTO Takahisa, TSUDA Kenji, HIRAYAMA Tsukasa, SEKIGUCHI Takashi, TANAKA Nobuo

    まてりあ : 日本金属学会会報　45　(12)　837-837　2006/12/20

    DOI： 10.2320/materia.45.842 　

    ISSN： 1340-2625

  61. 収束電子回折法によるSiの電子密度分布解析

    小形曜一郎, 津田健治, 田中通義

    まてりあ　45　(12)　885-885　2006/12

    Publisher: The Japan Institute of Metals and Materials

    DOI： 10.2320/materia.45.885 　

    ISSN： 1340-2625

  62. Charge Density Analysis of Silicon using Convergent-Beam Electron Diffraction Peer-reviewed

    Yoichiro Ogata, Kenji Tsuda, Michiyoshi Tanaka

    Proceedings of the 16th International Microscopy Congress (IMC16),　1016　2006/09

  63. Space Group Determinations of LaGa1-xMgxO3-x/2 using Convergent-Beam Electron Diffraction Peer-reviewed

    Yoichiro Ogata, Kenji Tsuda, Takuya Hashimoto

    Proceedings of the 16th International Microscopy Congress (IMC16),　1479　2006/09

  64. Electrostatic potential and electron density analysis of the ferroelectric phase of BaTiO3 using convergent-beam electron diffraction Peer-reviewed

    Kenji Tsuda, Michiyoshi Tanaka

    Proceedings of the 16th International Microscopy Congress (IMC16),　994　2006/09

  65. 24aYK-9 Charge Density Analysis of CuFe_2O_4 using Convergent-Beam Electron Diffraction

    Kimura D., Tsuda K., Kameoka S., Tsai A.P.

    Meeting abstracts of the Physical Society of Japan　61　(2)　788-788　2006/08/18

    Publisher: The Physical Society of Japan (JPS)

    ISSN： 1342-8349

  66. 24pYK-10 Electrostatic potential analysis of the ferroelectric phase of BaTiO_3 using convergent-beam electron diffraction

    Tsuda K., Tanaka M.

    Meeting abstracts of the Physical Society of Japan　61　(2)　794-794　2006/08/18

    Publisher: The Physical Society of Japan (JPS)

    ISSN： 1342-8349

  67. 24aPS-26 Crystal structure and charge density analysis of the charge- and orbital-ordered phase of La_<2-2x>Sr_<1+2x>Mn_2O_7 using convergent-beam electron diffraction

    Ogata Yoichiro, Tsuda Kenji, Murakami Youichi, Hirota Kazuma

    Meeting abstracts of the Physical Society of Japan　61　(2)　445-445　2006/08/18

    Publisher: The Physical Society of Japan (JPS)

    ISSN： 1342-8349

  68. 24aYK-8 Space group determinations of LaGa_<1-x>Mg_xO_<3-x/2> using convergent-beam electron diffraction

    Ogata Yoichiro, Tsuda Kenji, Hashimoto Takuya

    Meeting abstracts of the Physical Society of Japan　61　(2)　788-788　2006/08/18

    Publisher: The Physical Society of Japan (JPS)

    ISSN： 1342-8349

  69. 25aXH-2 Magnetic Properties and Structural Studies of LaMnO_<3+δ> Nanocrystals in MCM-41

    吉良 弘, 田村 秀和, 多々 見央, 安藤 悠也, 小野寺 貢, 中尾 裕則, 村上 洋一, 津田 健治, 大山 研司, 野尻 浩之, 山崎 誠志, 出口 博之

    Meeting abstracts of the Physical Society of Japan　61　(2)　357-357　2006/08/18

    Publisher: The Physical Society of Japan (JPS)

    ISSN： 1342-8349

  70. 27aPS-49 Convergent-beam electron diffraction study of La_<0.95>Sr_<2.05>Mn_2O_7

    Ogata Yoichiro, Tsuda Kenji, Murakami Youichi, Hirota Kazuma

    Meeting abstracts of the Physical Society of Japan　61　(1)　531-531　2006/03/04

    Publisher: The Physical Society of Japan (JPS)

    ISSN： 1342-8349

  71. 28pYA-9 Quantitative analysis of rocking-curves obtained from impurity-doped regions of Si II

    Mitsuishi H., Tsuda K., Terauchi M., Kawamura K.

    Meeting abstracts of the Physical Society of Japan　61　(1)　942-942　2006/03/04

    Publisher: The Physical Society of Japan (JPS)

    ISSN： 1342-8349

  72. 28pSC-10 Anomalous magnetic size effects on La_<1-x>Sr_xMnO_3 nanocrystals in the SBA-15

    Tajiri T., Deguchi H., Kohiki S., Mito M., Takagi S., Tsuda K., Murakami Y.

    Meeting abstracts of the Physical Society of Japan　61　(1)　481-481　2006/03/04

    Publisher: The Physical Society of Japan (JPS)

    ISSN： 1342-8349

  73. 27pYA-12 Space group determination of the low temperature ferroelectric phase of SrTiO(18)_3 III

    Tsuda K., Mitsuishi H., Noda Y., Kyomen T., Itoh M.

    Meeting abstracts of the Physical Society of Japan　61　(1)　930-930　2006/03/04

    Publisher: The Physical Society of Japan (JPS)

    ISSN： 1342-8349

  74. 28pSC-11 Magnetic Properties and Structural Studies of LaMnO_<3+δ> Nanocrystals in MCM-41 Mesoporous

    吉良 弘, 田村 秀和, 安藤 悠也, 小野寺 貢, 中尾 裕則, 村上 洋一, 津田 健治, 野尻 浩之, 山崎 誠志, 田尻 恭之, 出口 博之

    Meeting abstracts of the Physical Society of Japan　61　(1)　481-481　2006/03/04

    Publisher: The Physical Society of Japan (JPS)

    ISSN： 1342-8349

  75. Ge 濃度を制御したSi1-xGexの格子定数測定

    赤荻隆之, 津田健治, 寺内正己, 田中通義

    まてりあ　45　(12)　887-887　2006

    Publisher: The Japan Institute of Metals and Materials

    DOI： 10.2320/materia.45.887 　

    ISSN： 1340-2625

  76. 21aYM-13 Convergent-beam electron diffraction study of La_<2-2x>Sr_<1+2x>Mn_2O_7(x=0.525).

    Ogata Yoichiro, Tsuda Kenji, Tanaka Michiyoshi, Murakami Youichi, Hirota Kazuma

    Meeting abstracts of the Physical Society of Japan　60　(2)　822-822　2005/08/19

    Publisher: The Physical Society of Japan (JPS)

    ISSN： 1342-8349

  77. 21aYM-12 Quantitative analysis of Convergent-beam Electron Diffraction pattern obtained from impurity-doped Si.

    Mitsuishi H., Tsuda K., Terauchi M., Kawamura K.

    Meeting abstracts of the Physical Society of Japan　60　(2)　822-822　2005/08/19

    Publisher: The Physical Society of Japan (JPS)

    ISSN： 1342-8349

  78. 20pYM-3 Space group determination of the low temperature ferroelectric phase of SrTiO(18)_3 II

    Tsuda K., Mitsuishi H., Noda Y., Kyomen T., Itoh M.

    Meeting abstracts of the Physical Society of Japan　60　(2)　812-812　2005/08/19

    Publisher: The Physical Society of Japan (JPS)

    ISSN： 1342-8349

  79. 収束電子回折法による結晶構造・電子密度分布解析

    津田 健治

    日本結晶学会誌　47　(1)　50-54　2005/04

    Publisher: The Crystallographic Society of Japan

    DOI： 10.5940/jcrsj.47.50 　

    ISSN： 0369-4585

    More details Close

    A method to refine crystal structural parameters and charge density distribution using convergent-beam electron diffraction is described, which is based on the least-squares fitting between full dynamical calculations and energy-filtered intensities of two-dimensional CBED patterns. A function of parallel computation using a computer cluster was implemented to extend the applications of the method. Crystal structural parameters of the intermediate phase of hexagonal barium titanate (h-BaTiO3) was refined by the method.

  80. 収束電子回折法による電子密度分布の可視化

    津田 健治

    顕微鏡　40　(1)　55-58　2005/04

    Publisher: The Japanese Society of Microscopy

    DOI： 10.11410/kenbikyo2004.40.55 　

    ISSN： 1349-0958

  81. 25pYS-4 Quantitative analysis of rocking curves obtained from As-doped regions of Si III.

    Mitsuishi H., Tsuda K., Terauchi M., Kawamura K.

    Meeting abstracts of the Physical Society of Japan　60　(1)　916-916　2005/03/04

    Publisher: The Physical Society of Japan (JPS)

    ISSN： 1342-8349

  82. 25pYR-4 Space group determination of the low temperature ferroelectric phase of SrTiO(18)_3

    Tsuda K., Mitsuishi H., Noda Y., Kyomen T., Itoh M.

    Meeting abstracts of the Physical Society of Japan　60　(1)　914-914　2005/03/04

    Publisher: The Physical Society of Japan (JPS)

    ISSN： 1342-8349

  83. 25pYN-3 Structure and Magnetism of Mn oxide absorped MCM-41

    Tamura H., Kira H., Yuya Y., Takahashi T., Onodera M., Murakami Y., Yamazaki S., Tsuda K., Oyama K., Deguti H.

    Meeting abstracts of the Physical Society of Japan　60　(1)　800-800　2005/03/04

    Publisher: The Physical Society of Japan (JPS)

    ISSN： 1342-8349

  84. Frontiers of Electron Beam Analyses

    TERAUCHI Masami, ICHINOSE Hideki, TSUDA Kenji, KIMOTO Koji

    X-RAYS　47　(1)　2-2　2005/02/24

    Publisher: The Crystallographic Society of Japan

    DOI： 10.5940/jcrsj.47.2 　

    ISSN： 0369-4585

  85. 13pTJ-5 Quantitative analysis of rocking curves obtained from As-doped regions of Si

    Mitsuishi H., Tsuda K., Terauchi M., Kawamura K.

    Meeting abstracts of the Physical Society of Japan　59　(2)　863-863　2004/08/25

    Publisher: The Physical Society of Japan (JPS)

    ISSN： 1342-8349

  86. 13pTJ-7 Analysis of electron density distribution of La_<1-x>Sr_xCrO_3 (x=0.3) using CBED II

    Ogata Yoichiro, Tsuda Kenji, Tanaka Michiyoshi, Hashimoto Takuya

    Meeting abstracts of the Physical Society of Japan　59　(2)　863-863　2004/08/25

    Publisher: The Physical Society of Japan (JPS)

    ISSN： 1342-8349

  87. The Australian Conference on Microscopy and Microanalysis 18 (ACMM18)

    TSUDA Kenji

    39　(2)　137-137　2004/07/31

    ISSN： 1349-0958

  88. Test results of MIRAI-21 analytical electron microscope Peer-reviewed

    M. Mukai, T. Kaneyama, T. Tomita, K. Tsuno, M. Terauchi, K. Tsuda, D. Ioanoviciu, G. Martinez, M. Naruse, T. Honda, M. Tanaka

    Proceedings of 8th Asia-Pacific conference on electron microscopy　117-118　2004/06/09

  89. 収束電子回折法によるLaCrO3の結晶構造・電子密度分布解析

    津田健治, 小形曜一郎, 高木一成, 田中通義, 橋本拓也

    まてりあ　43　(12)　990-990　2004/04

    Publisher: The Japan Institute of Metals and Materials

    DOI： 10.2320/materia.43.990 　

    ISSN： 1340-2625

  90. 29pXK-8 Contrast of 180 domains of BaTiO_3 in electron microscope images

    Tanaka M., Omoto K., Tsuda K., Terauchi M.

    Meeting abstracts of the Physical Society of Japan　59　(1)　976-976　2004/03/03

    Publisher: The Physical Society of Japan (JPS)

    ISSN： 1342-8349

  91. 28aXM-7 Analysis of electron density distribution of La_<1-x>Sr_xCrO_3 using CBED

    Ogata Yoichiro, Tsuda Kenji, Tanaka Michiyoshi, Hashimoto Takuya

    Meeting abstracts of the Physical Society of Japan　59　(1)　959-959　2004/03/03

    Publisher: The Physical Society of Japan (JPS)

    ISSN： 1342-8349

  92. 28aXM-1 Application of the statistical dynamical theory to electron diffraction II

    Tsuda K., Terauchi M., Kawamura K.

    Meeting abstracts of the Physical Society of Japan　59　(1)　957-957　2004/03/03

    Publisher: The Physical Society of Japan (JPS)

    ISSN： 1342-8349

  93. 28aXM-8 Study of local strain measurement using convergent-beam electron diffraction IV

    Akaogi T., Tsuda K., Terauchi M., Tanaka M.

    Meeting abstracts of the Physical Society of Japan　59　(1)　959-959　2004/03/03

    Publisher: The Physical Society of Japan (JPS)

    ISSN： 1342-8349

  94. 28aXM-6 Analysis of charge density distribution using electron diffraction

    Tsuda K.

    Meeting abstracts of the Physical Society of Japan　59　(1)　959-959　2004/03/03

    Publisher: The Physical Society of Japan (JPS)

    ISSN： 1342-8349

  95. 28pXM-3 Quantitative analysis of rocking curves obtained from As-doped regions of Si

    Mitsuishi H., Tsuda K., Terauchi M., Kawamura K.

    Meeting abstracts of the Physical Society of Japan　59　(1)　968-968　2004/03/03

    Publisher: The Physical Society of Japan (JPS)

    ISSN： 1342-8349

  96. Study of local strain measurement using convergent-beam electron diffraction III

    Akaogi T., Tsuda K., Terauchi M., Tanaka M.

    Meeting abstracts of the Physical Society of Japan　58　(2)　866-866　2003/08/15

    Publisher: The Physical Society of Japan (JPS)

    ISSN： 1342-8349

  97. Evaluation of error of crystal structural parameters refined by CBED

    Ogata Y., Tsuda K., Tanaka M., Akishige Y.

    Meeting abstracts of the Physical Society of Japan　58　(2)　866-866　2003/08/15

    Publisher: The Physical Society of Japan (JPS)

    ISSN： 1342-8349

  98. CBED study of the orbital-ordered phase of LaMnO_3 III

    Ogata Y., Tsuda K., Tanaka M., Miyoshi S., Mizusaki J., Hirota K., Endoh Y.

    Meeting abstracts of the Physical Society of Japan　58　(2)　865-865　2003/08/15

    Publisher: The Physical Society of Japan (JPS)

    ISSN： 1342-8349

  99. Application of the statistical dynamical theory to electron diffraction

    Tsuda K., Terauchi M., Kawamura K.

    Meeting abstracts of the Physical Society of Japan　58　(2)　866-866　2003/08/15

    Publisher: The Physical Society of Japan (JPS)

    ISSN： 1342-8349

  100. Observation of As-doped region in Si by transmission electron microscopy II

    Terauchi M., Tsuda K., Kawamura K.

    Meeting abstracts of the Physical Society of Japan　58　(2)　874-874　2003/08/15

    Publisher: The Physical Society of Japan (JPS)

    ISSN： 1342-8349

  101. Application of the parallel computation to the retinement of crystal structural parameters using convergent-beam electron diffraction

    Ogata Yoichiro, Tsuda Kenji, Tanaka Michiyoshi, Akishige Yukikuni

    Meeting abstracts of the Physical Society of Japan　58　(1)　916-916　2003/03/06

    Publisher: The Physical Society of Japan (JPS)

    ISSN： 1342-8349

  102. Study of local strain measurement using convergent-beam electron diffraction II

    Akaogi T., Tsuda K., Terauchi M., Tanaka M.

    Meeting abstracts of the Physical Society of Japan　58　(1)　915-915　2003/03/06

    Publisher: The Physical Society of Japan (JPS)

    ISSN： 1342-8349

  103. Space-group determination of Sr_3Ru_2O_7 using convergent-beam electron diffraction study

    Tsuda K., Tanaka M., Noda Y., Aso N., Ikeda S., Yoshida Y., Uwatoko Y.

    Meeting abstracts of the Physical Society of Japan　58　(1)　425-425　2003/03/06

    Publisher: The Physical Society of Japan (JPS)

    ISSN： 1342-8349

  104. Convergent-beam electron diffraction study of structural phase transformations on pyrochlore-type oxide Cd_2Re_2O_7

    OISHI M., TSUDA K., TANAKA M., HANAWA M., HIROI Z.

    37　137-137　2002/11/27

    ISSN： 0417-0326

  105. Crystal structural analysis of the intermediate phase of hexagonal BaTio_3 using convergent-beam electron diffraction with parallel computation

    OGATA Yoichiro, TSUDA Kenji, TANAKA Michiyoshi, AKISHIGE Yukikuni

    37　138-138　2002/11/27

    ISSN： 0417-0326

  106. Study of local strain measurement by convergent beam electron diffraction

    AKAOGI T., TSUDA K., TERAUCHI M., TANAKA M.

    37　139-139　2002/11/27

    ISSN： 0417-0326

  107. Toward nano-scale analysis of crystal structures and electronic states

    TANAKA M., TERAUCHI M., TSUDA K., SAITOH K., MUKAI M., KANEYAMA T., TOMITA K., NARUSE M., TSUNO K., HONDA T.

    Electron-microscopy　37　1-4　2002/11/27

    Publisher: 日本電子顕微鏡学会

    ISSN： 0417-0326

  108. MIRAI-21 ANALYTICAL ELECTRON MICROSCOPE - PERFORMANCE OF THE MONOCHROMATOR -

    M. Mukai, T. Kaneyama, T. Tomita, K. Tsuno, M. Terauchi, K. Tsuda, K. Saitoh, M. Kersker, M. Naruse, T. Honda, M. Tanaka

    Proc. 15th Int. Cong. Electron Microscopy　2002/09

  109. Observation of As-doped region in Si by transmission electron microscopy

    Terauchi M., Tsuda K., Kawamura K

    Meeting abstracts of the Physical Society of Japan　57　(2)　807-807　2002/08/13

    Publisher: The Physical Society of Japan (JPS)

    ISSN： 1342-8349

  110. Study of local strain measurement using convergent-beam electron diffraction

    Akaogi T., Tsuda K., Terauchi M., Tanaka M.

    Meeting abstracts of the Physical Society of Japan　57　(2)　806-806　2002/08/13

    Publisher: The Physical Society of Japan (JPS)

    ISSN： 1342-8349

  111. Convergent-beam electron diffraction study of the orbital-ordered phase of LaMnO3 II

    Ogata Y., Tsuda K., Tanaka M., Hirota K., Endoh Y., Hashimoto T.

    Meeting abstracts of the Physical Society of Japan　57　(2)　423-423　2002/08/13

    Publisher: The Physical Society of Japan (JPS)

    ISSN： 1342-8349

  112. Convergent-beam electron diffraction study of structural phase transformations on pyrochlore-type oxide Cd2Re2O7 II

    Oishi M., Tsuda K., Tanaka M., Hanawa M., Hiroi Z.

    Meeting abstracts of the Physical Society of Japan　57　(2)　549-549　2002/08/13

    Publisher: The Physical Society of Japan (JPS)

    ISSN： 1342-8349

  113. Determination of Point-, Space-Groups using Convergent-Beam Electron Diffraction

    Kenji Tsuda

    Journal of the Crystallographic Society of Japan　44　201-212　2002/04

    DOI： 10.5940/jcrsj.44.201 　

  114. Refinement of Crystal Structural Parameters using Convergent-Beam Electron Diffraction

    Kenji Tsuda

    Journal of the Crystallographic Society of Japan　44　269-276　2002/04

  115. Elemental process of amorphization induced by electron irradiation in Si

    Jun Yamasaki, Seiji Takeda, Kenji Tsuda

    Physical Review B　66　(11)　115213-1-115213-10　2002/04

    DOI： 10.1103/PhysRevB.65.115213 　

  116. 24aWJ-1 Crystal structural analysis of the intermediate phase of hexagonal BaTiO_3 usingconvergent-beam electron diffraction

    Ogata Y., Tsuda K., Tanaka M., Akishige Y.

    Meeting abstracts of the Physical Society of Japan　57　(1)　875-875　2002/03/01

    Publisher: The Physical Society of Japan (JPS)

    ISSN： 1342-8349

  117. 25pYJ-4 Convergent-beam electron diffraction study of structural phase transformations on pyrochlore-type oxide Cd_2Re_2O_7

    Tsuda K., Oishi M., Tanaka M., Hanawa M., Hiroi Z.

    Meeting abstracts of the Physical Society of Japan　57　(1)　562-562　2002/03/01

    Publisher: The Physical Society of Japan (JPS)

    ISSN： 1342-8349

  118. 25pXS-1 Reexamination of origin of ferroelectric domain contrast in electron microscope images of BaTiO_3

    Omoto K., Tsuda K., Tanaka M.

    Meeting abstracts of the Physical Society of Japan　57　(1)　898-898　2002/03/01

    Publisher: The Physical Society of Japan (JPS)

    ISSN： 1342-8349

  119. Simulation of inelastic scattering intensity of t-BaTiO_3 in electron diffraction

    Omoto K., Tsuda K., Tanaka M.

    Meeting abstracts of the Physical Society of Japan　56　(2)　801-801　2001/09/03

    Publisher: The Physical Society of Japan (JPS)

    ISSN： 1342-8349

  120. Simulation of inelastic scattering intensity in electron diffraction VI

    Omoto K., Tsuda K., Tanaka M.

    Meeting abstracts of the Physical Society of Japan　56　(2)　800-800　2001/09/03

    Publisher: The Physical Society of Japan (JPS)

    ISSN： 1342-8349

  121. Space-group distinction between I23 and I2_13 by coherent CBED

    Saitoh K., Tsuda K., Terauchi M., Tanaka M.

    Meeting abstracts of the Physical Society of Japan　56　(2)　801-801　2001/09/03

    Publisher: The Physical Society of Japan (JPS)

    ISSN： 1342-8349

  122. Refinement of electron density of the high-temperature phase of LaCrO_3 using convergent-beam electron diffraction

    Tsuda K., Ogata Y., Tanaka M., Hashimoto T.

    Meeting abstracts of the Physical Society of Japan　56　(2)　800-800　2001/09/03

    Publisher: The Physical Society of Japan (JPS)

    ISSN： 1342-8349

  123. Structure analysis of a monoclinic Al_<13>Co_4 approximant by the convergent-beam electron diffraction method III

    Yokosawa T., Saitoh K., Tsuda K., Tanaka M., Tsai A. P.

    Meeting abstracts of the Physical Society of Japan　56　(2)　636-636　2001/09/03

    Publisher: The Physical Society of Japan (JPS)

    ISSN： 1342-8349

  124. Temperature dependence of radiation-induced amorphization in Si

    Yamasaki J., Takeda S., Tsuda K.

    Meeting abstracts of the Physical Society of Japan　56　(2)　808-808　2001/09/03

    Publisher: The Physical Society of Japan (JPS)

    ISSN： 1342-8349

  125. Convergent-beam electron diffraction study of the orbital ordered phase of LaMnO_3

    Ogata Y., Tsuda K., Tanaka M., Hirota K., Endoh Y.

    Meeting abstracts of the Physical Society of Japan　56　(2)　426-426　2001/09/03

    Publisher: The Physical Society of Japan (JPS)

    ISSN： 1342-8349

  126. Crystal Structure Analysis using Electron Diffraction -Toward Determination of Charge Density Distribution-

    K. Tsuda, M. Tanaka

    Solid State Physics　36　320-329　2001/04

  127. Space group determination of LaMnO_<3-δ> using convergent-beam electron diffraction

    Tsuda K., Ogata Y., Tanaka M., Saitoh E., Kimura T., Tokura Y.

    Meeting abstracts of the Physical Society of Japan　56　(1)　454-454　2001/03/09

    Publisher: The Physical Society of Japan (JPS)

    ISSN： 1342-8349

  128. Simulation of inelastic scattering intensity in electron diffraction V

    Omoto K., Tsuda K., Tanaka M.

    Meeting abstracts of the Physical Society of Japan　56　(1)　852-852　2001/03/09

    Publisher: The Physical Society of Japan (JPS)

    ISSN： 1342-8349

  129. Structural Studies of Quasicrystals using Electron Microscopy

    Saitoh K., Yokosawa T., Tsuda K., Tanaka M., Tsai A. P.

    Meeting abstracts of the Physical Society of Japan　55　(2)　659-659　2000/09/10

    Publisher: The Physical Society of Japan (JPS)

    ISSN： 1342-8349

  130. Simulation of inelastic scattering intensity in electron diffraction IV

    Omoto K., Tsuda K., Tanaka M.

    Meeting abstracts of the Physical Society of Japan　55　(2)　810-810　2000/09/10

    Publisher: The Physical Society of Japan (JPS)

    ISSN： 1342-8349

  131. Elementary process of amorphization in Si

    Yamasaki J., Takeda S., Tsuda K.

    Meeting abstracts of the Physical Society of Japan　55　(2)　831-831　2000/09/10

    Publisher: The Physical Society of Japan (JPS)

    ISSN： 1342-8349

  132. Structural Study fo α'-NaV_2O_5 using Convergent-Beam Electron Diffraction

    TSUDA K., AMAMIYA S., TANAKA M., NODA Y., ISOBE M., UEDA Y.

    35　323-323　2000/05/01

    ISSN： 0417-0326

  133. Structure Analysis of LaCrO_3 using Convergent-Beam Electron Diffraction

    TSUDA K., TAKAGI K., TANAKA M., HASHIMOTO T.

    35　324-324　2000/05/01

    ISSN： 0417-0326

  134. Structural study of La_<1-x>Sr_xO_3(X=0.10, 0.11) using convergent-besm electron diffraction

    Tsuda K., Tanaka M., Hirota K., Endoh Y.

    Meeting abstracts of the Physical Society of Japan　55　(1)　427-427　2000/03/10

    Publisher: The Physical Society of Japan (JPS)

    ISSN： 1342-8349

  135. Structure analysis of a monoclinic Al_<13>Co_4 approximant by the convergent-beam electron diffraction method II

    Yokozawa T., Saitoh K., Tsuda K., Tanaka M., Tsai A. P.

    Meeting abstracts of the Physical Society of Japan　55　(1)　689-689　2000/03/10

    Publisher: The Physical Society of Japan (JPS)

    ISSN： 1342-8349

  136. Simulation of inelastic scattering intensity in electron diffraction III

    Omoto K., Tsuda K., Tanaka M.

    Meeting abstracts of the Physical Society of Japan　55　(1)　859-859　2000/03/10

    Publisher: The Physical Society of Japan (JPS)

    ISSN： 1342-8349

  137. Structural study of La_<1-x>Sr_xCrO_3(x=0.20) using Convergent-Beam Electron Diffraction

    Takagi K., Tsuda K., Tanaka M., Hashimoto T.

    Meeting abstracts of the Physical Society of Japan　55　(1)　859-859　2000/03/10

    Publisher: The Physical Society of Japan (JPS)

    ISSN： 1342-8349

  138. Electron diffraction study of the low temperature phase of α'-NaV_2O_5

    Amamiya S., Tsuda K., Tanaka M., Noda Y., Isobe M., Ueda Y.

    Meeting abstracts of the Physical Society of Japan　55　(1)　498-498　2000/03/10

    Publisher: The Physical Society of Japan (JPS)

    ISSN： 1342-8349

  139. 27aYQ-1 Space group determination of α^1-NaV_2O_5 using Convergent-Beam Electron Diffraction

    Amamiya S, Tsuda K, Tanaka M, Noda Y, Isobe M, Ueda Y

    Meeting abstracts of the Physical Society of Japan　54　(2)　432-432　1999/09/03

    Publisher: The Physical Society of Japan (JPS)

    ISSN： 1342-8349

  140. 24pJ-3 Structural study of La_<1-x>Sr_xMnO_3(x〜1/8) using convergent-beam electron diffraction III

    Tsuda K, Tanaka M, Hirota K, Endoh Y

    Meeting abstracts of the Physical Society of Japan　54　(2)　475-475　1999/09/03

    Publisher: The Physical Society of Japan (JPS)

    ISSN： 1342-8349

  141. 26pK-2 Electron Diffraction Study of Ferroelectrics

    Tanaka M, Tsuda K

    Meeting abstracts of the Physical Society of Japan　54　(2)　909-909　1999/09/03

    Publisher: The Physical Society of Japan (JPS)

    ISSN： 1342-8349

  142. 27pYA-9 simulation of inelastic scattering intensity in electron diffraction II

    Omoto K, Tsuda K, Tanaka M

    Meeting abstracts of the Physical Society of Japan　54　(2)　929-929　1999/09/03

    Publisher: The Physical Society of Japan (JPS)

    ISSN： 1342-8349

  143. 27pYA-10 Structure analysis of monoclinic al_<13>Co_4 approximant by convergent-beam electron diffraction method

    Yokosawa T, Saitoh K, Tsuda K, Tanaka M, Tsai A.P.

    Meeting abstracts of the Physical Society of Japan　54　(2)　930-930　1999/09/03

    Publisher: The Physical Society of Japan (JPS)

    ISSN： 1342-8349

  144. 27pYA-8 Refinement of structual parameters of LaCrO_3

    Takagi K, Tsuda K, Tanaka M, Hashimoto T

    Meeting abstracts of the Physical Society of Japan　54　(2)　929-929　1999/09/03

    Publisher: The Physical Society of Japan (JPS)

    ISSN： 1342-8349

  145. 25aYL-1 Structural properties of amorphous Si produced by electron irradiation

    Yamasaki J, Takeda S, Tsuda K

    Meeting abstracts of the Physical Society of Japan　54　(2)　882-882　1999/09/03

    Publisher: The Physical Society of Japan (JPS)

    ISSN： 1342-8349

  146. Application of the CBED method for the determination of lattice parameters of cubic SiC films on 6H SiC substrates

    KAISER Ute, SAITOH Koh, TSUDA Kenji, TANAKA Michiyoshi

    Journal of Electron Microscopy　48　(3)　221-233　1999/06/01

    Publisher: Published for the Japanese Society of Electron Microscopy by Oxford University Press

    ISSN： 0022-0744

  147. 28p-XJ-6 Simulation of inelastic scattering intensity in electron diffraction

    Omoto K., Tsuda K., Tanaka M.

    Meeting abstracts of the Physical Society of Japan　54　(1)　348-348　1999/03/15

    Publisher: The Physical Society of Japan (JPS)

    ISSN： 1342-8349

  148. 29a-C-3 Structural study of La_<1-x>Sr_xMnO_3 (x=0.12) using convergent-beam electron diffraction II

    Tsuda K., Tanaka M., Hirota K., Endoh Y.

    Meeting abstracts of the Physical Society of Japan　54　(1)　578-578　1999/03/15

    Publisher: The Physical Society of Japan (JPS)

    ISSN： 1342-8349

  149. 28a-G-5 Structural study of an monoclinic τ^2-Al_<13>Co_4 approximant by the high-angle annular dark-field method

    Saitoh K., Tsuka K., Tanaka M., Tsai A.P.

    Meeting abstracts of the Physical Society of Japan　54　(1)　503-503　1999/03/15

    Publisher: The Physical Society of Japan (JPS)

    ISSN： 1342-8349

  150. Structural study of La_<1-x>Sr_xMnO_3(x=0.12) using convergent-beam electron diffraction

    TSUDA K., TANAKA M., HIROTA K., ENDOH Y.

    Meeting abstracts of the Physical Society of Japan　53　(2)　724-724　1998/09/05

    Publisher: The Physical Society of Japan (JPS)

    ISSN： 1342-8349

  151. Refinement of CdS structure parameter with Convergent Beam Electron Diffraction II

    KANDA N., TSUDA K., TANAKA M.

    Meeting abstracts of the Physical Society of Japan　53　(1)　343-343　1998/03/10

    Publisher: The Physical Society of Japan (JPS)

    ISSN： 1342-8349

  152. Crystal structure analysis of c-BaTiO_3 using an energy-filter transmission electron microscope

    TSUDA K., TANAKA M.

    Meeting abstracts of the Physical Society of Japan　53　(1)　115-115　1998/03/10

    Publisher: The Physical Society of Japan (JPS)

    ISSN： 1342-8349

  153. Structure analysis of Al_<72>Ni_<20>Co_8 decagonal quasicrystal by convergent-beam electron diffraction method

    TANAKA M., SAITOH K., TSUDA K., TSAI A.P

    Meeting abstracts of the Physical Society of Japan　53　(1)　494-494　1998/03/10

    Publisher: The Physical Society of Japan (JPS)

    ISSN： 1342-8349

  154. Structural study of Al-Ni-Co decagonal quasicrystals with superlattice orders by the high-angle annular dark-field method

    SAITOH K., TSUDA K., TANAKA M., TSAI A.P, KAWASAKI M.

    Meeting abstracts of the Physical Society of Japan　53　(1)　494-494　1998/03/10

    Publisher: The Physical Society of Japan (JPS)

    ISSN： 1342-8349

  155. Space group dctemination of BaPb_<1-x>Bi_xO_3 by Convergent-Bcam Electron Diffraction II

    SHIONO J., TSUDA K., TANAKA M., MIZUTANA J., HASHIMOTO T., HIRASAWA R.

    Meeting abstracts of the Physical Society of Japan　53　(1)　625-625　1998/03/10

    Publisher: The Physical Society of Japan (JPS)

    ISSN： 1342-8349

  156. 7p-R-7 Observation of decagonal quasicrystals by the high-angle annular dark-field method

    Saitoh K., Tsuda K., Tanaka M., Kaneko K., A.P. Tsai

    Meeting abstracts of the Physical Society of Japan　52　(2)　581-581　1997/09/16

    Publisher: The Physical Society of Japan (JPS)

    ISSN： 1342-8349

  157. 7p-R-8 Observation of decagonal quasicrystals by the high-angle annular dark-field method II

    Saitoh K., Tsuda K., Tanaka M., Kaneko K., A.P. Tsai

    Meeting abstracts of the Physical Society of Japan　52　(2)　582-582　1997/09/16

    Publisher: The Physical Society of Japan (JPS)

    ISSN： 1342-8349

  158. 6a-K-4 Space group determination of BaPb_<1-x>Bi_xO_3 by Convergent-Beam Electron Diffraction

    Shiono J., Tsuda K., Tanaka M., Mizutani J., Hashimoto T., Hirasawa R.

    Meeting abstracts of the Physical Society of Japan　52　(2)　612-612　1997/09/16

    Publisher: The Physical Society of Japan (JPS)

    ISSN： 1342-8349

  159. 6p-X-3 Application of Bethe's dynamical theory to CBED

    Tsuda K., Tanaka M.

    Meeting abstracts of the Physical Society of Japan　52　(2)　396-397　1997/09/16

    Publisher: The Physical Society of Japan (JPS)

    ISSN： 1342-8349

  160. 5a-X-4 Refinement of structural parameters of CdS using Convergent-Beam Electron Diffraction

    Kanda N., Tsuda K., Tanaka M.

    Meeting abstracts of the Physical Society of Japan　52　(2)　388-388　1997/09/16

    Publisher: The Physical Society of Japan (JPS)

    ISSN： 1342-8349

  161. 5p-X-7 Crystal Structure Analysis by Convergent-Beam Electron Diffraction

    Tsuda K., Saitoh K., Terauchi M., Tanaka M., Kaneyama T., Tsuno K., Honda T.

    Meeting abstracts of the Physical Society of Japan　52　(2)　392-392　1997/09/16

    Publisher: The Physical Society of Japan (JPS)

    ISSN： 1342-8349

  162. 28a-A-8 Application of an electron microscope with an omega-type energy filter to the convergent-beam electrion diffraction method

    Saitoh K, Tsuda K, Terauchi M, Tanaka M, Kaneyama T, Tsuno S, Honda T

    Meeting abstracts of the Physical Society of Japan　52　(1)　373-373　1997/03/17

    Publisher: The Physical Society of Japan (JPS)

    ISSN： 1342-8349

  163. 28a-A-5 Development of an Energy-Filter TEM and its Application to Crystal Structure Analysis

    Tanaka M, Saitoh K, Tsuda K, Terauchi M, Kaneyama T, Tsuno K, Honda T

    Meeting abstracts of the Physical Society of Japan　52　(1)　372-372　1997/03/17

    Publisher: The Physical Society of Japan (JPS)

    ISSN： 1342-8349

  164. 28a-A-7 Development of Energy-Filter FEG-TEM

    Kaneyama T, Tsuno K, Honda T, Tsuda K, Terauchi M, Tanaka M

    Meeting abstracts of the Physical Society of Japan　52　(1)　372-372　1997/03/17

    Publisher: The Physical Society of Japan (JPS)

    ISSN： 1342-8349

  165. 28a-A-9 Developement of software for crystal structure analysis using convergent-beam electron diffraction

    Tsuda K, Saitoh K, Terauchi M, Tanaka M

    Meeting abstracts of the Physical Society of Japan　52　(1)　373-373　1997/03/17

    Publisher: The Physical Society of Japan (JPS)

    ISSN： 1342-8349

  166. 28a-A-6 Design and construction of Wollnik type omega filter

    Tsuno K, Kaneyama T, Honda T, Tsuda K, Terauchi M, Tanaka M

    Meeting abstracts of the Physical Society of Japan　52　(1)　372-372　1997/03/17

    Publisher: The Physical Society of Japan (JPS)

    ISSN： 1342-8349

  167. 30p-YX-6 Structural study of decagonal quasicrystals using convergent-beam electron diffraction and high-resolution electron microscopy

    Tsuda K, Ogawa I, Saitoh K, Tanaka M, Tsai A.P, Inoue A, Masumoto K

    Meeting abstracts of the Physical Society of Japan　52　(1)　546-546　1997/03/17

    Publisher: The Physical Society of Japan (JPS)

    ISSN： 1342-8349

  168. Convergent-Beam Electron Diferaction and Electron Microscope Studies of Decagonal Quasicrystals

    Tsuda K, Saito K, Terauchi M, Tanaka M, Tsai A.P, Inoue A, Masumoto T

    Proceedings of 6th International Conference on Quasicrystals　11-18　1997

  169. Structure analysis of decagonal guasicrystals with pentagonal cluster columns using convergent-beam electron diffraction II

    Saitoh K., Tsuda K., Tanaka M., Tsai A.P., Inoue A., Masumoto T.

    Abstracts of the meeting of the Physical Society of Japan. Sectional meeting　1996　(3)　313-313　1996/09/13

    Publisher: The Physical Society of Japan (JPS)

  170. Study of structure of decagonal quasicrystal of Al-Ni-Fe alloys using convergent-beam electron diffration and high-resolution electron microscopy

    Ogawa I., Saitoh K., Tsuda K., Tanaka M., Tsai A.P., Inoue A., Masumoto T.

    Abstracts of the meeting of the Physical Society of Japan. Sectional meeting　1996　(3)　313-313　1996/09/13

    Publisher: The Physical Society of Japan (JPS)

  171. Convergent -Beam Electron Diffraction and Electron Microscope Studies of Decagonal Quasicrystals

    津田 健治

    The Science Report of The Pesearch Institutes of Tohuku University (RITU)　A42　(1)　199-205　1996/04

  172. 2p-R-3 Crystal structure analysis of low temperature phase of GeTe by convergent-beam electron diffraction

    Tsuda K., Tanaka M.

    Abstracts of the meeting of the Physical Society of Japan. Annual meeting　51　(2)　109-109　1996/03/15

    Publisher: The Physical Society of Japan (JPS)

  173. 2p-Q-7 Structural analysis of decagonal quasicrystals with pentagonal cluster columns using convergent-beam electron diffraction

    Saitoh K., Tsuda K., Tanaka M., Tsai A. P., Inoue A., Masumoto T.

    Abstracts of the meeting of the Physical Society of Japan. Annual meeting　51　(3)　299-299　1996/03/15

    Publisher: The Physical Society of Japan (JPS)

  174. Structural model of decagonal quasicrystals of Al-Cu-Co alloys with a pentagonal atom cluster column

    Saitoh K., Tsuda K., Tanaka M., Tsai A.P., Inoue A., Masumoto T.

    Abstracts of the meeting of the Physical Society of Japan. Sectional meeting　1995　(3)　268-268　1995/09/12

    Publisher: The Physical Society of Japan (JPS)

  175. 28p-L-5 Crystal structure analysis by convergent-beam electron diffraction

    Tsuda Kenji, Tanaka Michiyoshi

    Abstracts of the meeting of the Physical Society of Japan. Sectional meeting　1995　(2)　540-540　1995/09/12

    Publisher: The Physical Society of Japan (JPS)

  176. Convergent-beam electron diffraction and high resolution electron microscope study on Al-Ni-Co decagonal quasicrystals II

    Nishida Y., Tsuda K., Tanaka M., Tsai A.P., Inoue A., Masumoto T.

    Abstracts of the meeting of the Physical Society of Japan. Annual meeting　50　(3)　298-298　1995/03/16

    Publisher: The Physical Society of Japan (JPS)

  177. Convergent-Beam Electron Diffraction Study of Structural Change of Al-Ni-Fe Decogonal Quasicrystal

    Saitoh K., Tsuda K., Tanaka M., Tsai A.P., Inoue A., Masumoto T.

    Abstracts of the meeting of the Physical Society of Japan. Annual meeting　50　(3)　298-298　1995/03/16

    Publisher: The Physical Society of Japan (JPS)

  178. Crystal structure analysis of SrTiO_3 by convergent-beam electron diffraction at low temperature

    Tsuda K, Tanaka M

    Abstracts of the meeting of the Physical Society of Japan. Annual meeting　50　(2)　94-94　1995/03/16

    Publisher: The Physical Society of Japan (JPS)

  179. 3p-X-3 Observation of stacking faults using coherent convergent-beam electron diffraction

    Tsuda K, Terauchi M, Tanaka M, Kaneyama T, Honda T

    Abstracts of the meeting of the Physical Society of Japan. Sectional meeting　1994　(2)　449-449　1994/08/16

    Publisher: The Physical Society of Japan (JPS)

  180. 2a-YC-6 Electron Microscope study of Phase Transition of Al-Cu-Co Decogonal Quasicrystals

    Saitoh K, Tsuda K, Tanaka M, Tsai A.P., Inoue A, Masumoto K

    Abstracts of the meeting of the Physical Society of Japan. Sectional meeting　1994　(3)　181-181　1994/08/16

    Publisher: The Physical Society of Japan (JPS)

  181. 2a-YC-7 Study of decagonal quasicrystal of Al-Ni-Co alloys using convergent-beam electron deffraction and high-reaolution electron microscopy

    Nishida Y, Tsuda K, Tanaka M, Tsai A.P., Inoue A, Masumoto K

    Abstracts of the meeting of the Physical Society of Japan. Sectional meeting　1994　(3)　182-182　1994/08/16

    Publisher: The Physical Society of Japan (JPS)

  182. 29a-YG-2 Study of decagonal quasicrystals of Al-Ni-Rh and Al-Ni alloys using convergent-beam electron diffraction

    Nishida Y., Tsuda K., Tanaka M., Tsai A.P., Inoue A., Masumoto T.

    Abstracts of the meeting of the Physical Society of Japan. Annual meeting　49　(3)　250-250　1994/03/16

    Publisher: The Physical Society of Japan (JPS)

  183. 29a-YG-3 Electron Microscope Study on Phase Transition of Al-Cu-Co and Al-Co Decogonal Quasicrystals

    Saitoh K., Tsuda K., Tanaka M., Tsai A.P., Inoue A., Masumoto K.

    Abstracts of the meeting of the Physical Society of Japan. Annual meeting　49　(3)　251-251　1994/03/16

    Publisher: The Physical Society of Japan (JPS)

  184. 29a-YG-1 Structure model of noncentrosymmetric decagonal quasicrystals

    Tsuda K., Saitoh K., Tanaka M., Tsai A.P., Inoue A., Masumoto T.

    Abstracts of the meeting of the Physical Society of Japan. Annual meeting　49　(3)　250-250　1994/03/16

    Publisher: The Physical Society of Japan (JPS)

  185. Convergent-Beam Electron Diffraction and Electron Microscope Studies on Decagonal Quasicrystals of Al-Ni-Fe and Al-Cu-Co Alloys

    Tsuda K, Saito M, Saito K, Terauchi M, Tanaka M, Tsai A.P, Inoue A, Masumoto T

    Materials Science Forum　150　255-266　1994

  186. Approaches to an icosahedral glass model for the icosahedral phase formed by transition from the amorphous state

    Tsai, A.P., Hiraga, K., Inoue, A., Masumoto, T., Satoh, K., Tsuda, K., Tanaka, M.

    Materials Science and Engineering A　181-182　(C)　346-350　1994

    DOI： 10.1016/0921-5093(94)90731-5 　

  187. 13a-DL-6 Observation of Stacking Faults using Coherent Convergent-Beam Electron Diffraction

    Terauchi M., Tsuda K., Tanaka M.

    Abstracts of the meeting of the Physical Society of Japan. Sectional meeting　1993　(2)　586-586　1993/09/20

    Publisher: The Physical Society of Japan (JPS)

  188. 15p-A-2 Study of Noncentrosymmeric Decagonal Quasicrystal of Al-Cu-Co

    Saitoh A., Tsuda K., Tanaka M., Tsai A.P., Inoue A., Masumoto K.

    Abstracts of the meeting of the Physical Society of Japan. Sectional meeting　1993　(3)　281-281　1993/09/20

    Publisher: The Physical Society of Japan (JPS)

  189. 15p-A-1 Study of decagonal quasicrystal of Al-Ni-Ir alloys using convergent-beam electron diffraction

    Tsuda K., Nishida Y., Saitoh K., Tanaka M., Tsai A.P., Inoue A., Masumoto T.

    Abstracts of the meeting of the Physical Society of Japan. Sectional meeting　1993　(3)　281-281　1993/09/20

    Publisher: The Physical Society of Japan (JPS)

  190. 12a-J-1 Space-group determination of the low temperature phase of hexagonal BaTiO_3

    Tsuda K., Tanaka M.

    Abstracts of the meeting of the Physical Society of Japan. Sectional meeting　1993　(2)　64-64　1993/09/20

    Publisher: The Physical Society of Japan (JPS)

  191. 31p-X-2 Study of Noncentrosymetric Decagonal Quasicrysral of Al-Cu-Co using Convergent-Beam Electron Diffraction

    Saitoh K., Tsuda K., Tanaka M., Tsai A.P., Inoue A., Masumoto T.

    Abstracts of the meeting of the Physical Society of Japan. Annual meeting　48　(3)　220-220　1993/03/16

    Publisher: The Physical Society of Japan (JPS)

  192. 29p-AB-7 Dynamical calculation of coherent convergent-beam electron diffraction patterns

    Tsuda K., Terauchi M., Saito M., Kamimura O., Tanaka M.

    Abstracts of the meeting of the Physical Society of Japan. Annual meeting　48　(2)　497-497　1993/03/16

    Publisher: The Physical Society of Japan (JPS)

  193. 29p-ZB-6 Coherent Convergent-Beam Electron Diffraction

    Tanaka M., Terauchi M., Tsuda K., Saito M., Kamimura O.

    Abstracts of the meeting of the Physical Society of Japan. Annual meeting　48　(2)　497-497　1993/03/16

    Publisher: The Physical Society of Japan (JPS)

  194. 29p-ZB-10 Observation of Glide Planes using Coherent Convergent-Beam Electron Diffraction II

    Kamimura O., Terauchi M., Saito M., Tsuda K., Tanaka M.

    Abstracts of the meeting of the Physical Society of Japan. Annual meeting　48　(2)　499-499　1993/03/16

    Publisher: The Physical Society of Japan (JPS)

  195. 31p-A-3 Crystal structure analysis of the intermediate Phase of hexagonal BaTiO_3

    Tsuda K., Tanaka M.

    Abstracts of the meeting of the Physical Society of Japan. Annual meeting　48　(2)　93-94　1993/03/16

    Publisher: The Physical Society of Japan (JPS)

  196. 30p-ZB-6 Applibation of imaging plate to convergent-beam electron diffraction

    Tsuda K., Takizawa M., Tanaka M.

    Abstracts of the meeting of the Physical Society of Japan. Annual meeting　2　511-511　1993

    Publisher: The Physical Society of Japan (JPS)

  197. 28a-ZC-3 Crystal structure analysis of intermediate phase of hexagonal BaTiO_3

    Tsuda K, Tanaka M

    1992　(2)　96-96　1992/09/14

    Publisher: The Physical Society of Japan (JPS)

  198. 27p-S-6 Crystal structure Analysis of CdS using convergent-beam electron diffraction

    Tsuda K, Tanaka M

    1992　(2)　566-566　1992/09/14

    Publisher: The Physical Society of Japan (JPS)

  199. 27p-S-8 Quantitative evaluation of symmentry of Convergent-Beam Electron Diffraction patterns II

    Takizawa M, Tsuda K, Tanaka M

    1992　(2)　567-567　1992/09/14

    Publisher: The Physical Society of Japan (JPS)

  200. 30a-ZR-3 Crystal structure analysis of intermediate phase of hexagonal BaTiO_3

    Tsuda K., Tanaka M.

    47　(2)　102-102　1992/03/12

    Publisher: The Physical Society of Japan (JPS)

  201. 27a-ZB-7 Quantitative estimation of symmtry of Convergent-Beam Electron Diffraction pattern

    Takizawa M, Tsuda K, Tanaka M

    47　(2)　501-501　1992/03/12

    Publisher: The Physical Society of Japan (JPS)

  202. Space-Group Determination of a New Superconductor (Nd_0.66Sr_0.205Ce_0.135)_2CuO_<4-δ> Using Convergent-Beam Electron Diffraction

    TSUDA Kenji, TANAKA Michiyoshi, Sakanoue Jun, Sawa Hiroshi, Suzuki Seiichiro, AKIMITSU Jun

    2　43-45　1992/03

    Publisher: Aoyama Gakuin University

    ISSN： 0917-6713

  203. 30p-L-5 Convergent-beam electron diffraction study of Al-Ni-Fe quasicrystals

    Fujiwara A., Tsuda K., Terauchi M., Tanaka M., Tsai An-Pang, Inoue A., Masumoto T.

    46　(2)　529-529　1991/09/12

    Publisher: The Physical Society of Japan (JPS)

  204. 25a-Q-5 Convergent-Beam Electron Diffraction patterns obtained by Imaging Plates

    Tsuda K., Tanaka M.

    1991　(2)　527-527　1991/03/11

    Publisher: The Physical Society of Japan (JPS)

  205. 24p-Q-8 Crystal structure analysis of intermediate phase of hexagonal BaTiO_3 by Convergent-Beam Electron Diffraction II

    Tsuda K., Tanaka M.

    1991　(2)　523-523　1991/03/11

    Publisher: The Physical Society of Japan (JPS)

  206. Structure model of Al_<70>Ni_<15>Fe_<15> decagonal quasicrystal

    Tsuda K., Saito M., Tanaka M.

    1990　(3)　212-212　1990/10/02

    Publisher: The Physical Society of Japan (JPS)

  207. 2p-TA-10 Crystal structure analysis of intermediate phase of hexagonal BaTi0_3 by Convergent-Beam Electron Diffraction

    Tsuda K., Tanaka K.

    1990　(2)　502-502　1990/09/12

    Publisher: The Physical Society of Japan (JPS)

  208. Energy Filter for Crystal Structure Analysis by Convergent-beam electron diffraction

    Tsuda K., Inoue M., Tanaka M.

    45　(2)　476-476　1990/03/16

    Publisher: The Physical Society of Japan (JPS)

  209. 6p-W-5 Validity of the Bethe approximation in a many-beam dynamical calculation

    Tsuda K., Tanaka M.

    1989　(2)　487-487　1989/09/12

    Publisher: The Physical Society of Japan (JPS)

  210. 6p-W-9 Space-Group determination of high Tc superconductors (Nd_<0.66>Sr_<0.205>Ce_<0.135>)_2CuO_<4-δ> and Nd_<1-x>Ce_x)_2(Ba_<1-y>Nd_y)_2Cu_3O_<10-ε>

    Tsuda K., Sakanoue J., Tanaka M., Sawa H., Suzuki S., Akimitsu J.

    1989　(2)　489-489　1989/09/12

    Publisher: The Physical Society of Japan (JPS)

  211. 31a-TH-10 Structure Analysis by Convergert-beam electron diffraction

    Tsuda K., Tanaka M.

    44　(2)　447-447　1989/03/28

    Publisher: The Physical Society of Japan (JPS)

  212. 5a-PS-36 収束電子回折法によるBi-Sr-Ca-Cu-O系の空間群の決定

    津田 健治, 田中 通義, 遼藤 康夫, 日高 義和, 小田 研, 鈴木 実, 村上 敏明

    秋の分科会講演予稿集　1988　(3)　232-232　1988/09/16

    Publisher: 一般社団法人日本物理学会

  213. 6a-B5-1 収束電子回折法による原子位置の決定I

    津田 健治, 田中 通義

    秋の分科会講演予稿集　1988　(2)　459-459　1988/09/16

    Publisher: 一般社団法人日本物理学会

  214. 27p-PA-4 電子回折法によるYBa_2Cu_3O_<7-y>の研究

    津田 健治, 寺内 正己, 田中 通義, 小野 晃

    秋の分科会講演予稿集　1987　(3)　198-198　1987/09/16

    Publisher: 一般社団法人日本物理学会

  215. 27p-PS-5 収束電子回折法によるLa_2CuO_<4-δ>の空間群の決定

    津田 健治, 田中 通義, 山田 和芳, 遠藤 康夫, 日高 義和, 小田 研, 鈴木 実, 村上 敏明

    秋の分科会講演予稿集　1987　(3)　199-199　1987/09/16

    Publisher: 一般社団法人日本物理学会

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Books and Other Publications 8

  1. ナノ材料解析の実際

    津田健治, 筆, 米澤徹, 朝倉清髙, 幾原雄一, 編著

    講談社サイエンティフィク　2016/06/17

    ISBN: 9784061543928

    More details Close

    米澤徹／朝倉清髙／ 幾原雄一・編著

  2. やさしい電子回折と初等結晶学（電子回折図形の指数付け、収束電子回折の使い方） 改訂新版

    田中通義, 寺内正己, 津田健治

    共立出版　2014/12

  3. The Fifth Series of Experimental Chemistry Vol.11, Spectroscopy and Diffraction III

    津田健治

    丸善　2006/04

  4. 形の科学百科事典

    津田健治, 齋藤晃, 寺内正己, 田中通義

    朝倉書店　2004/04

  5. Convergent-Beam Electron Diffraction IV

    M.Tanaka, M.Terauchi, K.Tsuda, K.Saitoh

    JEOL　2002/04

  6. Convergent-Beam Electron Diffraction and Electron Microscope Studies of Decagonal Quasicrystals

    津田 健治

    Proceedings of Internation Conference on Quasicrystals　1998/04

  7. Convergent-Beam Electron Diffraction III

    津田 健治

    JEOL-Maruzen　1995/04

  8. Convergent-beam electron diffraction and electron microscope studies on decagonal quasicrystals of Al-Ni-Fe and Al-Cu-Co alloys

    津田 健治

    Proc. Symp. on Quasicrystals and Imperfectly Ordered Crystals　1994/04

Show all Show first 5

Presentations 120

  1. Elastic wave excitation on piezoelectric nano-film using GHz pulsed e-beam

    Y. K. Sato, K. Tsuda, S.A. Reisbick, D. Morikawa, M. Terauchi, Y. Zhu

    2025/03/19

  2. Charge density analysis of strontium titanate using quantitative convergent-beam electron diffraction

    Bikas Aryal, Mostafa Eid, Andrew E. Smith, Daisuke Morikawa, Tianyu Liu, Kenji Tsuda, Naruki Tsuji, Yoshiharu Sakurai, Sizhuo Yu, Jean-Michel Gille, Laure Bourgeois, Philip NH Nakashima

    13th Asia Pacific Microscopy Congress　2025/02/03

  3. Crystal Structure and Charge Density Analysis at Twin Boundary using Multiple Convergent-beam Electron Diffraction Patterns

    Daisuke Morikawa, Tianyu Liu, Kenji Tsuda

    13th Asia Pacific Microscopy Congress　2025/02/03

  4. Chirality Determination Using Qualitative Bijvoet Difference by 3D ED Analysis

    Tianyu Liu, Daisuke Morikawa, Hirofumi Kurokawa, Shun Narai, Yusuke Seto, Koji Yonekura, Kenji Tsuda

    13th Asia Pacific Microscopy Congress　2025/02/05

  5. Local structure and electrostatic potential analysis of heterointerfaces using QCBED and 4D-STEM Invited

    Kenji TSUDA

    The Sagamore XX conference of the International Union of Crystallography (IUCr) Commission on Quantum Crystallography (QCr)　2024/11/12

  6. PMNリラクサーの局所構造における電場応答の解析

    古池佑紀, 森川大輔, 符徳勝, 伊藤満, 津田健治

    日本顕微鏡学会第67回シンポジウム　2024/11/02

  7. 深層学習によるチタン酸バリウムのナノドメイン積層構造解析

    渥見大成, 森川大輔, 津田健治

    日本顕微鏡学会第67回シンポジウム　2024/11/02

  8. Defocus CBED法とCBIM法によるpn接合界面の観察

    齋藤桃子, 森川大輔, 佐々木宏和, 津田健治

    日本顕微鏡学会第67回シンポジウム　2024/11/02

  9. 収束電子回折法によるGaN/AlGaNヘテロ接合界面の微細構造解析

    北上 偉武暉, 森川 大輔, 松岡 隆志, 津田 健治

    日本顕微鏡学会第67回シンポジウム　2024/11/02

  10. Chirality identification using qualitative Bijvoet difference by 3D ED analysis

    T. Liu, D. Morikawa, S. Narai, H. Kurokawa, Y. Seto, K. Tsuda, K. Yonekura

    The 67th Symposium of the Japanese Society of Microscopy　2024/11/02

  11. 低コストディンプルグラインダーの提案

    真柄 英之, 森川 大輔, 津田 健治

    日本顕微鏡学会第67回シンポジウム　2024/11/02

  12. Analysis of Crystal Structure and Phase Transition of Partially Cation Substituted SrFeO3-δ

    Takuya Hashimoto, Kosuke Shido, Keina Nagai, Taizo Yoshino, Chihiro Kato, Hikaru Murakami, Ginga Yamada, Ryutaro. Maehara, Shumpei Nimura, Daisuke Morikawa, Kenji Tsuda, Motoyuki Matsuo

    PRiME 2024　2024/10/06

  13. Crystal structure and chemical bonding studies using convergent-beam electron diffraction Invited

    B. Aryal, D. Morikawa, K. Tsuda, M. Terauchi, L. Bourgeois, P. N., H. Nakashima

    International Conference on Materials Science and Engineering (Materials Oceania 2023)　2024/09/27

  14. カチオン部分置換したSrFeO3-δの結晶構造と相転移挙動

    永井景奈, 山田銀我, 村上輝, 加藤千尋, 吉野太造, 呂昊宣, 前原龍太郎, 二村峻平, 志藤広典, 橋本拓也, 松尾基之, 森川大輔, 津田健治

    熱測定討論会　2024/09/26

  15. GHzパルス電子線を用いた弾性波励起の研究

    佐藤庸平, 津田健治, Spencer Reisbick, 森川大輔, 寺内正己, Yimei Zhu

    日本物理学会第79回年次大会　2024/09/16

  16. 収束電子回折図形を用いた積層ドメインの解析

    森川大輔, Liu Tianyu, 阿部伸行, 有馬孝尚, 津田健治

    日本物理学会第79回年次大会　2024/09/16

  17. 酸素量を制御したSrFeO3-δの電気伝導特性―構造相転移の影響

    吉野 太造, 杉本 隆之, 志藤 広典, 橋本 拓也, 松尾 基之, 森川 大輔, 津田 健治

    日本セラミックス協会第37回シンポジウム　2024/09/10

  18. Substitution site of trivalent ion in SrFeO3-δ and its effect on crystal structure and chemical state of Fe

    Takuya Hashimoto, Keina Nagai, Chihiro Kato, Hikaru Murakami, Ryutaro Maehara, Kosuke Shido, Daisuke Morikawa, Kenji Tsuda, Motoyuki Matsuo

    International Symposium on Industrial Application of Mossbauer Effect (ISIAME) 2024　2024/09/02

  19. Analysis of crystal structure of Sr0.8Ba0.2FeO3-δ by Mössbauer Spectroscopy

    Takuya Hashimoto, Taizo Yoshino, Ginga Yamada, Shumpei Nimura, Kosuke Shido, Daisuke Morikawa, Kenji Tsuda, Motoyuki Matsuo

    International Symposium on Industrial Application of Mossbauer Effect (ISIAME) 2024　2024/09/02

  20. Local structure analysis of polar domain boundary using convergent-beam electron diffraction Invited

    Daisuke Morikawa, Kenji Tsuda

    The 14th Japan-Korea Conference on Ferroelectricity (JKC-FE14)　2024/08/30

  21. Acoustic oscillations on piezoelectric materials excited by a GHz pulsed electron beam

    Yohei K. Sato, Kenji Tsuda, Spencer A. Reisbick, Daisuke Morikawa, Masami Terauchi, Yimei Zhu

    Microscopy and Microanalysis 2024　2024/07/30

  22. 4D-STEMによる局所構造解析の基礎と得られる情報 Invited

    津田健治

    ⽇本顕微鏡学会 ソフトマテリアル分科会 2024 年度第 1 回講演会 「ソフトマテリアル向けの最新の局所構造解析」　2024/07/25

  23. Local structure analysis of polar domain boundary and electric-field-response of polar nano domains in BaTiO3 Invited

    D. Morikawa, K. Tsuda

    The 16th Japan-China Symposium on Ferroelectric Materials and Their Applications　2024/07/21

  24. Local Structure Analysis at Polar and Anti-phase Boundary in Hexagonal YMnO3

    Daisuke Morikawa, Nobuyuki Abe, Taka-hisa Arima, Kenji Tsuda

    The 41st Meeting on Ferroelectric Materials and Their Applications (FMA41)　2024/06/12

  25. Structural study of crystal interfaces using 4D-STEM Invited

    Kenji TSUDA

    The 41st International Conference of the Microscopy Society of Thailand (MST41)　2024/06/06

  26. Physics of electron beam: electron diffraction Invited

    Kenji TSUDA

    The 80th Annual Meeting of the Japanese Society of Microscopy　2024/06/04

  27. Spatially-resolved cell parameter measurement for fine lamella texture within Tenkawa iridescent garnet

    Yohei Igami, Akira Miyake, Kenji Tsuda, Norimasa Shimobayashi

    JpGU2024　2024/05/30

  28. Analysis of crystal structure and phase transition of partially cation substituted SrFeO3-δ by X-ray diffraction, electron diffraction, thermal analyses, and Mössbauer spectroscopy

    2024/04/26

  29. 収束電子回折法によるpn接合界面の観察

    森川大輔, 齋藤桃子, 佐々木宏和, 津田健治

    日本物理学会2024年春季大会　2024/03/20

  30. NaNbO3系反強誘電体の高温相の結晶構造解析

    阿蘇星侑, 松尾拓紀, 野口祐二, 米田 安宏, 森川大輔, 津田 健治

    日本セラミックス協会2024年年会　2024/03/15

  31. カチオン部分置換によるSrFeO3-dの結晶構造および相転移挙動変化

    志藤広典, 吉野太造, 永井景奈, 加藤千尋, 村上輝, 山田銀我, 前原龍太郎, 二村峻平, 橋本拓也, 松尾基之, 森川 大輔, 津田 健治

    日本セラミックス協会2024年年会　2024/03/15

  32. Crystal structure and structural phase transition of Sr1-xBaxFeO3-δ

    2024/03/16

  33. Preparation of pseudo cubic phase by partial substitution of trivalent ion for Sr or Fe site in SrFeO3-δ

    2024/03/16

  34. Development of crystal structure analysis program based on the dynamical diffraction for 3D ED data

    K. Tsuda, D. Morikawa, T. Liu, S. Narai, H. Kurokawa, K. Yonekura

    2024/03/08

  35. 収束電子回折(CBED)法を用いた結晶点群・空間群と格子歪みの決定 Invited

    津田健治

    日本顕微鏡学会解析技術分科会 2024年新春電子顕微鏡解析技術フォーラム　2024/01/26

  36. 高酸化物イオン伝導体LaBi1.9Te0.1O4.05Clの発見と拡散メカニズムの解明

    矢口寛, 森川大輔, 齊藤高志, 津田健治, 八島正知

    第49回固体イオニクス討論会　2023/11/17

  37. 収束電子回折法によるpn接合界面の微細構造解析

    齋藤 桃子, 森川 大輔, 佐々木 宏和, 津田 健治

    日本顕微鏡学会第66回シンポジウム　2023/11/12

  38. 収束電子回折法によるマルテンサイト変態の局所構造解析

    佐藤 誉頼, 森川 大輔, 木村 雄太, 梅津 理恵, 津田 健治

    日本顕微鏡学会第66回シンポジウム　2023/11/12

  39. 収束電子回折法を用いた局所結晶構造解析の界面への応用

    森川大輔, 津田健治

    日本結晶学会令和5年(2023年)度年会　2023/10/29

  40. Local structure analysis using nano-electron probe Invited

    Kenji TSUDA

    The 2nd CrSJ Keynotes　2023/09/28

  41. Towards electrostatic potential analysis of interface structures using 4D-STEM Invited

    Kenji TSUDA

    The 20th International Microscopy Congress (IMC20)　2023/09/12

  42. カチオン部分置換によるSrFeO3-δの結晶構造・Feの化学状態の変化

    橋本 拓也, 吉野 太造, 志藤 広典, 藤代 史, 大石 昌嗣, 松尾 基之, 森川 大輔, 津田 健治

    2023電気化学秋季大会　2023/09/12

  43. Local structure analysis of crystal interfaces using quantitative 4D-STEM Invited

    Kenji TSUDA

    IMC20 satellite symposium　2023/09/07

  44. カチオン部分置換によるSrFeO3-δの結晶構造変化

    橋本 拓也, 吉野 太造, 志藤 広典, 藤代 史, 大石 昌嗣, 松尾 基之, 森川 大輔, 津田 健治

    日本セラミックス協会秋季シンポジウム　2023/09/06

  45. Toward quantitative analysis of 3D nanostructures using convergent-beam electron diffraction

    Kenji TSUDA

    The 26th Congress of the International Union of Crystallography (IUCr2023)　2023/08/27

  46. Nano-scale crystal structure analysis using convergent-beam electron diffraction Invited

    Kenji TSUDA, Daisuke Morikawa

    International Workshop on Advanced and In-situ Microscopies of Functional Nanomaterials and Devices (IAMNano2023)　2023/06/28

  47. 3D structure analysis based on dynamical diffraction using 4D-STEM Invited

    Kenji TSUDA

    The 79th Annual Meeting of The Japanese Society of Microscopy　2023/06/26

  48. Analysis of interface structures using convergent-beam electron diffraction Invited

    Kenji TSUDA

    The 40th International Conference of the Microscopy Society of Thailand (MST40)　2023/04/04

  49. Crystal structure and electron density analysis of interface region using convergent-beam electron diffraction

    Daisuke Morikawa, Kenji Tsuda

    The Physical Society of Japan 2023 Spring Meeting　2023/03/22

  50. Calculations of coherent CBED patterns from interface regions with nano-electron probe

    Kenji Tsuda, Daisuke Morikawa

    The Physical Society of Japan 2023 Spring Meeting　2023/03/22

  51. 高酸化物イオン伝導性酸塩化物の発見

    矢口寛, 森川大輔, 齊藤高志, 津田健治, 八島正知

    日本セラミックス協会2023年年会　2023/03/08

  52. Local crystal structure analysis using convergent-beam electron diffraction Invited

    Kenji TSUDA

    The 27th Australian Conference on Microscopy and Microanalysis (ACMM 27)　2023/01/30

  53. Nanometer-scale local crystal structure analysis using convergent-beam electron diffraction Invited

    Kenji TSUDA

    2022 Annual Joint Symposium Tohoku University and National Taipei University of Technology　2022/11/28

  54. 収束電子回折法による強誘電体ドメイン壁の微細構造解析

    森川大輔, 野口祐二, 津田健治

    令和4年度日本結晶学会年会　2022/11/26

  55. Sn ドープ BaTiO3圧電セラミックスの相共存における微細構造解析

    織田隼人, 森川大輔, 符徳勝, 津田健治

    日本物理学会2022年秋季大会　2022/09/14

  56. STEM-CBED法による PMN リラクサーの局所構造の研究

    日野康平, 森川大輔, 符徳勝, 伊藤満, 津田健治

    日本物理学会2022年秋季大会　2022/09/14

  57. 強誘電体ドメイン壁における収束電子回折図形の対称性変化と微細構造解析 II

    森川大輔, 野口祐二, 津田健治

    日本物理学会2022年秋季大会　2022/09/14

  58. Sn ドープ BaTiO3圧電セラミックスの相共存における微細構造解析

    織田隼人, 森川大輔, 符徳勝, 津田健治

    日本顕微鏡学会第78回学術講演会　2022/05/11

  59. STEM-CBED法による PMN リラクサーの局所構造の研究

    日野康平, 森川大輔, 符徳勝, 伊藤満, 津田健治

    日本顕微鏡学会第78回学術講演会　2022/05/11

  60. Study of local structural variations using convergent-beam electron diffraction Invited

    Kenji Tsuda

    The 39th International Conference of Microscopy Society of Thailand (MST39)　2022/03/30

  61. Symmetry changes of CBED patterns and microstructure analysis in ferroelectric domain wall

    Daisuke Morikawa, Yuji Noguchi, Kenji Tsuda

    The Physical Society of Japan Annual (77th) Meeting　2022/03/16

  62. Analysis of Ca atom position in（Ba,Ca)TiO_3_ using beam-rocking EDS

    Kenji Tsuda, Naru Azumi, Daisuke Morikawa, Masami Terauchi, Masahiro Ohtsuka, Shunsuke Muto, Desheng Fu, Mitsuru Itoh

    The Physical Society of Japan Annual (77th) Meeting　2022/03/15

  63. Charge-orbital ordering in A-site ordered NdBaMn2O6 perovskite

    Md Shafiqul Islam, Daisuke Morikawa, Shigeki Yamada, Kenji Tsuda, Masami Terauchi

    APS March Meeting 2022　2022/03/17

  64. Local crystal structure analysis of ferroelectric materials using convergent-beam electron diffraction Invited

    Kenji Tsuda

    The 60th Symposium on Basic Science of Ceramics　2022/01/08

  65. 収束電子回折法による静電ポテンシャル・電子密度分布解析 Invited

    津田健治

    第36回分析電子顕微鏡討論会　2021/12/09

  66. Charge density analysis of NdBaMn2O6 by combination of CBED and DFT calculations

    M. S. Islam, D. Morikawa, K. Tsuda, S. Yamada, M. Terauchi

    The Physical Society of Japan 2021 Autumn Meeting　2021/09/23

  67. In-situ observation of nano domain structure of BaTiO3 using CBED II

    Daisuke Morikawa, Kenji Tsuda

    The Physical Society of Japan 2021 Autumn Meeting　2021/09/23

  68. Toward structure analysis in depth direction using CBED II

    Kenji Tsuda, Daisuke Morikawa

    The Physical Society of Japan 2021 Autumn Meeting　2021/09/23

  69. 収束電子回折法による局所結晶構造解析 Invited

    津田健治

    日本表面真空学会 マイクロビームアナリシス技術部会 マイクロビームアナリシス研修セミナー　2021/04/22

  70. Local structure analysis using convergent-beam electron diffraction techniques Invited

    Kenji Tsuda

    2021/03/24

  71. Improvement of accuracy and precision in refinement of crystal structure factors using zone-axis incidence and tilted CBED patterns

    B. Aryal, D. Morikawa, K. Tsuda, M. Terauchi

    American Physical Society (APS) March Meeting 2021　2021/03/19

  72. Structure optimization of NdBaMn2O6 by combination of CBED and DFT calculations

    M. S. Islam, D. Morikawa, K. Tsuda, S. Yamada, M. Terauchi

    The Physical Society of Japan Annual (76th) Meeting　2021/03/13

  73. 収束電子回折法によるBaTiO3ナノドメインの電場印可その場観察

    森川大輔, 津田健治

    日本物理学会 第76回年次大会　2021/03/13

  74. Toward structure analysis in depth direction using convergent-beam electron diffraction

    2021/03/13

  75. Materials Analysis by using Electron Microscopes operated in IMRAM International-presentation Invited

    M.Terauchi, H.Jinnai, Y.K.Sato, D.Morikawa, K.Tsuda, Z.Akase

    2020 ONLINE JOINT SYMPOSIUM "Engineer a Better Tomorrow" TOHOKU UNIVERSITY and NATIONAL TAIPEI UNIVERSITY OF TECHNOLOGY　2020/11/30

  76. Nanometer-scale local crystal structure analysis using convergent-beam electron diffraction Invited

    Kenji Tsuda

    The 4th Symposium for The Core Research Cluster for Materials Science and the 3rd Symposium on International Joint Graduate Program in Materials Science　2020/11/18

  77. Application of machine learning for electrostatic potential analysis using CBED Invited

    Kenji Tsuda

    2020/11/13

  78. A Study on Occupation Sites in M6C Carbide in High Chromium Cast Iron Using Statistical Beam-Rocking TEM-EDS Analysis International-presentation International-coauthorship Invited

    S. Nusen, A. Wiengmoon, D. Morikawa, N. Azumi, T. Chairuangsri, K. Tsuda, M. Terauchi

    6th Forum of Center for Advanced Materials Research and International Collaboration (CAMRIC-FORUM6)　2020/10/01

  79. LACBED図形の動力学シミュレーションへの機械学習の応用

    津田健治, 森川大輔, 越川亜美, 大関真之

    日本物理学会 2020年第75回年次大会（紙上開催）　2020/09/09

  80. CaTiO3の界面誘起分極構造の観察

    森川大輔, 津田健治

    日本物理学会 2020年秋季大会　2020/09/09

  81. Improvement in the precision of refinement of the crystal structure factors using convergent-beam electron diffraction

    B. Aryal, D. Morikawa, K. Tsuda, M. Terauchi

    2020/09/09

  82. STEM-CBED法によるPMNリラクサーの局所構造解析

    津田健治, 森川大輔, 符徳勝, 伊藤満

    第３７回強誘電体会議（紙上開催）

  83. 収束電子回折法を用いた試料ダメージ層の定量評価 II

    上石正樹, 森川大輔, 佐藤香織, 津田健治, 寺内正己

    日本顕微鏡学会 第７６回学術講演会（紙上開催）

  84. CaTiO3ドメイン境界での中心対称性の破れの観察

    森川大輔, 津田健治

    日本顕微鏡学会 第７６回学術講演会（紙上開催）

  85. STEM-CBED法によるPMNリラクサーの局所構造解析

    津田健治, 森川大輔, 符徳勝, 伊藤満

    日本顕微鏡学会 第７６回学術講演会（紙上開催）

  86. Electron density analysis of Potassiun Tantalate (KTaO3) using convergent-beam electron diffraction

    Bikas Aryal, Daisuke Morikawa, Kenji Tsuda, Masami Terauchi

  87. 大角度度ロッキングCBED図形を用いた結晶構造因子決定精度の検証II

    森川大輔, 津田健治

    日本物理学会 2020年第75回年次大会（紙上開催）

  88. STEM-CBED法によるPb(Mg1/3Nb2/3)O3リラクサーの局所構造解析

    津田健治, 森川大輔, 符徳勝, 伊藤満

    日本物理学会 2020年第75回年次大会（紙上開催）

  89. From basics of electron diffraction to CBED Invited

    Kenji Tsuda

    2020/01/24

  90. Local structural study of perovskite-type ferroelectrics using STEM-CBED Invited

    TSUDA Kenji

    Workshop on the Structure Science for the Development of Ferroelectrics and Related Materials　2019/12/17

  91. 収束電子回折法による強誘電体および強誘電ドメイン壁の局所構造解析 Invited

    津田 健治

    強的秩序とその操作に関わる研究グループ 夏の学校　2019/09/17

  92. ピクセル型高速STEM検出器を用いたSTEM-CBED法による強誘電ドメイン壁の局所構造解析 II

    津田健治, 佐川隆亮, 橋口裕樹, 近藤行人

    日本物理学会2019年秋季大会　2019/09/12

  93. 大角度ロッキングCBED図形を用いた結晶構造因子決定精度の検証

    森川大輔, 津田 健治

    日本物理学会2019年秋季大会　2019/09/10

  94. ピクセル型高速STEM検出器を用いたSTEM-CBED法による局所構造解析 Invited

    津田健治, 佐川隆亮, 橋口裕樹, 近藤行人

    日本顕微鏡学会 第35回分析電子顕微鏡討論会　2019/09/03

  95. Local structural study of ferroelectric domain boundaries using STEM-CBED with a fast pixelated STEM detector International-presentation

    Kenji Tsuda, Ryusuke Sagawa, Hiroki Hashiguchi, Yukihito Kondo

    Microscopy and Microanalysis 2019　2019/08/07

  96. 収束電子回折法を用いた試料ダメージ層の定量評価

    上石正樹, 森川大輔, 佐藤 香織, 津田 健治, 寺内正己

    日本顕微鏡学会第75回学術講演会　2019/06/18

  97. 大角度ロッキングCBED図形を用いた軌道整列状態の静電ポテンシャル分布解析

    森川大輔, 津田 健治

    日本顕微鏡学会第75回学術講演会　2019/06/18

  98. ピクセル型STEM検出器を用いたSTEM-CBED法による強誘電体の局所構造解析

    津田健治, 佐川隆亮, 橋口裕樹, 近藤行人

    日本顕微鏡学会第75回学術講演会　2019/06/17

  99. ピクセル型高速STEM検出器を用いたSTEM-CBED法による強誘電ドメイン壁の局所構造解析

    津田健治, 佐川隆亮, 橋口裕樹, 近藤行人

    第36回強誘電体応用会議(FMA36)　2019/05/31

  100. Local crystal structure analysis using STEM-CBED method International-presentation Invited

    TSUDA Kenji

    The 36th International Conference of Microscopy Society of Thailand (MST36)　2019/03/28

  101. 大角度ロッキングCBED図形を用いた結晶構造因子精密化

    森川大輔, 津田健治

    日本物理学会 2019年第74回年次大会　2019/03/15

  102. ピクセル型高速STEM検出器を用いたSTEM-CBED法による強誘電ドメイン壁の局所構造解析

    津田健治, 佐川隆亮, 橋口裕樹, 近藤行人

    日本物理学会 2019年第74回年次大会　2019/03/14

  103. Nano-scale local structural study by convergent-beam electron diffraction Invited

    Kenji Tsuda

    Kanto branch seminar, The Japan Society of Vacuum and Surface Science　2018/11/10

  104. Local structure analysis using convergent-beam electron dfifraction Invited

    TSUDA Kenji

    The 61st Symposium of the Japanese Society of Microscopy　2018/11/02

  105. Nano-scale local structural study of BaTiO3 using STEM-CBED with a fast pixelated STEM detector International-presentation

    Kenji Tsuda, Michiyoshi Tanaka, Ryusuke Sagawa, Hiroki Hashiguchi, Yukihito Kondo

    The 19th International Microscopy Congress 2018 (IMC19)　2018/09/10

  106. Nano-scale local structural study of ferroelectrics using STEM-CBED with a fast pixeletated STEM detector International-presentation Invited

    Kenji Tsuda

    Workshop on STEM with Advanced Detectors　2018/09/07

  107. Local Electric Polarization of BaTiO3 Studied by X-ray Fluorescence Holography International-presentation

    S. Nishikawa, K. Hayashi, K. Kimura, T. Nishioka, N. Happo, E. Abe, K. Tsuda

    The 13th International Conference on Synchrotron Radiation Instrumentation (SRI 2018)　2018/06/11

  108. STEM-CBED study on the temperature dependence of the local structures of tetragonal BaTiO3 International-presentation

    TSUDA Kenji

    2018 ISAF-FMA-AMF-AMEC-PFM Joint Conference　2018/05/28

  109. Electron diffraction study of crystal structures of (Sr1-xBax)2Nb2O7

    Bikas Aryal, Kenji Tsuda, Masami Terauchi, Shinya Tsukada, Yukikuni Akishige

    73rd annual meeting of the Physical Society of Japan　2018/03/24

  110. ピクセル型高速STEM検出器を用いたSTEM-CBED法によるBaTiO3の局所構造解析

    津田健治, 田中通義, 佐川隆亮, 橋口裕樹, 近藤行人

    日本物理学会 2018年第73回年次大会　2018/03/23

  111. STEM-CBED 法による強誘電体の局所構造解析 Invited

    Kenji Tsuda

    NIMS微細構造解析PF地域セミナー、4D-STEMセミナー～新たなSTEM像観察を実現する最新検出、解析手法の最前線～　2017/11/20

  112. Nanoscale local structural study of ferroelectric materials using convergent-beam electron diffraction International-presentation Invited

    Kenji Tsuda

    International Conference on Materials and Systems for Sustainability 2017 (ICMaSS2017)　2017/09/29

  113. 収束電子回折法によるペロブスカイト型強誘電体のナノ局所構造解析 Invited

    Kenji Tsuda

    日本セラミックス協会第30回秋季シンポジウム　2017/09/19

  114. 収束電子回折による局所構造・静電ポテンシャル分布解析 Invited

    Kenji Tsuda

    第33回分析電子顕微鏡討論会　2017/09/05

  115. Nanoscale local structural study of phase transformations in perovskite-type ferroelectrics using convergent-beam electron diffraction International-presentation Invited

    Kenji Tsuda

    The International union of materials research society-International conference of advanced materials (IUMRS-ICAM2017)　2017/08/30

  116. 収束電子回折法によるBaTiO3の構造相転移と局所構造の解析 Invited

    津田 健治

    環境調和セラミック材料研究会 名エ大一中部産総研共同研究セミナー講演会　2017/03/07

  117. STEM-CBED法による強誘電体のナノスケール局所構造揺らぎの解析 Invited

    Kenji Tsuda

    日本顕微鏡学会第59回日本顕微鏡学会シンポジウム　2016/11/18

  118. STEM-CBED法による強誘電体GeTeの局所構造解析

    Kenji Tsuda, Michiyoshi Tanaka

    日本物理学会 2016年秋季大会　2016/09/13

  119. STEM-CBED法によるBaTiO3常誘電立方晶相の局所構造の対称性破れの直接観察

    日本顕微鏡学会第72回学術講演会　2016/06/14

  120. STEM-CBED法によるBaTiO3立方晶相の局所構造の研究 II

    Kenji Tsuda, Michiyoshi Tanaka

    日本物理学会 第71回年次大会　2016/03/19

Show all Show first 5

Research Projects 22

  1. Innovation of drug discovery through visualization of structures beyond atomic coordinates

    Kenji TSUDA, Yohei SATO, Daisuke MORIKAWA, Liu Tianyu

    Offer Organization: Japan Science and Technology Agency (JST)

    System: JST-MIRAI program

    Category: "Common Platform Technology, Facilities, and Equipment" mission area: Full-scale R&D Project

    Institution: Tohoku University

    2023/04 - 2028/03

  2. Study of local crystal structures and microscopic mechanism of Martensitic phase transformations using electron nano-probe

    Offer Organization: Japan Society for the Promotion of Science

    System: Grants-in-Aid for Scientific Research Grant-in-Aid for Scientific Research (B)

    Category: Grant-in-Aid for Scientific Research (B)

    Institution: Tohoku University

    2022/04/01 - 2025/03/31

  3. Local crystal structure analysis of dopant atoms of carbides in high chromium irons using electron multi-probes

    Kenji TSUDA

    Offer Organization: Japan Society for the Promotion of Science

    System: Grants-in-Aid for Scientific Research

    Category: Grant-in-Aid for Challenging Research (Exploratory)

    Institution: Tohoku University

    2023/06 - 2025/03

  4. Development of a 3d local crystal structure analysis method using electron nano-probe and its application to relaxors

    Tsuda Kenji

    Offer Organization: Japan Society for the Promotion of Science

    System: Grants-in-Aid for Scientific Research Grant-in-Aid for Scientific Research (A)

    Category: Grant-in-Aid for Scientific Research (A)

    Institution: Tohoku University

    2018/04/01 - 2021/03/31

    More details Close

    In order to develop a 3-dimensional local structure analysis method using an electron nano-probe, a new system was developed to map energy-filtered convergent-beam electron diffraction (CBED) data with a high speed and a high angular resolution. Deep neural network was successfully applied for accelerating dynamical diffraction intensity calculations of large-angle CBED (LACBED) patterns. For obtaining structural information in depth-direction, the scattering matrix method was implemented in our dynamical diffraction simulation code MBFIT for describing distribution of local structures in the electron beam direction. This newly developed analysis method was applied to local crystal structure analysis of a ferroelectric twin boundary in CaTiO3, visualization of ferroaxial domains in NiTiO3, electrostatic potential and electron density analysis of quantum paraelectric phase of KTaO3, local structure analysis of relaxor-like nano-domains in BaTiO3 under applying electric field.

  5. Site-selective analysis of local structure and electronic states of ferroelectrics using electron spectroscopic multi-probes

    Tsuda Kenji

    Offer Organization: Japan Society for the Promotion of Science

    System: Grants-in-Aid for Scientific Research Challenging Research (Exploratory)

    Category: Challenging Research (Exploratory)

    Institution: Tohoku University

    2018/06/29 - 2020/03/31

    More details Close

    Electron incoherent channeling techniques based on the combined use of electron spectroscopy and electron channeling effect, have been applied to local structure analysis of dopant atom sites in BaTiO3 ferroelectrics. Off-centering of dopant Ca atoms at Ba sites was revealed from characteristic X-ray incoherent channeling patterns obtained from a single ferroelectric domain area for the first time.

  6. Local structure analysis and polarization mapping of polarization nano domains of ferroelectrics using STEM-CBED

    Tsuda Kenji, TERAUCHI Masami, NISHIMATSU Takeshi

    Offer Organization: Japan Society for the Promotion of Science

    System: Grants-in-Aid for Scientific Research Grant-in-Aid for Scientific Research (B)

    Category: Grant-in-Aid for Scientific Research (B)

    Institution: Tohoku University

    2013/04/01 - 2016/03/31

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    A new method has been developed for investigating two-dimensional distributions of nanometer-scale local structures, with the combined use of scanning transmission electron microscopy and convergent-beam electron diffraction (STEM-CBED). The STEM-CBED system was constructed on an energy-filter transmission electron microscopy JEM-2010FEF. The method was applied to perovskite-type ferroelectrics such as barium titanate (BaTiO3), nanometer scale local structures were investigated below and above their ferroelectric phase transitions. Nanometer-scale fluctuations of polarization clusters were successfully observed

  7. Structure analysis of ferroelectric domain walls using coherent convergent-beam electron diffraction

    TSUDA Kenji, TERAUCHI Masami, NISHIMATSU Takeshi

    Offer Organization: Japan Society for the Promotion of Science

    System: Grants-in-Aid for Scientific Research Grant-in-Aid for Challenging Exploratory Research

    Category: Grant-in-Aid for Challenging Exploratory Research

    Institution: Tohoku University

    2013/04/01 - 2015/03/31

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    We have attempted to develop a method using the coherent CBED technique, which observes interference fringes appearing in overlapping areas of adjacent CBED disks. We performed coherent CBED experiments to observe ferroelectric domain boundaries of hexagonal YMnO3, using a TEM equipped with a cold-type field emission electron gun, a spherical aberration corrector and an Omega-type energy-filter. Phase differences due to the structure of the domain boundary have been first observed in the interference fringes. A software to simulate coherent CBED patterns at domain boundaries has been developed on the basis of the multiple scattering (dynamical diffraction) theory. Applications of the CBED method to phase transition materials were also conducted.

  8. Electron-beam analyses of crystal- and electronic-structures

    TERAUCHI Masami, TSUDA Kenji, OGATA Yoichiro, SATO Yohei

    Offer Organization: Japan Society for the Promotion of Science

    System: Grants-in-Aid for Scientific Research Grant-in-Aid for Scientific Research on Priority Areas

    Category: Grant-in-Aid for Scientific Research on Priority Areas

    Institution: Tohoku University

    2007 - 2011

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    Base on transmission electron microscopy technique, high-quality specimen areas were examined by using CBED, EELS and SXES methods. Characteristic electronic states of boron nano-belt, zeolite-templated carbon, polymerized C_<60>, Li-doped α-rhombohedral boron and MgB_4 were revealed. Improvements of anisotropic valence charge density analyses by CBED and SXES, and optical properties of nano-partucles by EELS were also done.

  9. Electrostatic potential analysis of ferroelectric domains using convergent-beam electron diffraction

    TSUDA Kenji, TERAUCHI Masami

    Offer Organization: Japan Society for the Promotion of Science

    System: Grants-in-Aid for Scientific Research Grant-in-Aid for Scientific Research (B)

    Category: Grant-in-Aid for Scientific Research (B)

    Institution: Tohoku University

    2008 - 2010

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    An electrostatic potential analysis method using convergent-beam electron diffraction has been successfully developed, which enables us to determine electrostatic potential distribution from a nanometer-scale specimen area. Using this method, ferroelectric polarizations of ferroelectric materials such as LiNbO3 were observed through electrostatic potential. The method was also applied to visualization of orbital ordered states of 3d electrons in strongly-correlated electron systems.

  10. Development of a nanoscale point-defect analysis method using convergent-beam electron diffraction and its application to point-defect-induced properties

    TSUDA Kenji, TERAUCHI Masami

    Offer Organization: Japan Society for the Promotion of Science

    System: Grants-in-Aid for Scientific Research Grant-in-Aid for Scientific Research (C)

    Category: Grant-in-Aid for Scientific Research (C)

    Institution: Tohoku University

    2005 - 2006

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    The present research project aimed to develop a method to quantitatively analyze the atomic structure and distribution of point defects and the local lattice strain of their surrounding areas in a nanometer-scale spatial resolution. Impurity-doped Si was used as a test specimen containing point defects, in which anomalous intensity increase was found in rocking curves of low-order reflections of convergent-beam electron diffraction (CBED) patterns. In order to clarify the relationship between the anomalous intensity and the strain due to point defects, the intensities of the anomalous rocking curves were measured from specimens with various doping amounts using an energy-filter transmission electron microscope. The specimen preparation method not to cause the anomalous intensity was established. It was also found that the anomalous intensity increase can be caused by not only doped impurity atoms but also the atoms and small clusters induced by ion implantation. Simulation programs for the rocking curves was developed based on the statistical-dynamical diffraction theory, the multi-slice method and the Howie-Whelan's method. Simulations of rocking curves were performed using various strain distribution models and were compared with the experimental data. As a result, we have demonstrated that the anomalous CBED rocking curves can be explained by a strain-relaxation model with lattice bending. This implies that the CBED rocking curves of the low-order reflections can be successfully used for the determination of local strain distributions with a nanometer-scale spatial resolution. Local lattice strains of semiconductor devices have been so far examined using higher-order Laue zone (HOLZ) line patterns of CBED. The present method enables us to analyze such highly strained areas as HOLZ lines are blurred or unclear, to which the HOLZ line method cannot be applied.

  11. DF004法によるデバイス中ドープ元素の定量解析法の開発

    寺内 正己, 津田 健治

    Offer Organization: 日本学術振興会

    System: 科学研究費助成事業 萌芽研究

    Category: 萌芽研究

    Institution: 東北大学

    2003 - 2004

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    1.Pドープをおこなった試料にDF004法を適用してドープ領域の電子顕微鏡観察をおこなった。その結果、Asドープ試料の像強度の分布が、SIMSで測定したドープP元素の分布と極めてよく一致することが分かった。さらに、表面から同じ深さでも場所により像強度が異なることから、2次元的なドープ濃度の不均を可視化することも可能であることが明らかになった。 2.ASドープ濃度を1桁小さくした試料(最高濃度領域で0.1at.%)からFIBで作製した電子顕微鏡用試料の測定をおこなって像強度とSIMSデータを比較したところ、像強度がドープ濃度に比例して小さくならない現象が明らかになった。この事実は、ドープ元素以外に試料結晶の不完全性を生じさせる原因があることを示している。従来の重元素を保護膜に用いたFIB加工、軽元素を保護膜に用いたFIB加工、機械研磨+イオンミリングの試料作成法を用い、ドープ試料、ノンドープ試料の実験試料を作製してDF004の実験を行った。その結果、重元素を保護膜に用いたFIB加工では、保護膜をつける過程で試料にダメージが入り、その結果としてDF004の電子顕微鏡像にコントラストを生じることが分かった。したがって、FIB加工して試料作製する場合は、保護膜として軽元素を用いる必要があることが明らかとなった。 3.結晶の乱れを考慮したX線用の統計動力学理論を電子線に適応することで、実験で観測されているロッキングカーブの変化(強度増大と非対称性)が再現できることが分かった。しかし、乱れの小さい低濃度ドープ領域には適用できるものの、ドープ濃度が1at.%になると実験を再現できないことも明らかになった。

  12. Development of high energy-resolution soft-X-ray emission spectroscopy microscope

    TERAUCHI Masami, SAITOH Koh, TSUDA Kenji

    Offer Organization: Japan Society for the Promotion of Science

    System: Grants-in-Aid for Scientific Research Grant-in-Aid for Scientific Research (B)

    Category: Grant-in-Aid for Scientific Research (B)

    Institution: Tohoku University

    2001 - 2003

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    A new grating for a grazing incidence flat-field spectrograph was designed from 400eV to 1200eV with a groove density of 2400 lines/mm. The grating has a two times larger energy dispersion than that of a commercial grating. A new spectrometer chamber was designed to used not only for the new grating but also for commercial gratings. As energy region of 60-1200 eV is accessible by using the new and commercial gratings. X-ray reflection mirrors were designed to improve X-ray intensity to go into the grating. The mirrors have elliptical curvatures. The material for the mirrors was tungsten of about 100 nm thickness, which was formed on a cleaved natural mica crystal. The length and the width of the mirror were 135 mm and about 10 mm, respectively. Two mirrors were put between the grating and the specimen. Spectral intensity was improved by four times compared with those obtained without the mirror. The effective collection angle 2.8x10^<-3>sr. The developed soft-X-ray spectrometer attached to a transmission electron microscope (TEM) of JEM-2000FX. Energy dispersions per CCD detector channel (13.5 μm) of this spectrometer are about 0.1eV for Si L-emission (〜100eV), 0.2eV for B K-emission (〜180eV) and 0.7eV for Cu L-emission (〜930 eV). Cu L-emission spectra were obtained with a probe current of 10 nA at an acquisition time of 20 min. A VLS grating with line density of 24001/mm was used. The spectra clearly showed four L-emission peaks of L_α(M_y(3d)→L_<III>(2p)), L_β(M_<IV>(3d)→L_<II>(2p)), L_1(M_I(3s)→L_<III>(2p)) and Lη(M_I(3s)→L_<II>(2p)). The density of states of boron nano-belts and bundles of carbon nanotubes were obtained by using the X-ray emission spectroscopy microscope.

  13. Development of nm-scale soft-X-ray spectroscopy electron microscope and its application to BN materials

    TERAUCHI Masami, SAITOH Koh, TSUDA Kenji

    Offer Organization: Japan Society for the Promotion of Science

    System: Grants-in-Aid for Scientific Research Grant-in-Aid for Scientific Research (B)

    Category: Grant-in-Aid for Scientific Research (B)

    Institution: Tohoku University

    2000 - 2002

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    We have developed a high energy-resolution soft-X-ray spectrometer for a transmission electron microscope to obtain the information of the density of states(DOS)of the valence band (occupied states) from identified small specimen areas The spectrometer was composed of varied-line-spacing(VLS)gratings and a CCD detector. An energy range from 60eV to 1200eV was accessible by using two VLS gratings, which have line densities of 1200 and 2400 lines/mm. the size of the CCD detector was 27.6x27.6mm2,which corresponds to a collection angle of 6.5x10.^<-4>sr. By introducing X-ray reflection flat mirrors, spectral intensity was improved by 2.2 times. Thus, the effective collection angle of the spectrometer was 1.4x10.^<-3>sr. Energy resolutions of this spectrometer for Si L-emission(〜100eV),B K-emission(〜180eV)and Cu L-emission(〜930eV)were evaluated to be 0.1,0.4 and 1.4eV, respectively.This spectrometer successfully obtained the DOS of the valence band from specified amall specimen areas of h,c,w-BN,α, βboron, Si, carbon allotropes and quasicrystals We have been designing a new VLS grating to improve the energy resolution with a help of another Grant-in-Aid for Scientific research(B). The new spectrometer will give us an energy resolution of about 0.7eV at 1000eV

  14. 収束電子回折法による電荷・軌道秩序状態の観察

    津田 健治

    Offer Organization: 日本学術振興会

    System: 科学研究費助成事業 奨励研究(A)

    Category: 奨励研究(A)

    Institution: 東北大学

    2000 - 2001

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    1.収束電子回折法による電子密度分布解析法について、継続して改良を加えた。これまでわれわれが独自に開発してきた解析ソフトウェア(MBFIT)に、より自由な束縛条件を導入できるようにソースコードの変更を追加した。 2.LaCrO_3の菱面体晶相について、われわれが開発してきた収束電子回折法による電子密度分布解析を適用した。前年度すでに[11-1]方向からの投影電子密度分布を得ているが、今年度は複数の入射データを複合的に解析を行うことで3次元的な変形電子密度分布を得ることに成功した。Cr原子からO原子への明瞭な電荷移動が確認された。 3.前年度から引き続いてLaMnO_3の軌道秩序相の電子密度分布解析を行った。この相では、Mn^<3+>の3d電子のうちe_g(3z^2-r^2)軌道に属する電子がMnまわりの酸素八面体のヤーンテラー歪みを伴って秩序配列することが、共鳴X線散乱等により報告されている。収束電子回折強度データを用いて価電子分布に特に敏感な低散乱角領域(sinθ/λ<0.3)の反射の結晶構造因子を精密化し、原子の球状電子密度分布を仮定した計算値から大きく値がずれる反射を見出した。この結果から変形電子密度分布を得て、Mn原子の3d電子の軌道秩序に直接対応する異方的な電子密度を観察することに世界で初めて成功した。

  15. 高分解能電子エネルギー損失分光法によるBNチューブの電子構造の研究

    寺内 正己, 津田 健治

    Offer Organization: 日本学術振興会

    System: 科学研究費助成事業 特定領域研究(A)

    Category: 特定領域研究(A)

    Institution: 東北大学

    1999 - 2000

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    1.昨年度、新たに見出したBNコーンの先端部分と底の部分から高分解能EELS測定に成功し、バルクのBNよりもコーンの底の部分ではバンドギャップエネルギーが小さくなっているが、先端部ではさらに小さくなっていることが実験的に明らかにした。この現象は、これまでのBNナノチューブの実験結果"径の小さなBNナノチューブほどバンドギャップエネルギーが小さい"と同じであると解釈できることがわかった。 2.1.のBNコーンとBNナノチューブのバンドギャップエネルギーに関する特徴は"BNシートでは、バンドギャップはブリルアンゾーン境界にあり、そこでは価電子帯はN原子の電子軌道のみからできており伝導帯はB原子の電子軌道からのみできている"というBNシート特有の電子状態の結果として解釈できることが明らかになり、カーボンシートからできているカーボンナノチューブやカーボンコーンには期待できないことが明らかになった。 3.BNシートの端が露出しているBNコーンの底部分では、伝導帯に特徴的な状態密度分布が存在することが実験的に明らかになった。DV-Xα法を用いたBNシートの電子状態計算から、特徴的な状態密度が、BNシート端に局在するエッジ状態に起因することが明らかになった。 4.半導体であるボロンの超伝導化として期待されているLiドープαボロンは大きな単結晶が得られていない。われわれの開発してきた高分解能EELS電子顕微鏡を用いることで、初めてLiドープαボロン単結晶の高分解能EELS測定に成功し、フェルミ面の存在を明らかにした。すなわち、Liドープによりα-ボロンが金属化していることを実験的に明らかにした。

  16. STRUCTURE ANALYSIS OF DECAGONAL QUASICRYSTALS USING THE HIGH-ANGLE ANNULER DARK-FIELD SCANNING TRANSMISSION ELECTRON MICROSCOPE METHOD.

    TANAKA Michiyoshi, SAITOH Koh, TSUDA Kenji, TERAUCHI Masami

    Offer Organization: Japan Society for the Promotion of Science

    System: Grants-in-Aid for Scientific Research Grant-in-Aid for Scientific Research (A).

    Category: Grant-in-Aid for Scientific Research (A).

    Institution: Tohoku University

    1999 - 2000

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    ○Al_<72>Ni_<20>Co_8, Al_<73>Ni_<22>Fe_5 decagonal quasicrystals We, using the HAADF method, revealed that the atom cluster of an Al_<72>Ni_<20>Co_8 decagonal quasicrystal, which had been believed to be of tenfold rotation symmetry, is not of tenfold but of mirror symmetry for the first time, Furthermore, we found that Al_<72>Ni_<20>Co_8 is composed of basic atom clusters, which exist in a basic quasicrystalline approximant of monoclinic Al_<13>Fe_4. On the basis of the approximant structure, a new structural model of Al_<72>Ni_<20>Co_8 was constructed. It was also found using the HAADF method that an Al_<73>Ni_<22>Fe_5 decagonal quasicrystal has a similar structure to that of Al_<72>Ni_<20>Co_8. ○Al-Ni-Fe non-centrosymmetric decagonal quasicrystal We previously found, by conventional high-resolution electron microscopy, that an Al_<70>Ni_<15>Fe_<15> quasicrystal is formed by an atom cluster with fivefold rotation symmetry. We applied the HAADF method to the quasicrystal for the first time, and verified that the atom cluster is truly of fivefold symmetry. Furthermore, a structural model was constructed on the basis of the HAADF image and an approximant structure. The direct observation of an antiphase shift at an inversion domain boundary, which had not been carried out, was successfully performed by the HAADF method. ○Al-Fe and Al-Co crystalline approximants From the HAADF observations of an Al_<13>Fe_4 crystalline approximant, whose structure was already solved, it was confirmed that the HAADF images exhibit transition-metal-atom positions selectively. We found that HAADF images of a O^2-inflated Al_<13>Co_4 approximant show a similar image of the 2nm-diameter atom-clusters of decagonal quasicrystals. On the basis of the HAADF images and the structure of Al_<13>Fe_4, a structural model of O^2-inflated Al_<13>Co_4 approximant was constructed. Furthermore, by the comparison between the decagonal quasicrystal and its approximant structures, a formation model of decagonal quasicrystals from the O^2-inflated Al_<13>Co_4 was proposed.

  17. 収束電子回折法によるペロブスカイト型酸化物の局所構造解析

    津田 健治

    Offer Organization: 日本学術振興会

    System: 科学研究費助成事業 奨励研究(A)

    Category: 奨励研究(A)

    Institution: 東北大学

    1998 - 1999

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    収束電子回折法を用いて、超巨大磁気抵抗効果を示すペロブスカイト型Mn酸化物La_<1-X>Sr_XMnO_3系を調べた。前年度のx=0.12の試料に加え、本年度はxを系統的に変化させて局所構造を調べ、物性との関連について調べた。その結果、x=0.11以上の領域ではx=0.12と同じくorthorhombicの室温以上の相、monoclinicの中間相、triclinicの2x4x4倍の超格子構造を伴う低温相という複雑な相転移を起こすことがわかった。また、中間相では数nm程度の構造揺らぎが存在することを見出した。さらに、x=0.10以下の領域では約340K以上の高温相からそれ以下での室温相への相転移のみが見られ、x=0.11以上とは異なる振る舞いを示した。この室温相ではx=0.11以上と同様の数nmオーダーの構造揺らぎが存在することも初めて見出した。共鳴X線散乱の実験から、x=0.11以上の試料では低温相でのみ軌道秩序が存在し、x=0.10以下では室温相で軌道秩序が存在することが報告されており、今後この軌道秩序とnmオーダーの構造揺らぎとの関係についてより詳細に調べることはきわめて興味深い。 燃料電池のインターコネクタ材料であるペロブスカイト型酸化物LaCrO_3の局所構造解析を行った。エネルギーフィルター電子顕微鏡JEM-2010FEFを用いて数nm程度の局所領域から撮影した収束電子回折図形を、動力学回折理論による計算強度と非線型最小二乗法を用いてフィッティングすることにより、原子位置および異方性温度因子、さらには低次結晶構造因子を精密化することに成功した。熱振動の異方的る振る舞いおよび電荷移動による結晶ポテンシャルの微小な変化を明瞭にとらえることができた。 α'-NaV_2O_5の構造相転移を収束電子回折法で調べ、室温における対称性がPmmnであり、この物質の構造相転移がスピン・パイエルス転移ではないことを決定付けた。さらに、相転移温度直上で現れる散漫散乱、相転移点以下でのきわめて弱い超格子反射、室温付近からあらわれるきわめて弱い散漫散乱を電子回折でとらえることに初めて成功し、この物資の相転移機構について新たな知見を与えた。

  18. Symmetry Determination of Single and Double Crystals by CBED

    TANAKA Michiyoshi, GOODMAN Peter, SAIYOH Koh, TSUDA Kenji, TERAUCHI Masami

    Offer Organization: Japan Society for the Promotion of Science

    System: Grants-in-Aid for Scientific Research Grant-in-Aid for international Scientific Research

    Category: Grant-in-Aid for international Scientific Research

    Institution: Research Institute for Scientific Measurements, Tohoku University

    1998 - 1998

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    It has been established that convergent-beam electron diffraction (CBED) is quite an effective method for determining crystal point groups and space groups. CBED allows the unique identification of all the 32 point groups and 200 space groups among 230 space groups. However, the other 30 space groups have still remained to be indistinguishable. In the present research, we have newly applied the coherent CBED method to distinguish the remaining space groups. The coherent CBED technique observes interference fringes appearing in the overlapping regions of CBED disks using an high coherency electron source (i.e., field-emission gun), and directly provides phase information of crystal structures. We have applied the method to two pairs of space groups (I23, I2_13) and (I222, I2_12_12_1), which belong to indistinguishable sets because of their same kinematical extinction and no dynamical extinction. We have first discovered that the coherent CBED method can elucidate site symmetries of crystals with respect to the electron prove position. We have successfully proved that coherent CBED can distinguish the space groups of (I23, I2_13) and (I222, I2_12_12_1) through investigating their site symmetries in their unit cells. The present research was carried out in close cooperation with Dr.P.Goodman (University of Melbourne, Australia) and Dr.C.J.Rossouw (CSIRO, Australia).

  19. Development of a nm-scale crystal structure refinement method

    TANAKA Michiyoshi, SAITOH Koh, TSUDA Kenji, TERAUCHI Masami

    Offer Organization: Japan Society for the Promotion of Science

    System: Grants-in-Aid for Scientific Research Grant-in-Aid for Specially Promoted Research

    Category: Grant-in-Aid for Specially Promoted Research

    Institution: RESEARCH INSTITUTE FOR SCIENTIFIC MEASUREMENTS,TOHOKU UNIVERSITY

    1994 - 1997

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    In materials science at the present time, how to control nm-scale structures of materials is the most important research theme. Crystal structure analysis in nm-scale is indispensable to solve the question. The aim of the present research is to develop an accurate crystalstructure refinement method for nm-diameter specimen areas using convergent-beam electron diffraction (CBED), and to apply using method to the determination of detailed structures of real quasicrystals. To rearize the method, a new electron microscope equipped with a field-emission gun, an omega type filter to remove inelastically scattered electrons, an imaging plate and a CCD electron detection system was developed. This microscope took an epoch-making step forward to allow remote computer control and simultaneous observation of electron microscope images at different places using an internet system. We developed a structure refinement software based fully upon the dynamical theory of electron diffraction, which makes possible two dimensional fitting of CBED patterns. We performed a structure refinement of a noncentrosymmetric material CdS.We determined the positional parameter of sulfur u to be 0.378 and two Debye-Waller factors of cadmium and sulfur B(Cd) and B(S) respectively to be 1.35 and 1.14. These values well agree with X-ray values of u=0.3771, B(Cd)=1.4 and B(S)=1.1. The success of the structure refinement of Cd S proved that the accurate structure refinement by CBED is practically useful for materials science. We discovered new structural features of decagonal quasicrystals which correct the results already accepted. That is, the 2nm-cluster, which was considered to be a basic unit of the decagonal quasicrystal, can be decomposed into two smaller clusters of about a 0.4nm diameter. These two clasters are very similar to those existing in the approximant crystal. This provided the guiding principle that the quasicrystal can be considered on the basis of the crystal structure of the approximant. We are in the course of structure analysis by applying the high-dimensional crystallography.

  20. 透過型高分解能エネルギー損失分光による高温超伝導体の電子構造の研究

    田中 通義, 津田 健治, 寺内 正己

    Offer Organization: 日本学術振興会

    System: 科学研究費助成事業 重点領域研究

    Category: 重点領域研究

    Institution: 東北大学

    1993 - 1994

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    透過型電子エネルギー損失分光(EELS)による高温超伝導体の電子構造の研究はドイツのカールスルーエ大学のFinkらによってなされてきた。かれらは、EELSスペクトルの1.2eV付近にフリーキァリアーに由来するプラズモンピークが現れ、フリーキャリアーの有効質量はm^*/m〜1であると報告している。しかし、この有効質量の値は角度分解型光電子分光から求められた値5〜10と比べてかなり小さく疑問である。また、光の反射率の実験では、約1eVに反射率の低下が観察されており、プラズマエッジと同定されている。しかし、プラズマエッジのエネルギーがキャリアーのドーピング量に依存しないという実験結果については疑問がのこる。われわれは、1eV付近のプラズモンの存在の有無とその原因について、微小領域の同定機能を備えた透過型EELS装置を用いてBi系2201相,2212相,2223相およびTl系2201相の常伝導状態でのEELSスペクトルを調べた。 われわれの実験では、1eV付近にプラズモンの励起に対応するピークは観察されなかった。さらに、Bi-2212相についてまず電子回折図形で単結晶であることを確認した400nmφの領域から酸素1s電子の励起スペクトルをとり、528〜529eVにO2pホールの存在を確認した。同じ単結晶領域の100nmφの領域から得た0〜10eVのEELSスペクトルでは約1.2eVでプラズモンに対応するピークは全く見られなかった。Bi-2212相のキャリアーの密度は〜3×10^<21>cm^<-3>と報告されている。この密度に対応する自由電子近似でのプラズモンエネルギーは約2eVとなる。実際の結晶でのフリーキャリアーによるプラズモンエネルギーはキャリアーの有効質量の(m^*/m)^<-1/2>に比例し、誘電率のε_1^<-1/2>に比例する。キャリアーのm^*/mの値は角度分解型光電子分光から5〜10という値が報告されている。この値とキャリアー密度を用いてプラズモンエネルギーを計算すると0.6〜0.9eVとなる。Finkの得たε_1〜4.5を用いて誘電率の影響を考慮するとさらに低エネルギー0.3〜0.4eVへシフトし、1eV付近にプラズモンピークは観察されないことが予想される。われわれのEELSスペクトルから0.6〜0.9eV領域での誘電率を求めるとε_1〜9という値を得た。この誘電率を考慮すると、プラズモンエネルギーは0.2〜0.3eVとなり、今回の実験でプラズモンピークは観察されないことが理解できる。また、光の反射率の低下の原因は、約2eVにあるバンド間遷移であろうと考えられる。

  21. コヒーレント収束電子回折による結晶構造因子の位相決定法の開発

    田中 通義, 細川 史生, 津田 健治, 寺内 正巳

    Offer Organization: 日本学術振興会

    System: 科学研究費助成事業 試験研究(B)

    Category: 試験研究(B)

    Institution: 東北大学

    1993 - 1994

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    イメージングプレート用カメラを試作し、そのテストを行った。動作は良好である。イメージングプレートはフィルムに比べて高感度なので露出時間が短くて済み、電気的、機械的ドリフトの影響を小さくすることができた。またコンピューターにディジタル画像として回折図形をとりこむことができるので、画像処理が容易に行えるようになり、必要な情報を有効に取り出すことができるようになった。コヒーレントビームによる予備的干渉実験を行った。鏡映面、映進面の対称性を干渉縞として検出することに成功した。すなわち、鏡映面のないSr_2Nb_2O_7では干渉縞は非対称に現れ、鏡映面のあるSr_2Ta_2O_7では干渉縞が対称に現れることを確認した。映進面のあるFeS_2では運動学的に消滅する反射内に反位相ずれた縞を観察することに成功した。どのくらい小さな面間隔からの干渉縞を得ることができるかが今度の応用のために大きな課題である。われわれは現在、世界最高の2.7A干渉縞の観察に成功した。また1次元的な干渉縞ばかりでなく2次元的な干渉縞を得ることにも成功した。さらに、回折の動力学的理論に基づくシュミレーションによって干渉縞の再現と動力学的効果の検出に成功した。これらの成果は 1)Journal Electron Microscopyと2)Ultramicroscopyに投稿した。1994年7月パリで開催される国際電子顕微鏡学会で成果を報告するため講演を申し込んだ。日本電子顕微鏡学会誌から"コヒーレント収束電子回折法"の執筆を依頼された。

  22. 収束電子回折法によるデカゴナル相準結晶の構造の研究

    津田 健治

    Offer Organization: 日本学術振興会

    System: 科学研究費助成事業 奨励研究(A)

    Category: 奨励研究(A)

    Institution: 東北大学

    1993 - 1993

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    今年度の研究成果は次の通りである。 1.液体急冷法により作成したAl-Cu-Co系およびAl-Co系デカゴナル相準結晶が中心対称を持たない準結晶であることを、今回新たに見いだした。これは以前われわれの見いだしたAl-Ni-Fe系準結晶に続いて2列目であり、特にAl-Co系準結晶は2元合金として初めての非中心対称準結晶である。CuとCoの組成を変えて調べた結果この相が広い範囲で存在することを見いだし、収束電子回折法を用いて超空間郡を決定した。また、高分解能電子顕微鏡法による観察からこの系では2種類の異なる原子クラスターが存在すること、およびこの2つのクラスターの存在比がCuとCoの組成によって異なるという興味深い現象を見いだした。これらの結果を1993年夏に行われた三つの国際会議(8th Int.Conf. on Rapidly Quenched and Metastable Materials,Sendai(Japan);IUCrXVICongress,Beijin(China);Symposium on Quasicrystals andImperfectly Ordered Crystals,Chendge(China))で発表した。 2.デカゴナル相準結晶の構造は5次元周期構造の3次元断面として記述できる(断面法)。断面法により準結晶の3次元構造を得るプログラムを独自に作成した。これを用いてAl-Ni-Fe系およびAl-Cu-Co系非中心対称準結晶に対する構造モデルを作成した。これをもとに高分解能像のマルチスライス法によるシミュレーションを行い、実験で得た高分解能電子顕微鏡と比較し、比較的よい一致を得た。またこのシミュレーションを通して、加速電圧200kVでは非中心対称性の明瞭な像が得られるのに対し、加速電圧300kV,400kVでは非中心対称性の不明瞭な像しか得られないことを見いだした。これは結像に寄与する反射の違いによる。さらに今後この構造モデルについて検討、改良を加える。

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Academic Activities 4

  1. 第29回電子顕微鏡大学

    2019/07/04 - 2019/07/05

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    講師「電子回折法」

  2. 第28回電子顕微鏡大学

    2018/07/03 - 2018/07/04

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    講師「電子回折法」

  3. 第27回電子顕微鏡大学

    2017/07/06 - 2017/07/07

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    講師「電子回折法」

  4. 日本顕微鏡学会第26回電子顕微鏡大学

    2016/07/07 - 2016/07/08

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    講師「電子回折法」

Other 3

  1. Transmission Electron Microscopy (TEM) and Convergent-Beam Electron Diffraction (CBED)

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    Online lecture for Faculty of Science, Chiang Mai University

  2. TEM-CBED techniques

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    Lecture at Department of Industrial Chemistry, Faculty of Science, Chiang Mai University, Chiang Mai, Thailand

  3. JEOL 2016TEMユーザーズミーティング