Details of the Researcher

PHOTO

Mitsuru Akaki
Section
Institute for Materials Research
Job title
Assistant Professor
Degree

  • 博士（理学）（上智大学）

  • 修士（理学）（上智大学）

e-Rad No.
60610904
Profile

ホームページを作成しました。
https://sites.google.com/view/mitsuru-akaki

Research History 7

  • 2022/04 - Present
    Tohoku University　Institute for Materials Research　Assistant Professor

  • 2020/03 - 2022/03
    Kobe University　Molecular Photoscience Research Center

  • 2017/04 - 2020/02
    AHMF, Grad. Sch. Sci., Osaka Univ.,　Specially Appointed Research Associate

  • 2014/04 - 2017/03
    AHMF, Grad. Sch. Sci., Osaka Univ.,　Research Associate

  • 2012/04 - 2014/03
    ISSP, UTokyo　Project Researcher

  • 2011/04 - 2012/03
    Dep. Phys., Sophia Univ.　Project Researcher

  • 2008/04 - 2011/03
    JSPS　Research Fellowship for Young Scientists (DC1)

Show all Show first 5

Committee Memberships 1

  • 日本物理学会　領域3 運営委員

    2017/04 - 2018/03

Professional Memberships 3

  • The Society of Electron Spin Science and Technology (SEST)

  • HIGH MAGNETIC FIELD FORUM

  • THE PHYSICAL SOCIETY OF JAPAN

Research Interests 5

  • Solid state physics

  • Dielectricty

  • Magnetism

  • High magnetic field

  • Multiferroic

Research Areas 1

  • Natural sciences / Magnetism, superconductivity, and strongly correlated systems /

Awards 2

  1. 奨励賞

    2022/12　The Society of Electron Spin Science and Technology　Study of electromagnons by pulsed high-field and multi-frequency ESR

  2. Young Scientist Award of the Physical Society of Japan

    2021/10　The Physical Society of Japan

Papers 80

  1. X-ray diffraction study of the magnetization plateau above 40 T in the frustrated helimagnet CuGaCr4S8

    M. Gen, K. Noda, K. Shimbori, T. Tanaka, D. Bhoi, K. Seki, H. Kobayashi, K. Gautam, M. Akaki, Y. Ishii, Y. H. Matsuda, Y. Kubota, Y. Inubushi, M. Yabashi, Y. Kohama, T. Arima, A. Ikeda

    Physical Review B　2025/06/27

    DOI： 10.1103/6d8j-9lf5 　

  2. Terahertz broadband one-way transparency with spontaneous magnon decay

    Mitsuru Akaki, Masashige Matsumoto, Yasuo Narumi, Susumu Okubo, Hitoshi Ohta, Masayuki Hagiwara

    Science Advances　2025/02/28

    DOI： 10.1126/sciadv.ado6783 　

  3. Magnetic structure and magnetoelectric properties of the spin-flop phase in <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:msub><mml:mi>LiFePO</mml:mi><mml:mn>4</mml:mn></mml:msub></mml:math>

    Sofie Holm-Janas, Mitsuru Akaki, Ellen Fogh, Takumi Kihara, Manh Duc Le, Paola Catarina Forino, Stanislav E. Nikitin, Tom Fennell, Adheena Painganoor, David Vaknin, Masao Watanabe, Niels Bech Christensen, Hiroyuki Nojiri, Rasmus Toft-Petersen

    Physical Review B　109　(17)　2024/05/06

    Publisher: American Physical Society (APS)

    DOI： 10.1103/physrevb.109.174413 　

    ISSN： 2469-9950

    eISSN： 2469-9969

  4. Field-induced electric polarization and elastic softening caused by parity-mixed d−p hybridized states with electric multipoles in Ba2CuGe2O7 Peer-reviewed

    R. Kurihara, Y. Sato, A. Miyake, M. Akaki, K. Mitsumoto, M. Hagiwara, H. Kuwahara, M. Tokunaga

    Physical Review B　109　(12)　2024/03/18

    Publisher: American Physical Society (APS)

    DOI： 10.1103/PhysRevB.109.125129 　

    ISSN： 2469-9950

    eISSN： 2469-9969

  5. Magnetic Excitation in the S=1=2 Ising-like Antiferromagnetic Chain CsCoCl3 in Longitudinal Magnetic Fields Studied by High-field ESR Measurements

    Shojiro Kimura, Hiroaki Onishi, Kouichi Okunishi, Mitsuru Akaki, Yasuo Narumi, Masayuki Hagiwara, Koichi Kindo, Hikomitsu Kikuchi

    JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN　92　(9)　2023/07

    DOI： 10.7566/JPSJ.92.094701 　

    ISSN： 0031-9015

  6. Control of Multi-domain Structure in Multiferroic CaBaCo4O7 Crystal

    Hinata Arai, Takumi Shirasaki, Mitsuru Akaki, Haruhiko Kuroe, Hideki Kuwahara

    Proceedings of the 29th International Conference on Low Temperature Physics (LT29)　2023/05/22

    Publisher: Journal of the Physical Society of Japan

    DOI： 10.7566/jpscp.38.011126 　

  7. Relief of spin frustration through magnetic anisotropy in the quasi-one-dimensional S= 12 antiferromagnet Na2CuSO4Cl2

    M. Fujihala, Y. Sakuma, S. Mitsuda, A. Nakao, K. Munakata, R. A. Mole, S. Yano, D. H. Yu, K. Takehana, Y. Imanaka, M. Akaki, S. Okubo, H. Ohta

    Physical Review B　105　(14)　2022/04

    DOI： 10.1103/PhysRevB.105.144410 　

    ISSN： 2469-9950

    eISSN： 2469-9969

  8. Optical selection rules of the magnetic excitation in the S=12 one-dimensional Ising-like antiferromagnet BaCo2V2O8

    Shojiro Kimura, Hiroaki Onishi, Akira Okutani, Mitsuru Akaki, Yasuo Narumi, Masayuki Hagiwara, Kouichi Okunishi, Koichi Kindo, Zhangzhen He, Tomoyasu Taniyama, Mitsuru Itoh

    Physical Review B　105　(1)　2022/01/18

    Publisher: American Physical Society (APS)

    DOI： 10.1103/physrevb.105.014417 　

    ISSN： 2469-9950

    eISSN： 2469-9969

  9. Nonreciprocal linear dichroism observed in electron spin resonance spectra of the magnetoelectric multiferroic Pb(TiO)Cu4(PO4)4

    Mitsuru Akaki, Kenta Kimura, Yasuyuki Kato, Yuya Sawada, Yasuo Narumi, Hitoshi Ohta, Tsuyoshi Kimura, Yukitoshi Motome, Masayuki Hagiwara

    Physical Review Research　3　(4)　2021/12/17

    Publisher: American Physical Society (APS)

    DOI： 10.1103/PhysRevResearch.3.L042043 　

    eISSN： 2643-1564

  10. Hepta-coordinated Ni(II) assemblies - structure and magnetic studies. International-journal

    Mateusz Reczyński, Mitsuru Akaki, Takamitsu Fukuda, Yuya Sawada, Kengo Nishii, Masayuki Hagiwara, Wojciech Nitek, Barbara Sieklucka, Beata Nowicka

    Dalton transactions (Cambridge, England : 2003)　50　(15)　5251-5261　2021/04/21

    DOI： 10.1039/d1dt00479d 　

    More details Close

    Two mononuclear complexes [Ni(dapsc)(H2O)2]Cl(NO3)·H2O (1) and [Ni(dapsc)(NCS)2] (2), and a bimetallic CN-bridged trinuclear molecule [NiII(dapsc)(H2O)]2[WIV(CN)8]·11H2O (3) (dapsc = 2,6-diacetylpyridine-bis(semicarbazone)) were synthesised and characterised in terms of structure and magnetic properties. All three compounds contain Ni(ii) ions in a pentagonal bipyramid coordination geometry afforded by the equatorial pentadentate ligand (dapsc) and two O- or N-donating axial ligands. The compounds differ in the relative arrangement of the complexes, intermolecular interactions and distortion from the ideal coordination geometry. The high-field EPR and magnetometric studies show large anisotropy of the Ni(ii) centres with the D parameters in the range of -10.5 to -21.2 cm-1 and negligible antiferromagnetic interactions. The easy-axis magnetic anisotropies of 1-3 were reproduced by ab initio CASSCF/NEVPT2 calculations. The ground states consist mainly of the |MS = |±1 states, which is consistent with the fact that no out-of-phase signal can be detected in the AC magnetic susceptibility measurements.

  11. Low-energy magnetic excitations in the mixed spin-( 12,52 ) chain

    H. Yamaguchi, Y. Iwasaki, Y. Kono, T. Okita, A. Matsuo, M. Akaki, M. Hagiwara, Y. Hosokoshi

    Physical Review B　102　(6)　2020/08/28

    Publisher: American Physical Society (APS)

    DOI： 10.1103/physrevb.102.060408 　

    ISSN： 2469-9950

    eISSN： 2469-9969

  12. Temperature dependence of high-field and multi-frequency ESR on the triangular lattice magnet NiGa2S4

    Narumi Y., Akaki M., Nambu Y., Hagiwara M.

    Meeting Abstracts of the Physical Society of Japan　75.1　1098-1098　2020

    Publisher: The Physical Society of Japan

    DOI： 10.11316/jpsgaiyo.75.1.0_1098 　

    eISSN： 2189-0803

  13. Synthesis of a Neutral Mononuclear Four-Coordinate Co(II) Complex Having Two Halved Phthalocyanine Ligands That Shows Slow Magnetic Relaxations under Zero Static Magnetic Field. International-journal Peer-reviewed

    Toshiharu Ishizaki, Takamitsu Fukuda, Mitsuru Akaki, Akira Fuyuhiro, Masayuki Hagiwara, Naoto Ishikawa

    Inorganic chemistry　58　(8)　5211-5220　2019/04/15

    DOI： 10.1021/acs.inorgchem.9b00286 　

    ISSN： 0020-1669

    eISSN： 1520-510X

  14. Magnetoelectric behavior from cluster multipoles in square cupolas: Study of Sr(TiO)Cu-4(PO4)(4) in comparison with Ba and Pb isostructurals Peer-reviewed

    Kato, Yasuyuki, Kimura, Kenta, Miyake, Atsushi, Tokunaga, Masashi, Matsuo, Akira, Kindo, Koichi, Akaki, Mitsuru, Hagiwara, Masayuki, Kimura, Shojiro, Kimura, Tsuyoshi, Motome, Yukitoshi

    PHYSICAL REVIEW B　99　(2)　024415-024415　2019/01

    DOI： 10.1103/PhysRevB.99.024415 　

    ISSN： 2469-9950

    eISSN： 2469-9969

  15. Magnetic structural unit with convex geometry: A building block hosting an exchange-striction-driven magnetoelectric coupling Peer-reviewed

    Kimura, Kenta, Kato, Yasuyuki, Yamauchi, Kunihiko, Miyake, Atsushi, Tokunaga, Masashi, Matsuo, Akira, Kindo, Koichi, Akaki, Mitsuru, Hagiwara, Masayuki, Kimura, Shojiro, Toyoda, Masayuki, Motome, Yukitoshi, Kimura, Tsuyoshi

    PHYSICAL REVIEW MATERIALS　2　(10)　104415-104415　2018/10

    DOI： 10.1103/PhysRevMaterials.2.104415 　

    ISSN： 2475-9953

  16. Electric dipole spin resonance in a quantum spin dimer system driven by magnetoelectric coupling Peer-reviewed

    Kimur, Shojiro, Matsumoto, Masashige, Akaki, Mitsuru, Hagiwara, Masayuki, Kindo, Koichi, Tanaka, Hidekazu

    PHYSICAL REVIEW B　97　(14)　140406-140406　2018/04

    DOI： 10.1103/PhysRevB.97.140406 　

    ISSN： 2469-9950

    eISSN： 2469-9969

  17. Observation of spin-quadrupolar excitations in Sr2CoGe2O7 (Theory)

    Akaki Mitsuru, Yoshizawa Daichi, Okutani Akira, Kida Takanori, Romhanyi Judit, Penc Karlo, Hagiwara Masayuki

    Meeting Abstracts of the Physical Society of Japan　73　(0)　1173-1173　2018

    Publisher: The Physical Society of Japan

    DOI： 10.11316/jpsgaiyo.73.1.0_1173 　

  18. Magnetoelectric properties of Ca2CoSi2O7 studied by high-field electron spin resonance Peer-reviewed

    Akaki, Mitsuru, Kanaida, Konatsu, Hagiwara, Masayuki

    28TH INTERNATIONAL CONFERENCE ON LOW TEMPERATURE PHYSICS (LT28)　969　2018

    DOI： 10.1088/1742-6596/969/1/012102 　

    ISSN： 1742-6588

    eISSN： 1742-6596

  19. Direct observation of spin-quadrupolar excitations in Sr2CoGe2O7 by high-field electron spin resonance Peer-reviewed

    Mitsuru Akaki, Daichi Yoshizawa, Akira Okutani, Takanori Kida, Judit Romhanyi, Karlo Penc, Masayuki Hagiwara

    PHYSICAL REVIEW B　96　(21)　214406-214406　2017/12

    DOI： 10.1103/PhysRevB.96.214406 　

    ISSN： 2469-9950

    eISSN： 2469-9969

  20. NMR study on the quasi-one dimensional antiferromagnet BaCo2Si2O7 Peer-reviewed

    R. Uesugi, M. Akaki, M. Hagiwara, H. Kuwahara, T. Goto

    Journal of Physics: Conference Series　828　(1)　2017/04/20

    DOI： 10.1088/1742-6596/828/1/012015 　

    ISSN： 1742-6596 1742-6588

    eISSN： 1742-6596

  21. Magnetoelectric Behavior from S=1/2 Asymmetric Square Cupolas. International-journal Peer-reviewed

    Yasuyuki Kato, Kenta Kimura, Atsushi Miyake, Masashi Tokunaga, Akira Matsuo, Koichi Kindo, Mitsuru Akaki, Masayuki Hagiwara, Masakazu Sera, Tsuyoshi Kimura, Yukitoshi Motome

    Physical review letters　118　(10)　107601-107601　2017/03/10

    DOI： 10.1103/PhysRevLett.118.107601 　

    ISSN： 0031-9007

    eISSN： 1079-7114

  22. Multipole decomposition and magnetoelectric behavior in square cupola systems

    Kato Yasuyuki, Kimura Tsuyoshi, Motome Yukitoshi, Kimura Kenta, Miyake Atsushi, Tokunaga Masashi, Matsuo Akira, Kindo Koichi, Akaki Mitsuru, Hagiwara Masayuki, Sera Masakazu

    Meeting Abstracts of the Physical Society of Japan　72　(0)　2351-2351　2017

    Publisher: The Physical Society of Japan

    DOI： 10.11316/jpsgaiyo.72.1.0_2351 　

  23. Multifrequency ERS in S=1 dimerized quantum magnet Ba2NiSi2O6Cl2

    Tanaka Hidekazu, Koike Masato, Kurita Nobuyuki, Watanabe Masari, Akaki Mitsuru, Okutani Akira, Hagiwara Masayuki

    Meeting Abstracts of the Physical Society of Japan　72　(0)　827-827　2017

    Publisher: The Physical Society of Japan

    DOI： 10.11316/jpsgaiyo.72.2.0_827 　

  24. High-field magnetoelectric properties in the square cupola antiferromagnet Pb(TiO)Cu4(PO4)4

    Kimura K., Miyake A., Tokunaga M., Matsuo A., Kindo K., Akaki M., Hagiwara M., Kimura S., Kimura T.

    Meeting Abstracts of the Physical Society of Japan　72　(0)　866-866　2017

    Publisher: The Physical Society of Japan

    DOI： 10.11316/jpsgaiyo.72.2.0_866 　

  25. Developments of versatile pulsed high magnetic field apparatuses based on 10 MJ condenser bank system and it's application to strongly correlated electron system researches.

    Narumi Y., Kida T., Akaki M., Hagiwara M.

    Meeting Abstracts of the Physical Society of Japan　72　(0)　2408-2408　2017

    Publisher: The Physical Society of Japan

    DOI： 10.11316/jpsgaiyo.72.1.0_2408 　

  26. Development of electron spin resonance apparatus conducted under high pressure using a far infrared light source with high power

    Takata A., Idehara T., Hagiwara M., Kida T., Akaki M., Sakurai T., Oki E., Ohta H., Mitsudo S., Fujii Y., Ogawa I.

    Meeting Abstracts of the Physical Society of Japan　72　(0)　1108-1108　2017

    Publisher: The Physical Society of Japan

    DOI： 10.11316/jpsgaiyo.72.1.0_1108 　

  27. Magneto electric effects of Ba2CuGe2O7 in high magnetic fields

    Tokunaga M., Sato Y., Akaki M., Miyake A., Hagiwara M., Kuwahara H.

    Meeting Abstracts of the Physical Society of Japan　71　1852-1852　2016

    Publisher: The Physical Society of Japan

    DOI： 10.11316/jpsgaiyo.71.2.0_1852 　

  28. Magnetization Curve and Magnetoelectric Effect in Antiferromagnetic Chiral Square Cupolas (A(TiO)Cu4(PO4)4(A=Ba, Sr))

    Kato Yasuyuki, Kimura Kenta, Miyake Atsushi, Tokunaga Masashi, Matsuo Akira, Kindo Koichi, Akaki Mitsuru, Hagiwara Masayuki, Sera Masakazu, Kimura Tsuyoshi, Motome Yukitoshi

    Meeting Abstracts of the Physical Society of Japan　71　1850-1850　2016

    Publisher: The Physical Society of Japan

    DOI： 10.11316/jpsgaiyo.71.2.0_1850 　

  29. High field studies on BiFeO3 single crystals grown by the laser-diode heating floating zone method Peer-reviewed

    M. Tokunaga, M. Akaki, A. Miyake, T. Ito, H. Kuwahara

    Journal of Magnetism and Magnetic Materials　383　259-261　2015/06/01

    Publisher: North-Holland

    DOI： 10.1016/j.jmmm.2014.10.026 　

    ISSN： 1873-4766

  30. High field studies on BiFeO3 single crystals grown by the laser-diode heating floating zone method Peer-reviewed

    M. Tokunaga, M. Akaki, A. Miyake, T. Ito, H. Kuwahara

    JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS　383　259-261　2015/06

    DOI： 10.1016/j.jmmm.2014.10.026 　

    ISSN： 0304-8853

    eISSN： 1873-4766

  31. One-Third Magnetization Plateau with a Preceding Novel Phase in Volborthite Peer-reviewed

    H. Ishikawa, M. Yoshida, K. Nawa, M. Jeong, S. Kraemer, M. Horvatic, C. Berthier, M. Takigawa, M. Akaki, A. Miyake, M. Tokunaga, K. Kindo, J. Yamaura, Y. Okamoto, Z. Hiroi

    PHYSICAL REVIEW LETTERS　114　(22)　227202-227202　2015/06

    DOI： 10.1103/PhysRevLett.114.227202 　

    ISSN： 0031-9007

    eISSN： 1079-7114

  32. Magnetic control of transverse electric polarization in BiFeO3 Peer-reviewed

    M. Tokunaga, M. Akaki, T. Ito, S. Miyahara, A. Miyake, H. Kuwahara, N. Furukawa

    Nature Communications　6　5878-5878　2015/01

    DOI： 10.1038/ncomms6878 　

    ISSN： 2041-1723

  33. Impurity Substitution Effect on Magnetoelectric Properties of CaBaCo4O7 Crystals Peer-reviewed

    Ryosuke Oda, Ryo Kajihara, Kosuke Nishina, Mitsuru Akaki, Haruhiko Kuroe, Hideki Kuwahara

    20TH INTERNATIONAL CONFERENCE ON MAGNETISM, ICM 2015　75　303-308　2015

    DOI： 10.1016/j.phpro.2015.12.036 　

    ISSN： 1875-3892

  34. Interplay between Ferroelectric and Antiferromagnetic Phase Transitions in RbCoBr3 Peer-reviewed

    Yoichi Nishiwaki, Toshihisa Yamaguchi, Masaaki Takashige, Haruhiko Kuroe, Mitsuru Akaki, Hideki Kuwahara, Tetsuya Kato, Katsunori Iio

    JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN　83　(11)　114708-114708　2014/11

    DOI： 10.7566/JPSJ.83.114708 　

    ISSN： 0031-9015

  35. Interplay between Ferroelectric and Antiferromagnetic Phase Transitions in RbCoBr3 Peer-reviewed

    Yoichi Nishiwaki, Toshihisa Yamaguchi, Masaaki Takashige, Haruhiko Kuroe, Mitsuru Akaki, Hideki Kuwahara, Tetsuya Kato, Katsunori Iio

    Journal of the Pysical Society of Japan　83　(11)　114708-114708/8　2014/10/27

    Publisher: The Physical Society of Japan

    DOI： 10.7566/JPSJ.83.114708 　

    ISSN： 1347-4073

  36. Successive Magnetic Transitions of Ca2CoSi2O7 in High Magnetic Fields Peer-reviewed

    Mitsuru Akaki, Hideki Kuwahara, Akira Matsuo, Koichi Kindo, Masashi Tokunaga

    JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN　83　(9)　2014/09

    DOI： 10.7566/JPSJ.83.093704 　

    ISSN： 0031-9015

  37. Successive magnetic transitions of Ca2CoSi2O7 in high magnetic fields Peer-reviewed

    Akaki, Mitsuru, Kuwahara, Hideki, Matsuo, Akira, Kindo, Koichi, Tokunaga, Masashi

    Journal of the Physical Society of Japan　83　(9)　093704-093704　2014/08/18

    Publisher: The Physical Society of Japan

    DOI： 10.7566/JPSJ.83.093704 　

    ISSN： 1347-4073

  38. Magnetic Properties of Chalcopyrite Cu1−xFeS2 at Low Temperatures Peer-reviewed

    K. Kobayashi, Y. Azuma, K. Kawashima, K. Horigane, M. Akaki, M. Tokunaga, J. Akimitsu

    Proceedings of the International Conference on Strongly Correlated Electron Systems (SCES2013)　2014/06/16

    Publisher: Journal of the Physical Society of Japan

    DOI： 10.7566/jpscp.3.017020 　

  39. Magnetic and Dielectric Properties in Multiferroic Cu3Mo2O9 under High Magnetic Fields Peer-reviewed

    H. Kuroe, K. Aoki, R. Kino, T. Sato, H. Kuwahara, T. Sekine, T. Kihara, M. Akaki, Y. Kohama, M. Tokunaga, A. Matsuo, K. Kindo, M. Hase, K. Takihana, H. Kitazawa, K. Oka, T. Ito, H. Eisaki

    JPS Conf. Proc.　3　014056　2014/06/16

    Publisher: Journal of the Physical Society of Japan

    DOI： 10.7566/jpscp.3.014036 　

  40. Magnetoelectric Effects in Mono-domain Crystals of BiFeO3 Peer-reviewed

    Masashi Tokunaga, Mitsuru Akaki, Hideki Kuwahara, Toshimitsu Ito, Akira Matsuo, Koichi Kindo

    Proceedings of the International Conference on Strongly Correlated Electron Systems (SCES2013) JPS Conference Proceedings ; 3　014038-1-014038-6　2014/06

    Publisher: Physical Society of Japan

    DOI： 10.7566/JPSCP.3.014038 　

  41. Reduction of critical field for magnetic and orbital-ordering phase transition in impurity-substituted Nd0.45Sr0.55MnO3 crystal Peer-reviewed

    Y. Izuchi, M. Akaki, D. Akahoshi, H. Kuwahara

    APL MATERIALS　2　(2)　022106-022106　2014/02

    DOI： 10.1063/1.4866050 　

    ISSN： 2166-532X

  42. Novel multiferroic phase of CsCuCl<inf>3</inf> in High Magnetic Fields Peer-reviewed

    J. Shibuya, M. Akaki, Y. Kohama, A. Miyake, M. Tokunaga, H. Tanaka

    Journal of Physics: Conference Series　568　2014

    DOI： 10.1088/1742-6596/568/4/042030 　

    ISSN： 1742-6588

    eISSN： 1742-6596

  43. Low-temperature thermoelectric properties of the electron-doped perovskites Sr1-x Ca (x) Ti1-y Nb (y) O-3 Peer-reviewed

    Tetsuji Okuda, Junichi Fukuyado, Kurahito Narikiyo, Mitsuru Akaki, Hideki Kuwahara

    JOURNAL OF THE KOREAN PHYSICAL SOCIETY　63　(3)　428-432　2013/08

    DOI： 10.3938/jkps.63.428 　

    ISSN： 0374-4884

    eISSN： 1976-8524

  44. Control of coexisting ferroelectric phases in RMnO3 crystals with fine tuning of 4f moment Peer-reviewed

    Tomoya Tadokoro, Naoaki Kano, Haruhiko Kuroe, Tomoyuki Sekine, Hideki Kuwahara, Mitsuru Akaki

    JOURNAL OF THE KOREAN PHYSICAL SOCIETY　63　(3)　504-507　2013/08

    DOI： 10.3938/jkps.63.504 　

    ISSN： 0374-4884

    eISSN： 1976-8524

  45. Thermal, dielectric, and magnetic properties in multiferroic Cu2.85Zn0.15Mo2O9 Peer-reviewed

    Haruhiko Kuroe, Kento Aoki, Ryusuke Itoh, Tomohiro Hosaka, Takuya Hasegawa, Suguru Hachiuma, Mitsuru Akaki, Hideki Kuwahara, Tomoyuki Sekine, Masashi Hase, Kunihiko Oka, Toshimitsu Ito, Hiroshi Eisaki

    JOURNAL OF THE KOREAN PHYSICAL SOCIETY　63　(3)　542-545　2013/08

    DOI： 10.3938/jkps.63.542 　

    ISSN： 0374-4884

    eISSN： 1976-8524

  46. Anisotropic magnetic properties in kermanite Sr-2 MSi2O7 (M=Co, Mn) crystals Peer-reviewed

    Mitsuru Akaki, Tomoya Tadokoro, Hideki Kuwahara, Takumi Kihara, Masashi Tokunaga

    JOURNAL OF THE KOREAN PHYSICAL SOCIETY　62　(12)　1812-1814　2013/07

    DOI： 10.3938/jkps.62.1812 　

    ISSN： 0374-4884

    eISSN： 1976-8524

  47. Magnetic control of electric polarization in the noncentrosymmetric compound (Cu,Ni)B2O4 Peer-reviewed

    N. D. Khanh, N. Abe, K. Kubo, M. Akaki, M. Tokunaga, T. Sasaki, T. Arima

    Physical Review B - Condensed Matter and Materials Physics　87　(18)　2013/05/16

    DOI： 10.1103/PhysRevB.87.184416 　

    ISSN： 1098-0121 1550-235X

  48. Magnetic control of electric polarization in the noncentrosymmetric compound (Cu, Ni)B2O4 Peer-reviewed

    N. D. Khanh, N. Abe, K. Kubo, M. Akaki, M. Tokunaga, T. Sasaki, T. Arima

    PHYSICAL REVIEW B　87　(18)　184416-184416　2013/05

    DOI： 10.1103/PhysRevB.87.184416 　

    ISSN： 2469-9950

    eISSN： 2469-9969

  49. High magnetic field dependence of magnetodielectric properties in Sr 2CoSi2O7 crystal Peer-reviewed

    M. Akaki, T. Tadokoro, T. Kihara, M. Tokunaga, H. Kuwahara

    Journal of Low Temperature Physics　170　(5-6)　291-295　2013/03

    DOI： 10.1007/s10909-012-0796-z 　

    ISSN： 0022-2291 1573-7357

  50. Multiferroic properties of an åkermanite Sr 2CoSi 2O 7 single crystal in high magnetic fields

    M. Akaki, H. Iwamoto, T. Kihara, M. Tokunaga, H. Kuwahara

    Physical Review B - Condensed Matter and Materials Physics　86　(6)　060413(R)(4pages)-060413　2012/08/28

    Publisher: American Physical Society

    DOI： 10.1103/PhysRevB.86.060413 　

    ISSN： 1098-0121 1550-235X

  51. Multiferroic properties of an akermanite Sr2CoSi2O7 single crystal in high magnetic fields Peer-reviewed

    M. Akaki, H. Iwamoto, T. Kihara, M. Tokunaga, H. Kuwahara

    PHYSICAL REVIEW B　86　(6)　2012/08

    DOI： 10.1103/PhysRevB.86.060413 　

    ISSN： 1098-0121

  52. Thermoelectric properties of the electron-doped perovskites Sr1-xCaxTi1-yNbyO3 Peer-reviewed

    J. Fukuyado, K. Narikiyo, M. Akaki, H. Kuwahara, T. Okuda

    PHYSICAL REVIEW B　85　(7)　075112-075112　2012/02

    DOI： 10.1103/PhysRevB.85.075112 　

    ISSN： 1098-0121

  53. Magnetoelectric property in 3d transition metal oxide with tetrahedral structure

    H. Iwamoto, M. Ehara, M. Akaki, H. Kuwahara

    Journal of Physics: Conference Series　400　(3)　032031 (4pages)　2012

    Publisher: Institute of Physics Publishing

    DOI： 10.1088/1742-6596/400/3/032031 　

    ISSN： 1742-6596 1742-6588

  54. Anisotropic magneto-transport properties of layered perovskite Sr 3Fe2-xCoxC7-δ crystals

    R. Nakamura, J. Tozawa, M. Akaki, D. Akahoshi, K. Itatani, H. Kuwahara

    Journal of Physics: Conference Series　400　(3)　032060 (4pages)　2012

    Publisher: Institute of Physics Publishing

    DOI： 10.1088/1742-6596/400/3/032060 　

    ISSN： 1742-6596 1742-6588

  55. Anisotropic magneto-transport properties of layered perovskite Sr3Fe2-xCoxO7-delta crystals Peer-reviewed

    R. Nakamura, J. Tozawa, M. Akaki, D. Akahoshi, K. Itatani, H. Kuwahara

    26TH INTERNATIONAL CONFERENCE ON LOW TEMPERATURE PHYSICS (LT26), PTS 1-5　400　2012

    DOI： 10.1088/1742-6596/400/3/032060 　

    ISSN： 1742-6588

  56. Magnetoelectric property in 3d transition metal oxide with tetrahedral structure Peer-reviewed

    H. Iwamoto, M. Ehara, M. Akaki, H. Kuwahara

    26TH INTERNATIONAL CONFERENCE ON LOW TEMPERATURE PHYSICS (LT26), PTS 1-5　400　2012

    DOI： 10.1088/1742-6596/400/3/032031 　

    ISSN： 1742-6588

  57. Magnetic and Transport Properties of Quasi Two-Dimensional Ferromagnet Sr3Fe2-xCoxO7-delta (x=0.2 and 0.5) Peer-reviewed

    Daisuke Akahoshi, Jun-ichiro Tozawa, Ryouta Nakamura, Mitsuru Akaki, Hideki Kuwahara

    JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN　80　(12)　124702-124702　2011/12

    DOI： 10.1143/JPSJ.80.124702 　

    ISSN： 0031-9015

  58. Ferromagnetic Behavior of (Fe1-yZny)(2)Mo3O8 (0 &lt;= y &lt;= 1) Induced by Nonmagnetic Zn Substitution Peer-reviewed

    Shungo Nakayama, Ryouta Nakamura, Mitsuru Akaki, Daisuke Akahoshi, Hideki Kuwahara

    JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN　80　(10)　104706-104706　2011/10

    DOI： 10.1143/JPSJ.80.104706 　

    ISSN： 0031-9015

  59. Anomalous coexistence of ferroelectric phases (P ∥ a and P ∥ c) in orthorhombic Eu1-yYyMnO3 (y &gt; 0.5) crystals

    Mitsuru Akaki, Masaaki Hitomi, Mizuaki Ehara, Daisuke Akahoshi, Hideki Kuwahara

    Journal of the Physical Society of Japan　80　(9)　094706-094706-4　2011/09

    Publisher: Physical Society of Japan

    DOI： 10.1143/JPSJ.80.094706 　

    ISSN： 0031-9015 1347-4073

  60. Anomalous Coexistence of Ferroelectric Phases (P parallel to a and P parallel to c) in Orthorhombic Eu1-yYyMnO3 (y &gt; 0.5) Crystals Peer-reviewed

    Mitsuru Akaki, Masaaki Hitomi, Mizuaki Ehara, Daisuke Akahoshi, Hideki Kuwahara

    JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN　80　(9)　2011/09

    DOI： 10.1143/JPSJ.80.094706 　

    ISSN： 0031-9015

  61. Electron- and Hole-Doping Effects on A-Site Ordered NdBaMn2O6 Peer-reviewed

    Yasuhiro Miyauchi, Mitsuru Akaki, Daisuke Akahoshi, Hideki Kuwahara

    JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN　80　(7)　074708-074708　2011/07

    DOI： 10.1143/JPSJ.80.074708 　

    ISSN： 0031-9015

  62. The Effect of f-d Magnetic Coupling in Multiferroic RMnO3 Crystals Peer-reviewed

    Masaaki Hitomi, Mizuaki Ehara, Mitsuru Akaki, Daisuke Akahoshi, Hideki Kuwahara

    JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN　79　(5)　054704-054704　2010/05

    DOI： 10.1143/JPSJ.79.054704 　

    ISSN： 0031-9015

  63. Effects of magnetic field and pressure on the antiferromagnetic and weak-ferromagnetic orders in tetrahedral spin chain system Cu3Mo2O9

    T. Hamasaki, H. Kuroe, T. Sekine, M. Akaki, KUWAHARA HIDEKI, M. Hase

    Journal of Physics: Conference Series　200　(2)　022013　2010/02/15

    Publisher: Institute of Physics

    DOI： 10.1088/1742-6596/200/2/022013 　

    ISSN： 1742-6596

  64. Magnetoelectric properties of (Ca ${$sub 1-x$}$ Sr ${$sub x$}$)${$sub 2$}$ CoSi ${$sub 2$}$ O ${$sub 7$}$ Crystals

    Akaki, M., Tozawa, J., Hitomi, M., Akahoshi, D., Kuwahara, H.

    2010

  65. Magnetoelectric properties of (Ca1-xSrx) 2CoSi2O7 Crystals

    M. Akaki, J. Tozawa, M. Hitomi, D. Akahoshi, H. Kuwahara

    Journal of Physics: Conference Series　200　(1)　012003　2010

    Publisher: Institute of Physics Publishing

    DOI： 10.1088/1742-6596/200/1/012003 　

    ISSN： 1742-6596 1742-6588

  66. A-site substitution effect on physical properties of Sr3Fe 2-xCoxO7-δ

    J. Tozawa, M. Akaki, D. Akahoshi, H. Kuwahara, K. Itatani

    Journal of Physics: Conference Series　200　(1)　012209　2010

    Publisher: Institute of Physics Publishing

    DOI： 10.1088/1742-6596/200/1/012209 　

    ISSN： 1742-6596 1742-6588

  67. R-site randomness effect in double-perovskite RBaMn2O 6

    Y. Miyauchi, S. Fukushima, J. Tozawa, M. Akaki, H. Kuwahara, D. Akahoshi

    Journal of Physics: Conference Series　200　(1)　012123　2010

    Publisher: Institute of Physics Publishing

    DOI： 10.1088/1742-6596/200/1/012123 　

    ISSN： 1742-6596 1742-6588

  68. R-site Randomness Effect in Double-Perovskite RBaMn(2)O(6) Peer-reviewed

    Y. Miyauchi, S. Fukushima, J. Tozawa, M. Akaki, H. Kuwahara, D. Akahoshi

    INTERNATIONAL CONFERENCE ON MAGNETISM (ICM 2009)　200　2010

    DOI： 10.1088/1742-6596/200/1/012123 　

    ISSN： 1742-6588

  69. A-site substitution effect on physical properties of Sr(3)Fe(2-x)Co(x)O(7-delta) Peer-reviewed

    J. Tozawa, M. Akaki, D. Akahoshi, H. Kuwahara, K. Itatani

    INTERNATIONAL CONFERENCE ON MAGNETISM (ICM 2009)　200　2010

    DOI： 10.1088/1742-6596/200/1/012209 　

    ISSN： 1742-6588

  70. Effects of magnetic field and pressure on the antiferromagnetic and weak-ferromagnetic orders in tetrahedral spin chain system Cu3Mo2O9 Peer-reviewed

    T. Hamasaki, H. Kuroe, T. Sekine, M. Akaki, H. Kuwahara, M. Hase

    INTERNATIONAL CONFERENCE ON MAGNETISM (ICM 2009)　200　2010

    DOI： 10.1088/1742-6596/200/2/022013 　

    ISSN： 1742-6588

  71. Magnetoelectric Properties of (Ca1-xSrx)(2)CoSi2O7 Crystals Peer-reviewed

    M. Akaki, J. Tozawa, M. Hitomi, D. Akahoshi, H. Kuwahara

    INTERNATIONAL CONFERENCE ON MAGNETISM (ICM 2009)　200　2010

    DOI： 10.1088/1742-6596/200/1/012003 　

    ISSN： 1742-6588

  72. Gigantic magnetoelectric effect caused by magnetic-field-induced canted antiferromagnetic-paramagnetic transition in quasi-two-dimensional Ca2CoSi2O7 crystal Peer-reviewed

    M. Akaki, J. Tozawa, D. Akahoshi, H. Kuwahara

    APPLIED PHYSICS LETTERS　94　(21)　212904-212904　2009/05

    DOI： 10.1063/1.3147195 　

    ISSN： 0003-6951

  73. Cr-doping effect on the orbital fluctuation of heavily doped Nd(1-x)SrxMnO(3) (x approximate to 0.625) Peer-reviewed

    R. Tasaki, S. Fukushima, M. Akaki, D. Akahoshi, H. Kuwahara

    JOURNAL OF APPLIED PHYSICS　105　(7)　2009/04

    DOI： 10.1063/1.3074510 　

    ISSN： 0021-8979

  74. Persistent and Reversible Phase Control in GdMnO3 near the Phase Boundary Peer-reviewed

    H. Kuwahara, M. Akaki, J. Tozawa, M. Hitomi, K. Noda, D. Akahoshi

    25TH INTERNATIONAL CONFERENCE ON LOW TEMPERATURE PHYSICS (LT25), PART 4　150　2009

    DOI： 10.1088/1742-6596/150/4/042106 　

    ISSN： 1742-6588

  75. Magnetic and dielectric properties of A(2)CoSi(2)O(7) (A=Ca, Sr, Ba) crystals Peer-reviewed

    M. Akaki, J. Tozawa, D. Akahoshi, H. Kuwahara

    25TH INTERNATIONAL CONFERENCE ON LOW TEMPERATURE PHYSICS (LT25), PART 4　150　2009

    DOI： 10.1088/1742-6596/150/4/042001 　

    ISSN： 1742-6588

  76. Magnetodielectric effects in low-dimensional cobalt oxides Peer-reviewed

    M. Akaki, F. Nakamura, D. Akahoshi, H. Kuwahara

    PHYSICA B-CONDENSED MATTER　403　(5-9)　1505-1507　2008/04

    DOI： 10.1016/j.physb.2007.10.178 　

    ISSN： 0921-4526

  77. Control of the ferroelectricity in a metastable state for orthorhombic RMnO3 crystals Peer-reviewed

    K. Noda, M. Akaki, F. Nakamura, D. Akahoshi, H. Kuwahara

    JOURNAL OF PHYSICS-CONDENSED MATTER　19　(14)　145279-145279　2007/04

    DOI： 10.1088/0953-8984/19/14/145279 　

    ISSN： 0953-8984

  78. Internal magnetic field effect on magnetoelectricity in orthorhombic RMnO3 crystals Peer-reviewed

    K. Noda, M. Akaki, F. Nakamura, D. Akahoshi, H. Kuwahara

    JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS　310　(2)　1162-1164　2007/03

    DOI： 10.1016/j.jmmm.2006.10.337 　

    ISSN： 0304-8853

  79. Magnetic-field-induced switching between ferroelectric phases in orthorhombic-distortion-controlled RMnO3 Peer-reviewed

    K. Noda, M. Akaki, T. Kikuchi, D. Akahoshi, H. Kuwahara

    JOURNAL OF APPLIED PHYSICS　99　(8)　2006/04

    DOI： 10.1063/1.2177207 　

    ISSN： 0021-8979

  80. Control of Ferroelectric Phases by 4f Magnetic Moments in Multiferroic RMnO 3 Crystals

    Kuwahara, Hideki, Noda, K., Akaki, M., Nakamura, F., Akahoshi, D.

    MRS Online Proceedings Library Archive　966　34-39　2006

    Publisher: Cambridge University Press

    ISSN： 0272-9172

Show all ︎Show first 5

Misc. 113

  1. Changes in Magnetoelectric Properties of CaBaM4O7(M=Co, Fe) Crystals through Their Twin-Structure Control

    荒井陽光, 白崎巧, 赤木暢, 黒江晴彦, 桑原英樹

    日本物理学会講演概要集(CD-ROM)　78　(2)　2023

    ISSN： 2189-079X

  2. Magnetoelectric properties of ABaM4O7(A=(Ca,Sr), M=(Co,Fe,Mn)) crystals

    白崎巧, 遠藤颯, 松田啓太, 赤木暢, 黒江晴彦, 桑原英樹

    日本物理学会講演概要集(CD-ROM)　76　(1)　2021

    ISSN： 2189-079X

  3. Control of oxygen content and hexagonally twinned structure of CaBaM4O7+δ(M = Co, Fe) single crystals.

    白崎巧, 遠藤颯, 松田啓汰, 小原啓輔, 赤木暢, 黒江晴彦, 桑原英樹

    日本物理学会講演概要集(CD-ROM)　76　(2)　2021

    ISSN： 2189-079X

  4. Low dimensional magnetism of ytterbium insulator YbAgS2

    飯塚亮介, 道村真司, 道村真司, 青木優樹, 佐藤一彦, 小林拓矢, 谷口弘三, 髭本亘, 石崎嵩人, 山本隆文, 大山研司, 赤木暢, 大久保晋, 太田仁, 小坂昌史

    日本物理学会講演概要集(CD-ROM)　76　(1)　2021

    ISSN： 2189-079X

  5. Electron spin resonance in CuFeO2 under external pressure

    赤木暢, 櫻井敬博, 安谷佳将, 竹原良祐, 木田孝則, 森川悦司, 鳴海康雄, 萩原政幸, 金道浩一, 木村尚次郎, 大久保晋, 太田仁

    日本物理学会講演概要集(CD-ROM)　75　(2)　2020

    ISSN： 2189-079X

  6. パルス強磁場下超音波計測によるBa2CuGe2O7の四極子-歪み相互作用

    栗原 綾佑, 三宅 厚志, 徳永 将史, 赤木 暢, 萩原 政幸, 桑原 英樹

    第74回日本物理学会講演概要集　2　2038-2038　2019/03

    DOI： 10.11316/jpsgaiyo.74.1.0_2038 　

  7. パルス強磁場を用いた圧力下ESR装置の開発

    櫻井敬博, 奥藤涼介, 赤木暢, 木田孝則, 萩原政幸, 大久保晋, 太田仁

    日本物理学会講演概要集(CD-ROM)　74　(2)　2019

    ISSN： 2189-079X

  8. LC共振回路を用いた多重極限環境下物性測定装置の開発

    木田孝則, 二本木克旭, 田原大夢, 赤木暢, 鳴海康雄, 萩原政幸

    日本物理学会講演概要集(CD-ROM)　74　(2)　2019

    ISSN： 2189-079X

  9. S=1/2カゴメ格子反強磁性体Ca‐kapellasiteの圧力下の磁性

    鈴木哲平, 齋藤佑, 原茂生, 櫻井敬博, 大久保晋, 太田仁, 赤木暢, 鳴海康雄, 萩原政幸, 吉田紘行

    日本物理学会講演概要集(CD-ROM)　73　(2)　ROMBUNNO.9aPS‐65-513　2018/09/21

    Publisher: The Physical Society of Japan

    DOI： 10.11316/jpsgaiyo.73.2.0_513 　

    ISSN： 2189-079X

  10. CaBaM4O7(M=(Co,Fe))単結晶の磁場(電場)誘起電気分極(磁化)の極性依存性 II

    野田正亮, 赤木暢, 黒江晴彦, 桑原英樹

    日本物理学会講演概要集(CD-ROM)　73　(2)　ROMBUNNO.9aPS‐101　2018/09/21

    ISSN： 2189-079X

  11. Sr2CoB2O7(B=Si,Ge)の磁気異方性と磁気励起

    赤木暢, ROMHANYI J, PENC K, 萩原政幸

    日本物理学会講演概要集(CD-ROM)　73　(2)　ROMBUNNO.10aB204‐3-1506　2018/09/21

    Publisher: The Physical Society of Japan

    DOI： 10.11316/jpsgaiyo.73.2.0_1506 　

    ISSN： 2189-079X

  12. ベンゾチアゾールおよび縮環ピロールからなる2座配位子を有する単核四面体型Co(II)錯体の遅い磁気緩和

    石崎聡晴, 鹿毛悠冬, 神岡美咲, 福田貴光, 赤木暢, 清水宗治, 萩原政幸, 古田弘幸, 石川直人

    錯体化学会討論会講演要旨集　68th　216　2018/07/10

  13. Sr2CoGe2O7におけるスピン四極子励起の観測(実験)

    赤木暢, 吉澤大智, 奥谷顕, 木田孝則, ROMHANYI J, PENC K, 萩原政幸

    日本物理学会講演概要集(CD-ROM)　73　(1)　ROMBUNNO.25aK304‐1-1172　2018/03/23

    Publisher: The Physical Society of Japan

    DOI： 10.11316/jpsgaiyo.73.1.0_1172 　

    ISSN： 2189-079X

  14. マイクロ波領域におけるCsCuCl3の磁気キラル二色性 II

    中川直己, 阿部伸行, 近江毅志, 木村尚次郎, 赤木暢, 萩原政幸, ZACCARRO J, GAUTIER‐LUNEAU I, LUNEAU D, 高阪勇輔, 井上克也, 秋光純, 徳永祐介, 有馬孝尚

    日本物理学会講演概要集(CD-ROM)　73　(1)　ROMBUNNO.25aK503‐8　2018/03/23

    ISSN： 2189-079X

  15. CaBaM4O7(M=Co,Fe)単結晶の磁場(電場)誘起電気分極(磁化)の極性依存性

    野田正亮, 小田涼佑, 赤木暢, 黒江晴彦, 桑原英樹

    日本物理学会講演概要集(CD-ROM)　73　(1)　ROMBUNNO.22pPSA‐48　2018/03/23

    ISSN： 2189-079X

  16. High-field Magnetization and ESR Measurements of the Helical-honeycomb Antiferromagnet α-Cu2V2O7

    Sawada Yuya, Nomoto Tetsuya, Okutani Akira, Akaki Mitsuru, Narumi Yasuo, Matan Kittiwit, Hagiwara Masayuki

    Meeting Abstracts of the Physical Society of Japan　73　(0)　608-608　2018

    Publisher: The Physical Society of Japan

    DOI： 10.11316/jpsgaiyo.73.2.0_608 　

    ISSN： 2189-079X

  17. High field and high frequency ESR of the strongly frustrated S=1/2 dimerized magnet Ba2CoSi2O6Cl2

    栗田伸之, 赤木暢, 奥谷顕, 萩原政幸, 田中秀数

    電子スピンサイエンス学会年会講演要旨集　56th　42‐43　2017/11/02

  18. Electric spin dipole resonance in the spin gap system KCuCl3

    木村尚次郎, 松本正茂, 赤木暢, 萩原政幸, 金道浩一, 田中秀数

    電子スピンサイエンス学会年会講演要旨集　56th　46‐47　2017/11/02

  19. Magnetic Structure and Dielectric State in the Multiferroic Ca2CoSi2O7 Peer-reviewed

    Minoru Soda, Shohei Hayashida, Toshiya Yoshida, Mitsuru Akaki, Masayuki Hagiwara, Maxim Avdeev, Oksana Zaharko, Takatsugu Masuda

    JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN　86　(6)　064703-064703　2017/06

    DOI： 10.7566/JPSJ.86.064703 　

    ISSN： 0031-9015

  20. 磁性研究のための強磁場下物性測定装置開発の現状と将来展望

    萩原政幸, 赤木暢, 木田孝則, 鳴海康雄

    日本物理学会講演概要集(CD-ROM)　72　(1)　ROMBUNNO.17pC‐PS‐32-1110　2017/03/21

    Publisher: The Physical Society of Japan

    DOI： 10.11316/jpsgaiyo.72.1.0_1110 　

    ISSN： 2189-079X

  21. 多目的パルス強磁場実験装置開発と強相関電子系への応用

    鳴海康雄, 木田孝則, 赤木暢, 萩原政幸

    日本物理学会講演概要集(CD-ROM)　72　(1)　ROMBUNNO.20aC‐PS‐35　2017/03/21

    ISSN： 2189-079X

  22. 高強度遠赤外光源を用いた圧力下電子スピン共鳴装置の開発

    高田篤, 木田孝則, 赤木暢, 櫻井敬博, 大木瑛登, 太田仁, 光藤誠太郎, 藤井裕, 小川勇, 出原敏孝, 萩原政幸

    日本物理学会講演概要集(CD-ROM)　72　(1)　ROMBUNNO.17pC‐PS‐30　2017/03/21

    ISSN： 2189-079X

  23. NMR study on the quasi one-dimensional antiferromagnet BaCo2Si2O7 III

    Uesugi R, Akaki M, Hagiwara M, Kuwahara H, Goto T

    Meeting Abstracts of the Physical Society of Japan　72　(0)　1120-1120　2017

    Publisher: The Physical Society of Japan

    More details Close

    &lt;p&gt;1次元磁性体BaCo_2_Si_2_O_7_は、二価のCoイオンを含み、CoO_4_四面体がc軸方向に一次元鎖を形成していることが知られており、TN=21K以下で弱強磁性をともなったIsing型反強磁性体であるといわれている。さらに、容易軸に磁場印加すると、14T付近で大きな磁化ジャンプが見られ、これは大きな磁気異方性のためであると思われている。我々は、^29^Siと^59^CoのNMRで得られたスペクトル解析を用いて、ミクロな磁性について研究した。&lt;/p&gt;

  24. Pulsed high-field ESR in Ca2CoSi2O7

    Akaki M, Hagiwara M

    Meeting Abstracts of the Physical Society of Japan　72　(0)　1129-1129　2017

    Publisher: The Physical Society of Japan

    More details Close

    &lt;p&gt;オケルマナイト構造を持つA_2_CoB_2_O_7_（A=Ca,Sr,Ba,B=Si,Ge）は磁気誘起の電気分極を持つマルチフェロイック物質である。低温で超格子構造を持つCa_2_CoSi_2_O_7_は異方性が小さく、c軸方向に磁場印加時に20-50Tの範囲で飽和磁化の85%程度の磁化プラトーを持つなど特異な磁化過程を示す。本研究では、Ca_2_CoSi_2_O_7_において電子スピン共鳴実験から、その電気磁気特性を調べた。&lt;/p&gt;

  25. Change of Magnetoelectric Properties induced by Magnetic Phase Transition in CaBaM4O7(M=Co,Fe) Single Crystals II

    Oda R, Noda M, Ebukuro Y, Noda T, Akaki M, Kuroe H, Kuwahara H

    Meeting Abstracts of the Physical Society of Japan　72　(0)　1130-1130　2017

    Publisher: The Physical Society of Japan

    More details Close

    &lt;p&gt;CaBaCo_4_O_7_とCaBaFe_4_O_7_は同じ空間群に属し、室温で自発電気分極を持ち、64K(Co),275K(Fe)で異なる磁気構造を持つフェリ磁性転移が起きる。この磁気転移に伴って電気分極の変化が生じるが、そのメカニズムは明らかでない。本研究ではCaBaM_4_O_7_(M=Co,Fe)単結晶を作製し、磁気転移に伴う結晶構造の変化や、異方性を考慮した電場（磁場）下における磁化（電気分極）を調べ、両者を比較した結果を報告する。&lt;/p&gt;

  26. High field and high frequency ESR measurement of the fully frustrated dimerized quantum magnet Ba2CoSi2O6Cl2

    Kurita N, Akaki M, Okutani A, Hagiwara M, Tanaka H

    Meeting Abstracts of the Physical Society of Japan　72　(0)　1073-1073　2017

    Publisher: The Physical Society of Japan

    More details Close

    &lt;p&gt;Ba2CoSi2O6Cl2は、我々のグループで開拓を行った新規S=1/2スピンダイマー系磁性体である。これまで単結晶を用いた強磁場磁化測定及び非弾性中性子散乱測定を行い、それぞれ飽和磁化の1/2 に階段状の磁化プラトーを示すこと及び磁気励起に分散が全くないことを明らかにしてきた。これらの結果は、ダイマー間相互作用にほぼ完全なフラストレーションが存在し、臨界磁場以上でマグノンが量子結晶化していることを示している。今回我々はパルスマグネットと遠赤外分子レーザーを用いたBa2CoSi2O6Cl2の強磁場高周波電子スピン共鳴測定を行ったので、その結果について報告を行う。&lt;/p&gt;

  27. High magnetic field properties of a frustrated honeycomb antiferromagnet Ba2NiTeO6

    Ono T, Hagiwara M, Yamaguchi H, Hosokoshi Y, Kasatani K, Asai S, Souda M, Masuda T, Matsuo A, Kindo K, Okutani A, Akaki M

    Meeting Abstracts of the Physical Society of Japan　71　(0)　790-790　2016

    Publisher: The Physical Society of Japan

    DOI： 10.11316/jpsgaiyo.71.2.0_790 　

    More details Close

    &lt;p&gt;三方晶の結晶構造を持つBa2NiTeO6は、ab面内でNiイオンが二重層状の三角格子を組んでいるとともに、同一三角格子面内と別の三角格子面間の相互作用を両方考えると、この系は次近接相互作用の強いハニカム格子反強磁性体と見なせることがわかってきた。現在、この系で予想される磁場中相転移を探索すべく強磁場物性を調べているので、これまでの成果を報告する。&lt;/p&gt;

  28. 19aPS-24 Magnetic and Dielectric Properties of ABaM_4O_7 (A=(Ca,Y), M=(Co,Fe)) Single Crystals III

    Oda R, Kajihara R, Nishina K, Akaki M, Kuroe H, Kuwahara H

    Meeting Abstracts of the Physical Society of Japan　71　(0)　1031-1031　2016

    Publisher: The Physical Society of Japan

    DOI： 10.11316/jpsgaiyo.71.1.0_1031 　

    ISSN： 2189-079X

  29. 19aPS-25 Magnetic Structure in Multiferroics Ca_2CoSi_2O_7

    Soda Minoru, Yoshida Toshiya, Akaki Mitsuru, Hagiwara Masayuki, Zaharko Oksana, Avdeev Maxim, Itoh Shinichi, Yokoo Tetsuya, Masuda Takatsugu

    Meeting Abstracts of the Physical Society of Japan　71　(0)　1032-1032　2016

    Publisher: The Physical Society of Japan

    DOI： 10.11316/jpsgaiyo.71.1.0_1032 　

    ISSN： 2189-079X

  30. 19aPS-26 NMR study on the quasi one-dimensional antiferromagnet BaCo_2Si_2O_7

    Uesugi R, Akaki M, Hagiwara M, Kuwahara H, Goto T

    Meeting Abstracts of the Physical Society of Japan　71　(0)　1033-1033　2016

    Publisher: The Physical Society of Japan

    DOI： 10.11316/jpsgaiyo.71.1.0_1033 　

    ISSN： 2189-079X

  31. 21aCC-9 Magnetic and dielectric properties of a S=1/2 quasi-2D chiral-lattice antiferromagnet A(TiO)Cu_4(PO_4)_4(A=Ba, Sr)

    Sera M, Nozue Y, Kimura T, Kimura K, Akaki M, Hagiwara M, Miyake A, Tokunaga M, Matsuo A, Kindo K, Nakano T

    Meeting Abstracts of the Physical Society of Japan　71　(0)　1849-1849　2016

    Publisher: 一般社団法人 日本物理学会

    DOI： 10.11316/jpsgaiyo.71.2.0_1849 　

  32. 21pCC-9 Development of a measurement apparatus of magnetic susceptibility in pulsed high magnetic fields using a proximity detector oscillator

    Kida T, Tahara T, Ohashi S, Akaki M, Hagiwara M

    Meeting Abstracts of the Physical Society of Japan　71　(0)　1277-1277　2016

    Publisher: The Physical Society of Japan

    DOI： 10.11316/jpsgaiyo.71.1.0_1277 　

    ISSN： 2189-079X

  33. 22aAU-5 Pulsed high-field ESR measurement of Sr_2CoGe_2O_7

    Akaki M, Aoki Y, Okutani A, Yoshizawa D, Kida T, Hagiwara M

    Meeting Abstracts of the Physical Society of Japan　71　(0)　1282-1282　2016

    Publisher: The Physical Society of Japan

    DOI： 10.11316/jpsgaiyo.71.1.0_1282 　

    ISSN： 2189-079X

  34. Magnetic field induced polar phase in the chiral magnet CsCuCl3 Peer-reviewed

    Atsushi Miyake, Jumpei Shibuya, Mitsuru Akaki, Hidekazu Tanaka, Masashi Tokunaga

    PHYSICAL REVIEW B　92　(10)　100406-100406　2015/09

    DOI： 10.1103/PhysRevB.92.100406 　

    ISSN： 1098-0121

    eISSN： 1550-235X

  35. ハイブリッドマグネットで作動する比熱測定装置の開発

    小濱芳允, 望月健生, 赤木暢, 金道浩一

    東北大学金属材料研究所強磁場超伝導材料研究センター年次報告　2014　2015

  36. 21pAH-9 High-field magnetization process of one-dimensional magnet BaCo_2Si_2O_7

    Akaki M, Okutani A, Yoshizawa D, Kuwahara H, Hagiwara M

    Meeting Abstracts of the Physical Society of Japan　70　(0)　1072-1072　2015

    Publisher: The Physical Society of Japan

    DOI： 10.11316/jpsgaiyo.70.1.0_1072 　

    ISSN： 2189-079X

  37. 24aPS-91 Magnetic and Dielectric Properties of ABaM_4O_7(A=(Ca,Y), M=(Co,Fe)) Single Crystals

    Kajihara R, Nishina K, Oda R, Akaki M, Kuwahara H

    Meeting Abstracts of the Physical Society of Japan　70　(0)　2442-2442　2015

    Publisher: The Physical Society of Japan

    DOI： 10.11316/jpsgaiyo.70.1.0_2442 　

    ISSN： 2189-079X

  38. 19aCM-9 Multi-frequency ESR in the quasi one-dimensional frustrated magnet Rb2Cu2Mo3O12

    Yoshizawa D, Morioka T, Akaki M, Fujimura A, Yasui Y, Hagiwara M

    Meeting Abstracts of the Physical Society of Japan　70　(0)　989-989　2015

    Publisher: The Physical Society of Japan

    DOI： 10.11316/jpsgaiyo.70.2.0_989 　

    ISSN： 2189-079X

  39. 19pCM-3 Magnetic and dielectric properties of a new S=1/2 quasi-2D chiral-lattice antiferromagnet

    Sera M, Kimura K, Akaki M, Hagiwara M, Nakano T, Nozue Y, Kimura T

    Meeting Abstracts of the Physical Society of Japan　70　(0)　996-996　2015

    Publisher: The Physical Society of Japan

    DOI： 10.11316/jpsgaiyo.70.2.0_996 　

    ISSN： 2189-079X

  40. 19aPS-64 Magnetic and Dielectric Properties of ABaM_4O_7 (A=(Ca,Y), M=(Co,Fe)) Single Crystals II

    Kajihara R, Nishina K, Oda R, Akaki M, Kuroe H, Kuwahara H

    Meeting Abstracts of the Physical Society of Japan　70　(0)　2442-2442　2015

    Publisher: The Physical Society of Japan

    DOI： 10.11316/jpsgaiyo.70.1.0_2442 　

    ISSN： 2189-079X

  41. 19aPS-65 Electric-field control of magnetic domains in A_2MSi_2O_7 (A=(Sr,Eu), M=(Co,Mn)) crystals

    Nishina K, Kajihara R, Oda R, Akaki M, Kuroe H, Itatani K, Kuwahara H

    Meeting Abstracts of the Physical Society of Japan　70　(0)　2157-2157　2015

    Publisher: The Physical Society of Japan

    DOI： 10.11316/jpsgaiyo.70.2.0_2157 　

    ISSN： 2189-079X

  42. 19aPS-66 Physical properties of akermanite compounds(Ca_<1-x>Sr_x)_2CoSi_2O_7 in high magnetic fields

    Aoki Y, Akaki M, Kida T, Okutani A, Yoshizawa D, Morioka T, Hagiwara M

    Meeting Abstracts of the Physical Society of Japan　70　(0)　2158-2158　2015

    Publisher: The Physical Society of Japan

    DOI： 10.11316/jpsgaiyo.70.2.0_2158 　

    ISSN： 2189-079X

  43. パルス強磁場下におけるFe1+y(Te1-xSx)の磁気弾性効果の研究

    河智史朗, 木原工, 赤木暢, 小濱芳允, 近藤晃弘, 三宅厚志, 徳永将史, 濱田健太朗, 水口佳一, 三浦大介, 高野義彦

    日本物理学会講演概要集　69　(1)　2014

    ISSN： 1342-8349

  44. 27aAF-8 Crystal structure and high-field magnetization process of the distorted kagome antiferromagnet volborthite Cu_3V_2O_7(OH)_2・2H_2O

    Ishikawa H, Hiroi Z, Okamoto Y, Akaki M, Miyake A, Yoshida M, Yamaura J, Kumai R, Murakami Y, Tokunaga M

    Meeting Abstracts of the Physical Society of Japan　69　(0)　470-470　2014

    Publisher: 一般社団法人 日本物理学会

    ISSN： 1342-8349

  45. 27aPS-71 High-field magnetization process and magnetoelectric properties in Ca_2CoSi_2O_7 crystal

    Akaki M., Kohama Y., Kuwahara H., Matsuo A., Kindo K., Tokunaga M.

    Meeting Abstracts of the Physical Society of Japan　69　(0)　491-491　2014

    Publisher: The Physical Society of Japan

    DOI： 10.11316/jpsgaiyo.69.1.3.0_491_2 　

    ISSN： 1342-8349

  46. 27pPSA-46 Magnetoelastic effect of Fe_<1+y>(Te_<1-x>S_x) in pulsed high magnetic field

    Kawachi S., Miura D., Takano Y., Kihara T., Akaki M., Kohama Y., Kondo A., Miyake A., Tokunaga M., Hamada K., Mizuguchi Y.

    Meeting Abstracts of the Physical Society of Japan　69　(0)　574-574　2014

    Publisher: The Physical Society of Japan

    DOI： 10.11316/jpsgaiyo.69.1.3.0_574_1 　

    ISSN： 1342-8349

  47. 27pPSA-71 Magneto-electric Effects of CsCuCl_3 in Pulsed-High Magnetic Fields II

    Shibuya J, Akaki M, Miyake A, Tokunaga M, Tanaka H

    Meeting Abstracts of the Physical Society of Japan　69　(0)　579-579　2014

    Publisher: The Physical Society of Japan

    ISSN： 1342-8349

  48. 7aBJ-2 High field magneto-electric effects of BiFeO_3 single crystals grown by the LD-FZ technique

    Tokunaga M, Akaki M, Miyake A, Ito T, Kuwahara H, Miyahara S, Furukawa N

    Meeting Abstracts of the Physical Society of Japan　69　(0)　326-326　2014

    Publisher: The Physical Society of Japan

    ISSN： 1342-8349

  49. 7aBJ-8 Magneto-electric Effects of CsCuCl_3 in Pulsed-High Magnetic Fields III

    Shibuya J., Akaki M., Kohama Y., Miyake A., Tokunaga M., Tanaka H.

    Meeting Abstracts of the Physical Society of Japan　69　(0)　327-327　2014

    Publisher: The Physical Society of Japan

    DOI： 10.11316/jpsgaiyo.69.2.3.0_327_3 　

    ISSN： 1342-8349

  50. 9aPS-37 Impurity-Doping Effect on Magnetic and Dielectric Properties of CaBaCo_4O_7 Crystals

    Nishina K, Kajihara R, Murakami Y, Kano N, Akaki M, Kuwahara H

    Meeting Abstracts of the Physical Society of Japan　69　(0)　412-412　2014

    Publisher: The Physical Society of Japan

    ISSN： 1342-8349

  51. パルス強磁場下における反強磁性Fe1+yTe1-xSxの磁気抵抗測定

    河智史朗, 赤木暢, 小濱芳允, 徳永将史, 濱田健太朗, 水口佳一, 三浦大介, 高野義彦

    日本物理学会講演概要集　68　(1)　2013

    ISSN： 1342-8349

  52. 27pXY-10 Second order magnetoelectric effect in Ca_2CoSi_2O_7 crystal

    Akaki M, Tokunaga M, Kuwahara H

    Meeting Abstracts of the Physical Society of Japan　68　(0)　660-660　2013

    Publisher: The Physical Society of Japan

    ISSN： 1342-8349

  53. 29aPS-120 Magnetoresistance of the antiferromagnet Fe_<1+y>Te_<1-x>S_x in pulsed high magnetic fields

    Kawachi S., Akaki M., Kohama Y., Tokunage M., Hamada K., Mizuguchi Y., Miura D., Takano Y.

    Meeting Abstracts of the Physical Society of Japan　68　(0)　711-711　2013

    Publisher: The Physical Society of Japan

    DOI： 10.11316/jpsgaiyo.68.1.3.0_711_2 　

    ISSN： 1342-8349

  54. Magneto-electric Effects of CsCuCl_3 in Pulsed-High Magnetic Fields

    Shibuya J, Akaki M, Miyake A, Tokunaga M, Tanaka H

    Meeting Abstracts of the Physical Society of Japan　68　(0)　373-373　2013

    Publisher: The Physical Society of Japan

    ISSN： 1342-8349

  55. Anisotropic Magnetoelectric properties of CaBaCo_4O_7 single crystal II

    Kano N, Akaki M, Kuwahara H

    Meeting Abstracts of the Physical Society of Japan　68　(0)　373-373　2013

    Publisher: The Physical Society of Japan

    ISSN： 1342-8349

  56. 25aAF-7 Magnetic field-temperature phase diagram of multiferroic material (Cu,Zn)_3Mo_2O_9

    Hachiuma S, Ito T, Eisaki H, Hosaka T, Ito R, Akaki M, Kuwahara H, Kuroe H, Sekine T, Hase M, Oka K

    Meeting Abstracts of the Physical Society of Japan　67　(0)　508-508　2012

    Publisher: The Physical Society of Japan

    ISSN： 1342-8349

  57. 25aPS-44 Magnetic relaxor in ordered-perovskite RBaMn_2O_6 introduced local disorder

    Idei Y, Akaki M, Akahoshi D, Itatani K, Kuwahara H

    Meeting Abstracts of the Physical Society of Japan　67　(0)　603-603　2012

    Publisher: The Physical Society of Japan

    ISSN： 1342-8349

  58. 25aPS-48 Colossal magnetoresistance induced by B-site substitution for Nd_<0.45>Sr_<0.55>MnO_3

    Mashimo S, Nakamura M, Akaki M, Kuwahara H

    Meeting Abstracts of the Physical Society of Japan　67　(0)　604-604　2012

    Publisher: The Physical Society of Japan

    ISSN： 1342-8349

  59. 26pAD-5 Electronic structuter in Sr_3Fe_<2-x>Co_xO_<7-δ>

    Naito R, Ikenaga H, Kumigasira H, Sakai E, Saitoh T, Nakano Y, Okawa M, Wadachi D, Nakamura R, Tozawa J, Akagi N, Kuwahara H, Sugiyama T

    Meeting Abstracts of the Physical Society of Japan　67　(0)　810-810　2012

    Publisher: 一般社団法人 日本物理学会

    ISSN： 1342-8349

  60. 18aPSA-26 Change of magnetic properties by substitution for Fe-site in Fe_2Mo_3O_8

    Watanabe T, Akaki M, Akahoshi D, Kuwahara H

    Meeting Abstracts of the Physical Society of Japan　67　(0)　384-384　2012

    Publisher: The Physical Society of Japan

    ISSN： 1342-8349

  61. 25aED-7 High-magnetic-field dependence of the electric polarization in Sr_2CoSi_2O_7 crystal

    Akaki M, Ehara M, Iwamoto H, Oka K, Tokunaga M, Kuwahara H

    Meeting Abstracts of the Physical Society of Japan　66　(0)　522-522　2011

    Publisher: The Physical Society of Japan

    ISSN： 1342-8349

  62. 25pPSB-72 Magnetoelectric properties in 3d transition metal oxide wish tetrahedral structure

    Iwamoto H, Ehara M, Akaki M, Kuwahara H

    Meeting Abstracts of the Physical Society of Japan　66　(0)　581-581　2011

    Publisher: The Physical Society of Japan

    ISSN： 1342-8349

  63. 25pPSB-73 Change of physical properties of Sr_3Fe_<2-x>Co_xO_<7-δ> by the control of oxygen vacancy II

    Nakamura R, Tozawa J, Akaki M, Akahoshi D, Itatani K, Kuwahara H

    Meeting Abstracts of the Physical Society of Japan　66　(0)　581-581　2011

    Publisher: The Physical Society of Japan

    ISSN： 1342-8349

  64. 21aPS-92 Electric Properties of Quasi-One Dimensional Antiferromagnet Cu_3Mo_2O_9 II

    Kuroe H., Eisaki H., Hosaka T., Hachiuma S., Sekine T., Akagi M., Kuwahara H., Hase M., Oka K., Ito T.

    Meeting Abstracts of the Physical Society of Japan　66　(0)　393-393　2011

    Publisher: The Physical Society of Japan

    DOI： 10.11316/jpsgaiyo.66.2.3.0_393_4 　

    ISSN： 1342-8349

  65. 21pGB-8 Temperature change of the spin driven electric polarization in Sr_2CoSi_2O_7 crystal under high-magnetic-field

    Akaki M, Ehara M, Iwamoto H, Kihara T, Tokunaga M, Kuwahara H

    Meeting Abstracts of the Physical Society of Japan　66　(0)　473-473　2011

    Publisher: The Physical Society of Japan

    ISSN： 1342-8349

  66. 22aPS-61 x dependence of the anisotropic magneto-transport properties of Sr_3Fe_<2-x>Co_xO_<7-δ> single crystals

    Nakamura R, Tozawa J, Akaki M, Akahoshi D, Itatani K, Kuwahara H

    Meeting Abstracts of the Physical Society of Japan　66　(0)　523-523　2011

    Publisher: The Physical Society of Japan

    ISSN： 1342-8349

  67. 22aPS-62 Anisotropies Magnetoelectric property of CaBaCo_4O_7 single crystal

    Iwamoto H, Tadokoro T, Ehara M, Akaki M, Kuwahara H

    Meeting Abstracts of the Physical Society of Japan　66　(0)　523-523　2011

    Publisher: The Physical Society of Japan

    ISSN： 1342-8349

  68. 20aPS-113 Magnetic characteristic change by Zn-substitution for Fe in Fe_2Mo_3O_8

    Nakayama S, Nakamura R, Akaki M, Akahoshi D, Kuwahara H

    Meeting Abstracts of the Physical Society of Japan　65　(0)　546-546　2010

    Publisher: The Physical Society of Japan

    ISSN： 1342-8349

  69. 20pPSA-45 Magnetoelectric effect in layered oxide CaBaCo_4O_7

    Ehara M, Onoue S, Hitomi M, Akaki M, Akahoshi D, Kuwahara H

    Meeting Abstracts of the Physical Society of Japan　65　(0)　574-574　2010

    Publisher: The Physical Society of Japan

    ISSN： 1342-8349

  70. 21aGF-6 Magnetoelectric Properties of TbBaMn_2O_<5+δ> Perovskite with Oxygen Vacancy

    Akaki M, Miyauchi Y, Ehara M, Akahoshi D, Itatani K, Kuwahara H

    Meeting Abstracts of the Physical Society of Japan　65　(0)　597-597　2010

    Publisher: The Physical Society of Japan

    ISSN： 1342-8349

  71. 23pHS-3 Measurement of Dielectric Constant in Magnetic Field of Distorted Triangular Lattice RbCoBr_3

    Nishiwaki Y, Kuroe H, Akaki M, Kuwahara H, Sekine T, Tokunaga M, Kato T

    Meeting Abstracts of the Physical Society of Japan　65　(0)　1013-1013　2010

    Publisher: The Physical Society of Japan

    ISSN： 1342-8349

  72. 23aWJ-10 Substitution Effect of Rare Earth for Ba-site in Ordered-Perovskite RBaMn_2O_6

    Miyauchi Y, Akaki M, Akahoshi D, Itatani K, Kuwahara H

    Meeting Abstracts of the Physical Society of Japan　65　(0)　456-456　2010

    Publisher: The Physical Society of Japan

    ISSN： 1342-8349

  73. 24aPS-10 Neutron Scattering Study of Magnetic Structure of Nd_<0.33>Sr_<1.67>MnO_4

    Oohara Y, Kubota M, Akagi M, Akahoshi D, Kuwahara H

    Meeting Abstracts of the Physical Society of Japan　65　(0)　555-555　2010

    Publisher: The Physical Society of Japan

    ISSN： 1342-8349

  74. 24aPS-12 Control of orbital-ordered phases of heavily doped Nd_<1-x>Sr_xMnO_3 (x>0.5) by impurity substitution of B-site II

    Izuchi Y, Mashimo S, Akaki M, Akahoshi D, Itatani K, Kuwahara H

    Meeting Abstracts of the Physical Society of Japan　65　(0)　556-556　2010

    Publisher: The Physical Society of Japan

    ISSN： 1342-8349

  75. 24pXP-7 Change of magnetic properties by substitution of transition-metal in Fe_2Mo_3O_8

    Nakayama S, Watanabe T, Nakamura R, Akaki M, Akahoshi D, Kuwahara H

    Meeting Abstracts of the Physical Society of Japan　65　(0)　576-576　2010

    Publisher: The Physical Society of Japan

    ISSN： 1342-8349

  76. 25pWB-11 Effect of structural phase transition and disorder on the thermoelectric properties of Sr_<1-x>Ca_xTi_<1-y>Nb_yO_3 single crystals

    Fukuyado J, Narikiyo K, Okuda T, Akagi T, Kuwahara H

    Meeting Abstracts of the Physical Society of Japan　65　(0)　598-598　2010

    Publisher: The Physical Society of Japan

    ISSN： 1342-8349

  77. 27pPSB-32 Pressure Effects on Magnetization of the Low-Dimensional Magnet Cu_3Mo_2O_9

    Shindo Y., Hamasaki T., Kuroe H., Sekine T., Akagi M., Itatani S., Kuwahara H., Hase M.

    Meeting Abstracts of the Physical Society of Japan　64　(0)　467-467　2009

    Publisher: The Physical Society of Japan

    DOI： 10.11316/jpsgaiyo.64.1.3.0_467_2 　

    ISSN： 1342-8349

  78. 27aTA-3 Control of electric polarization domain by 4f magnetic moment of rare earth in RMnO_3

    Akaki M, Hitomi M, Akahoshi D, Kuwahara H

    Meeting Abstracts of the Physical Society of Japan　64　(0)　519-519　2009

    Publisher: The Physical Society of Japan

    ISSN： 1342-8349

  79. 27pPSA-36 Control of ferroelectric phase by lattice randomness in orthorhombic RMnO_3

    Hitomi M, Ehara M, Akaki M, Akahoshi D, Kuwahara H

    Meeting Abstracts of the Physical Society of Japan　64　(0)　575-575　2009

    Publisher: The Physical Society of Japan

    ISSN： 1342-8349

  80. 28pTL-2 Charge/Orbital ordering in layered manganite Nd2-xSrMnO4 studied by soft X-ray scattering

    Kubota M, Oohara Y, Kotani Y, Ono K, Akagi M, Nakamura F, Fukushima S, Akahoshi D, Kuwahara H

    Meeting Abstracts of the Physical Society of Japan　64　(0)　621-621　2009

    Publisher: The Physical Society of Japan

    ISSN： 1342-8349

  81. 28pTL-9 Temperature-dependent changes in ARPES spectra of layered Mn oxides

    Yoshizawa Noriki, Ono Kanta, Maeda Yasuhiro, Saitoh Tomohiko, Masa Akagi, Akahoshi Daisuke, Kuwahara Hideki, Aiura Yoshihiro, Kotani Yoshinori, Kubota Masato

    Meeting Abstracts of the Physical Society of Japan　64　(0)　623-623　2009

    Publisher: The Physical Society of Japan

    ISSN： 1342-8349

  82. 26aPS-48 R-Site Randomness Effect in Ordered-Perovskite RBaMn_2O_6

    Miyauchi Y, Akaki M, Akahoshi D, Kuwahara H

    Meeting Abstracts of the Physical Society of Japan　64　(0)　488-488　2009

    Publisher: The Physical Society of Japan

    ISSN： 1342-8349

  83. 26aPS-49 Control of orbital ordered phases of heavily doped Nd_<1-x>Sr_xMnO_3(x>0.5) by impurity substitution of B-site

    Izuchi Y, Iwamoto H, Akaki M, Akahoshi D, Itatani K, Kuwahara H

    Meeting Abstracts of the Physical Society of Japan　64　(0)　489-489　2009

    Publisher: The Physical Society of Japan

    ISSN： 1342-8349

  84. 27aRL-3 Coexistence of ferroelectric phases (P//a and P//c) in Eu_<1-y>Y_yMnO_3(0.5<y)

    Hitomi M, Ehara M, Akaki M, Kuroe H, Sekine T, Akahoshi D, Kuwahara H

    Meeting Abstracts of the Physical Society of Japan　64　(0)　536-536　2009

    Publisher: The Physical Society of Japan

    ISSN： 1342-8349

  85. 26aXB-7 Femtosecond reflection spectroscopy in NdMnO_3

    Tanaka S, Kuwahara H, Miyata T, Okimoto Y, Kurashima M, Ishikawa T, Onda K, Koshihara S, Akaki M, Akahoshi D

    Meeting Abstracts of the Physical Society of Japan　64　(0)　633-633　2009

    Publisher: The Physical Society of Japan

    ISSN： 1342-8349

  86. ARPESにおけるLa1.2Sr1.8Mn2O7のスペクトルの温度変化

    前田康博, 吉沢紀季, 齋藤智彦, 赤木暢, 赤星大介, 桑原英樹, 相浦義弘, 小谷佳範, 久保田正人, 小野寛太

    PFシンポジウム要旨集　26th　202　2009

  87. 軟X線共鳴散乱を用いた強相関電子系遷移金属酸化物の電荷・軌道秩序研究

    久保田正人, 大原泰明, 小谷佳範, 小野寛太, 赤木暢, 中村文暁, 福島瞬, 赤星大介, 桑原英樹

    PFシンポジウム要旨集　26th　287　2009

  88. Nd1-xSrxMnO3結晶の高ドープ域におけるB‐site不純物置換効果

    田先雷太, 福島瞬, 赤木暢, 山本啓太, 赤星大介, 桑原英樹

    日本物理学会講演概要集　63　(2)　531-531　2008/08/25

    Publisher: The Physical Society of Japan (JPS)

    ISSN： 1342-8349

  89. ペロブスカイト型酸化物における反射率の時間変化 II

    田先雷太, 幸山和晃, 赤木暢, 赤星大介, 江馬一弘, 桑原英樹

    日本物理学会講演概要集　63　(1)　579-579　2008/02/29

    Publisher: The Physical Society of Japan (JPS)

    ISSN： 1342-8349

  90. 斜方晶Eu0.8Y0.2MnO3結晶における弱強磁性強誘電状態

    赤木暢, 中村文暁, 赤星大介, 桑原英樹

    日本物理学会講演概要集　63　(1)　516　2008/02/29

    ISSN： 1342-8349

  91. Nd0.33Sr1.66MnO4の磁気構造

    大原泰明, 久保田正人, 赤木暢, 中村文暁, 福島瞬, 赤星大介, 桑原英樹

    日本物理学会講演概要集　63　(1)　641　2008/02/29

    ISSN： 1342-8349

  92. 21aQH-1 Field dependence of Neel order in the low-dimensional magnet Cu_3Mo_2O_9

    Hamasaki T., Kuroe H., Sekine T., Akaki M., Kuwahara H., Hase M.

    Meeting Abstracts of the Physical Society of Japan　63　(0)　375-375　2008

    Publisher: The Physical Society of Japan

    DOI： 10.11316/jpsgaiyo.63.2.3.0_375_3 　

    ISSN： 1342-8349

  93. 21pQF-2 B-site substitution effect of heavily doped Nd_<1-x>Sr_xMnO_3

    Tasaki R, Fukushima S, Akaki M, Yamamoto K, Akahoshi D, Kuwahara H

    Meeting Abstracts of the Physical Society of Japan　63　(0)　531-531　2008

    Publisher: The Physical Society of Japan

    ISSN： 1342-8349

  94. 24aPS-37 Time Dependence of Reflectivity of Perovskite Oxides II

    Tasaki R, Kouyama K, Akaki M, Akahoshi D, Ema K, Kuwahara H

    Meeting Abstracts of the Physical Society of Japan　63　(0)　579-579　2008

    Publisher: The Physical Society of Japan

    ISSN： 1342-8349

  95. 23aYB-2 Weak-ferromagnetic and ferroelectric state in orthorhombic Eu_<0.8>Y_<0.2>MnO_3 crystal

    Akaki M, Nakamura F, Akahoshi D, Kuwahara H

    Meeting Abstracts of the Physical Society of Japan　63　(0)　516-516　2008

    Publisher: The Physical Society of Japan

    ISSN： 1342-8349

  96. 26aYB-9 Neutron Diffraction Study of Magnetic Structure of Nd_<0.33>Sr_<1.66>MnO_4

    Oohara Y, Kubota M, Akaki M, Nakamura F, Fukushima S, Akahoshi D, Kuwahara H

    Meeting Abstracts of the Physical Society of Japan　63　(0)　641-641　2008

    Publisher: The Physical Society of Japan

    ISSN： 1342-8349

  97. 21aQH-1 Field dependence of Neel order in the low-dimensional magnet Cu_3Mo_2O_9

    Hamasaki T., Kuroe H., Sekine T., Akaki M., Kuwahara H., Hase M.

    Meeting Abstracts of the Physical Society of Japan　63　(0)　375-375　2008

    Publisher: The Physical Society of Japan

    DOI： 10.11316/jpsgaiyo.63.2.3.0_375_3 　

    ISSN： 1342-8349

  98. 斜方晶RMnO3のAタイプ反強磁性相近傍における強誘電相の外場制御 II

    中村文暁, 赤木暢, 野田耕平, 赤星大介, 桑原英樹

    日本物理学会講演概要集　62　(2)　537-537　2007/08/21

    Publisher: The Physical Society of Japan (JPS)

    ISSN： 1342-8349

  99. ペロブスカイト型酸化物における反射率の時間変化

    田先雷太, 幸山和晃, 赤木暢, 赤星大介, 江馬一弘, 桑原英樹

    日本物理学会講演概要集　62　(2)　536-536　2007/08/21

    Publisher: The Physical Society of Japan (JPS)

    ISSN： 1342-8349

  100. 低次元磁性体Ca2CoSi2O7結晶における磁場誘起焦電性

    赤木暢, 中村文暁, 赤星大介, 桑原英樹

    日本物理学会講演概要集　62　(2)　556-556　2007/08/21

    Publisher: The Physical Society of Japan (JPS)

    ISSN： 1342-8349

  101. 19aPS-63 Control of magnetoelectric properties in orthorhombic RMnO_3 crystals by hydrostatic pressure

    Nakamura F, Akaki M, Shiraishi R, Noda K, Akahoshi D, Kuwahara H

    Meeting Abstracts of the Physical Society of Japan　62　(0)　570-570　2007

    Publisher: The Physical Society of Japan

    ISSN： 1342-8349

  102. 18aWG-10 Magnetoelectric properties in A_2CoSi_2O_7 crystals with low dimensional structures

    Akaki M, Nakamura F, Shiraishi R, Noda K, Akahoshi D, Kuwahara H

    Meeting Abstracts of the Physical Society of Japan　62　(0)　491-491　2007

    Publisher: The Physical Society of Japan

    ISSN： 1342-8349

  103. 18aWG-9 Rare-earth moment effect on magnetoelectricity in orthorhorabic RMaO_3 crystals

    Noda K, Akaki M, Nakamura F, Shiraishi R, Akahoshi D, Kuwahara H

    Meeting Abstracts of the Physical Society of Japan　62　(0)　491-491　2007

    Publisher: The Physical Society of Japan

    ISSN： 1342-8349

  104. 21pWH-8 Magnetic-field-induced pyroelectricity in Ca_2CoSi_2O_7 crystal with low dimensional structure

    Akaki M, Nakamura F, Akahoshi D, Kuwahara H

    Meeting Abstracts of the Physical Society of Japan　62　(0)　556-556　2007

    Publisher: The Physical Society of Japan

    ISSN： 1342-8349

  105. 21aPS-88 External control of the ferroelectricity near the A-type antiferromagnetic phase in the orthorhombic RMnO_3 II

    Nakamura F, Akaki M, Noda K, Akahoshi D, Kuwahara H

    Meeting Abstracts of the Physical Society of Japan　62　(0)　537-537　2007

    Publisher: The Physical Society of Japan

    ISSN： 1342-8349

  106. 21aPS-83 Time dependence of Reflectivity of Perovskite Oxides

    Tasaki R, Kouyama K, Akaki M, Akahoshi D, Ema K, Kuwahara H

    Meeting Abstracts of the Physical Society of Japan　62　(0)　536-536　2007

    Publisher: The Physical Society of Japan

    ISSN： 1342-8349

  107. 27aRA-4 4f internal-magnetic-field effect on magnetoelectricity in orthorhombic RMnO_3 Crystals

    Noda K, Akaki M, Kikuchi T, Akahoshi D, Kuwahara H

    Meeting Abstracts of the Physical Society of Japan　61　(0)　505-505　2006

    Publisher: The Physical Society of Japan

    ISSN： 1342-8349

  108. 27aPS-55 Magnetoelectric effect in Gd_<1-y>Tb_yMnO_3 crystals

    Akaki M, Noda K, Kikuchi T, Akahoshi D, Kuwahara H

    Meeting Abstracts of the Physical Society of Japan　61　(0)　532-532　2006

    Publisher: The Physical Society of Japan

    ISSN： 1342-8349

  109. 24aPS-45 Magnetoelectric properties in cobalt oxides with low dimensional structures

    Akaki M, Noda K, Nakamura F, Akahoshi D, Kuwahara H

    Meeting Abstracts of the Physical Society of Japan　61　(0)　450-450　2006

    Publisher: The Physical Society of Japan

    ISSN： 1342-8349

  110. 23aPS-89 Magnetization under high pressures and magnetic specific heat in Rb_2Cu_2Mo_3O_<12> with a one-dimensional competing interactions

    Hamasaki T., Akaki M., Kuroe H., Kuwahara H., Sekine T., Hase M., Maeshima N., Saiga Y., Uwatoko Y.

    Meeting Abstracts of the Physical Society of Japan　61　(0)　335-335　2006

    Publisher: The Physical Society of Japan

    DOI： 10.11316/jpsgaiyo.61.2.3.0_335_2 　

    ISSN： 1342-8349

  111. 23aZQ-3 External field control of the ferroelectricity near the A-type antiferromagnetic phase in the orthorhombic RMnO_3

    Noda K, Akaki M, Nakamura F, Shiraishi R, Akahoshi D, Kuwahara H

    Meeting Abstracts of the Physical Society of Japan　61　(0)　386-386　2006

    Publisher: The Physical Society of Japan

    ISSN： 1342-8349

  112. 27pWE-1 Bandwidth control effects on dielectric properties of RMaO_3 crystals

    Noda Kohei, Nakamura shigeru, Akaki Mitsuru, Kuwahara Hideki

    Meeting Abstracts of the Physical Society of Japan　60　(0)　613-613　2005

    Publisher: The Physical Society of Japan

    ISSN： 1342-8349

  113. 20aYH-4 Randomness effets of orthorhombic distortion on dielectric properties of RMnO_3 crystals

    Noda Kohei, Akaki Mitsuru, Kikuchi Toshiyuki, Akahoshi Daisuke, Kuwahara Hideki

    Meeting Abstracts of the Physical Society of Japan　60　(0)　423-423　2005

    Publisher: The Physical Society of Japan

    ISSN： 1342-8349

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Industrial Property Rights 1

  1. 磁性イオンを含むオケルマナイト構造を有する電気磁気効果材料を用いた電気磁気効果素子

    桑原 英樹, 赤木 暢

    特許第5957195号

    Property Type: Patent

Research Projects 8

  1. 多自由度相関磁気熱量効果と非相反熱伝導及び新規磁気冷凍システムの開拓

    赤木 暢

    Offer Organization: 熱・電気エネルギー技術財団

    System: 第30回研究助成

    Institution: 東北大学 金属材料研究所

    2022/12 - 2023/12

  2. Single domain crystal growth and pulsed high magnetic field measurements in CaBaCo4O7

    Akaki Mitsuru

    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: Osaka University

    2019/04 - 2022/03

    More details Close

    Pulsed-high magnetic field experiments studied the magnetic and dielectric properties of the strong frustrated magnet CaBaCo4O7. The preparation of monodomain crystal samples and the development of high-field electron spin resonance measurements proceeded. In particular, I developed high-field and multi-frequency electron spin resonance measurements and advanced measurement techniques such as the realization of electric-field-applied electron spin resonance measurement and improvement of sensitivity of pulsed high-field electron spin resonance measurement. The developed high-field electron spin resonance experiments were also applied to magnetic materials other than the target materials, and many research results were obtained.

  3. Control of electric domains in spin-driven multiferroic materials by means of rotating magnetic fields

    Kuwahara Hideki, AKAHOSHI Daisuke, AKAKI Mitsuru

    Offer Organization: Japan Society for the Promotion of Science

    System: Grants-in-Aid for Scientific Research

    Category: Grant-in-Aid for Scientific Research (C)

    Institution: Sophia University

    2015/04/01 - 2018/03/31

    More details Close

    We have investigated change of electric domains in high-quality BiFeO3 single crystal grown by the laser-diode floating-zone method, as a function of applied magnetic-field (H) direction. We have demonstrated that electric polarization along the Y direction (PY) has been controlled by means of rotating H. Namely, PY was proportional to cos2q, where q is the angle of applied H direction against [100]. q dependence of PY has a π-periodicity, which means that PY remains unchanged by reversal of applied H direction. Furthermore, we have studied nonreciprocal DC magnetoelectric response, i.e., crystalline (polar) direction dependence of magnetoelectric susceptibilities for CaBaM4O7 (M=Co,Fe) single crystals. Especially, we focused on the electric-field (Ec)-induced magnetization (Mb,Mc) in CaBaM4O7, which had almost not yet been performed. We have found that the obtained magnetoelectric susceptibility α32 defined as ΔMb=α32Ec has a different sign depending on the polar direction.

  4. Coオケルマナイトにおける新奇磁気状態の解明 Competitive

    赤木 暢

    Offer Organization: 日本学術振興会

    System: 科学研究費補助金：基盤研究(C)

    2015/04 - 2018/03

  5. Magnetoelectric properties of Ca2CoSi2O7 studied by high-field electron spin resonance Competitive

    Mitsuru Akaki

    2017/08 - 2017/08

  6. Phase-separation and phase-control of the ordered state near the critical point by introducing the local inhomogeneity

    KUWAHARA Hideki, AKAHOSHI Daisuke, AKAKI Mitsuru

    Offer Organization: Japan Society for the Promotion of Science

    System: Grants-in-Aid for Scientific Research

    Category: Grant-in-Aid for Scientific Research (C)

    Institution: Sophia University

    2012/04/01 - 2015/03/31

    More details Close

    We have investigated the Mn-site substitution effect in Nd0.45Sr0.55MnO3 crystal, which has an A-type layered antiferromagnetic (A-AFM) phase with the 3dx2-y2-type orbital-order. Substitution of Fe or Ga for Mn-site suppresses both the A-AFM order and competing ferromagnetic (FM) correlation, whereas Cr substitution suppresses only the A-AFM order but reactivates the underlying FM correlation via double-exchange mechanism. In Nd0.45Sr0.55Mn0.95Cr0.05O3, the A-AFM state with the orbital-order is changed into the orbital-disordered three-dimensional FM metallic state by applying magnetic field of 12 T, which is much smaller than that of the parent compound. In addition, We have studied impurity-doping effect in multiferroic CaBa(Co1-xFex)4O7 with 0≦x≦0.25. The magnetization curve shows that the magnetic moment sharply rises at 64K for x = 0 and 54K for x = 0.005, while it does not change for 0.0156≦x. This result indicates that the ferrimagnetic state disappears above 0.0156.

  7. パルス強磁場を用いた電気磁気効果の研究と新規電気磁気効果材料の探索 Competitive

    赤木 暢

    Offer Organization: 日本学術振興会

    System: 科学研究費補助金：若手研究(B)

    2013/04 - 2015/03

  8. 強相関酸化物結晶における新奇磁性強誘電体の探索と交差相制御 Competitive

    赤木 暢

    Offer Organization: 日本学術振興会

    System: 科学研究費補助金：特別研究員奨励費

    2008/04 - 2011/03

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