Details of the Researcher

PHOTO

Yoshiomi Hiranaga
Section
Research Institute of Electrical Communication
Job title
Associate Professor
Degree

Research Areas 1

  • Nanotechnology/Materials / Thin-film surfaces and interfaces /

Awards 4

  1. 石田實記念財団研究奨励賞

    2023/10 一般財団法人石田實記念財団 強誘電体ナノスケール物性評価および強誘電体を用いた情報ストレージに関する研究

  2. 応用物理学会講演奨励賞

    2004/03 応用物理学会

  3. 映像情報メディア学会研究奨励賞

    2002/11 映像情報メディア学会

  4. MR研究会磁気記録研究専門委員長賞

    2002/06 IEICE磁気記録研究会

Papers 60

  1. Quantifying the dielectric contribution to pyroelectricity in LiTaO 3

    Jun Usami, Yoshiomi Hiranaga, Hiroyuki Yamada

    Japanese Journal of Applied Physics 65 (5) 050903-050903 2026/03/05

    Publisher: IOP Publishing

    DOI: 10.35848/1347-4065/ae47b2  

    ISSN: 0021-4922

    eISSN: 1347-4065

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    Abstract We investigate the bias-voltage ( V ) dependence of pyroelectricity in LiTaO 3 single crystals. The pyroelectric coefficient shows a pronounced V -dependence even when the polarization ( P ) is nearly saturated in the P – V hysteresis. Comparison with the dielectric permittivity demonstrates that the bias dependence is dominated by the dielectric contribution, where the internal bias shifts the apparent response even at zero external bias. We also develop an independent quantification of the dielectric contribution by modulating temperature and bias at different frequencies and detecting the combined-frequency component, enabling evaluation without changing the sample state and/or measurement conditions during the pyroelectric measurements.

  2. Realization of Non‐Equilibrium Wurtzite Structure in Heterovalent Ternary MgSiN2 Film Grown by Reactive Sputtering

    Sotaro Kageyama, Kazuki Okamoto, Shinnosuke Yasuoka, Keisuke Ide, Kota Hanzawa, Yoshiomi Hiranaga, Pochun Hsieh, Sankalpa Hazra, Albert Suceava, Akash Saha, Hiroko Yokota, Kei Shigematsu, Masaki Azuma, Venkatraman Gopalan, Hiroshi Uchida, Hidenori Hiramatsu, Hiroshi Funakubo

    Advanced Electronic Materials 2025/06

    DOI: 10.1002/aelm.202400880  

  3. Data-Driven Analysis of High-Resolution Hyperspectral Image Data Sets through Nanoscale Capacitance–Voltage Measurements to Visualize Ferroelectric Domain Dynamics

    Yoshiomi Hiranaga, Yuki Noguchi, Takanori Mimura, Takao Shimizu, Hiroshi Funakubo, Yasuo Cho

    ACS Applied Nano Materials 7 (8) 8525-8536 2024/04/09

    Publisher: American Chemical Society (ACS)

    DOI: 10.1021/acsanm.3c04636  

    ISSN: 2574-0970

    eISSN: 2574-0970

  4. Nanoscale mapping to assess the asymmetry of local C–V curves obtained from ferroelectric materials

    Yoshiomi Hiranaga, Takanori Mimura, Takao Shimizu, Hiroshi Funakubo, Yasuo Cho

    Japanese Journal of Applied Physics 61 (SN) SN1014-SN1014 2022/11/01

    Publisher: IOP Publishing

    DOI: 10.35848/1347-4065/ac7f7a  

    ISSN: 0021-4922

    eISSN: 1347-4065

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    Abstract The asymmetry in the capacitance–voltage (C–V) curves obtained from a ferroelectric material can provide information concerning the internal microstructure of a specimen. The present study visualized nanoscale switching of a HfO2-based ferroelectric thin film in real space based on assessing asymmetry using a local C–V mapping method. Several parameters were extracted from the local C–V curves at each point. The parameter Vi, indicating the lateral shift of the local C–V curve, was employed as an indicator of local imprint. In addition, the differences in the areas between the C–V curves for the forward and reverse sweeps, Sf − Sr, provided another slightly different indicator of nanoscale switching asymmetry. These parameters obtained from asymmetric C–V curves are thought to be related to internal electric fields and local stress caused by defects in the film. The work reported here also involved a cluster analysis of the extracted parameters using the k-means method.

  5. Simulation of nanoscale domain growth for ferroelectric recording

    Kenji Fukuzawa, Yoshiomi Hiranaga, Yasuo Cho

    AIP Advances 11 (11) 115117-115117 2021/11/01

    Publisher: AIP Publishing

    DOI: 10.1063/5.0074004  

    eISSN: 2158-3226

  6. High-precision local C–V mapping for ferroelectrics using principal component analysis

    Yoshiomi Hiranaga, Takanori Mimura, Takao Shimizu, Hiroshi Funakubo, Yasuo Cho

    Japanese Journal of Applied Physics 60 (SF) SFFB09-SFFB09 2021/11/01

    Publisher: IOP Publishing

    DOI: 10.35848/1347-4065/ac13d9  

    ISSN: 0021-4922

    eISSN: 1347-4065

  7. Local C-V Characterization for Ferroelectric Films

    Yoshiomi Hiranaga, Takanori Mimura, Takao Shimizu, Hiroshi Funakubo, Yasuo Cho

    IEEE International Symposium on Applications of Feeroelectric, ISAF 2021, International Symposium on Integrated Functionalities, ISIF 2021 and Piezoresponse Force Microscopy Workshop, PFM 2021 - Proceedings 2021/05/16

    Publisher: Institute of Electrical and Electronics Engineers Inc.

    DOI: 10.1109/ISAF51943.2021.9477316  

  8. Material Design Strategy for Enhancement of Readback Signal Intensity in Ferroelectric Probe Data Storage

    Yoshiomi Hiranaga, Yasuo Cho

    IEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control 68 (3) 859-864 2021/03

    Publisher: Institute of Electrical and Electronics Engineers (IEEE)

    DOI: 10.1109/tuffc.2020.3006909  

    ISSN: 0885-3010

    eISSN: 1525-8955

  9. Local C–V mapping for ferroelectrics using scanning nonlinear dielectric microscopy

    Yoshiomi Hiranaga, Takanori Mimura, Takao Shimizu, Hiroshi Funakubo, Yasuo Cho

    Journal of Applied Physics 128 (24) 244105-244105 2020/12/28

    Publisher: AIP Publishing

    DOI: 10.1063/5.0029630  

    ISSN: 0021-8979

    eISSN: 1089-7550

  10. Effects of deposition conditions on the ferroelectric properties of (Al1−xScx)N thin films

    Shinnosuke Yasuoka, Takao Shimizu, Akinori Tateyama, Masato Uehara, Hiroshi Yamada, Morito Akiyama, Yoshiomi Hiranaga, Yasuo Cho, Hiroshi Funakubo

    Journal of Applied Physics 128 (11) 114103-114103 2020/09/21

    Publisher: AIP Publishing

    DOI: 10.1063/5.0015281  

    ISSN: 0021-8979

    eISSN: 1089-7550

  11. Carrier distribution imaging using ∂C/∂z-mode scanning nonlinear dielectric microscopy Peer-reviewed

    Yoshiomi Hiranaga

    Review of Scientific Instruments Vol.90 083705.1-083705.12 2019/08

    DOI: 10.1063/1.5097906  

    ISSN: 0034-6748 1089-7623

  12. Nanoscale linear permittivity imaging based on scanning nonlinear dielectric microscopy Peer-reviewed

    Yoshiomi Hiranaga, Norimichi Chinone, Yasuo Cho

    Nanotechnology 29 (20) 205709-1-205709-9 2018/03/26

    Publisher: Institute of Physics Publishing

    DOI: 10.1088/1361-6528/aab3c2  

    ISSN: 1361-6528 0957-4484

  13. Dynamic observation of ferroelectric domain switching using scanning nonlinear dielectric microscopy Peer-reviewed

    Yoshiomi Hiranaga, Takanori Mimura, Takao Shimizu, Hiroshi Funakubo, Yasuo Cho

    JAPANESE JOURNAL OF APPLIED PHYSICS 56 (10) 2017/10

    DOI: 10.7567/JJAP.56.10PF16  

    ISSN: 0021-4922

    eISSN: 1347-4065

  14. High-density ferroelectric recording using a hard disk drive-type data storage system Peer-reviewed

    Tomonori Aoki, Yoshiomi Hiranaga, Yasuo Cho

    Journal of Applied Physics 119 (18) 184101-1-184101-8 2016/05/14

    Publisher: American Institute of Physics Inc.

    DOI: 10.1063/1.4948940  

    ISSN: 1089-7550 0021-8979

  15. Pb(Zr,Ti)O3recording media for probe data storage devices prepared by rf magnetron sputtering Peer-reviewed

    Yoshiomi Hiranaga, Yasuo Cho

    Japanese Journal of Applied Physics 53 (9) 2014/10/01

    Publisher: Japan Society of Applied Physics

    DOI: 10.7567/JJAP.53.09PA05  

    ISSN: 1347-4065 0021-4922

  16. Pb(Zr,Ti)O

    Hiranaga Yoshiomi, Cho Yasuo

    Jpn. J. Appl. Phys. 53 (9) 09PA05 2014/09/03

    Publisher: Institute of Physics

    DOI: 10.7567/JJAP.53.09PA05  

    ISSN: 0021-4922

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    Pb(Zr,Ti)O<inf>3</inf>(PZT) thin films for ferroelectric probe data storage technology were studied. (001)-oriented PZT thin films were deposited on SrRuO<inf>3</inf>/SrTiO<inf>3</inf>substrates by rf magnetron sputtering. Dc voltage was applied on the films using a metal-coated tip and the poling region was observed by scanning nonlinear dielectric microscopy (SNDM). The contrasts in the positive and negative poling regions in the SNDM images obtained were improved by using the PZT films after ion-beam irradiation. This suggests that a surface layer of a few nanometers in thickness was formed on the as-grown PZT film and the polarization was not invertible in the surface layer. The deposition condition was examined with focus on deposition temperature. Nanosized domain dots were successfully formed on a PZT film deposited at 550 °C.

  17. Charge gradient microscopy: high-speed visualization of polarization charges using a nanoscale probe Invited Peer-reviewed

    Seungbum Hong, Sheng Tong, Woon Ik Park, Yoshiomi Hiranaga, Yasuo Cho, Andreas Roelofs

    Nanoscale Spectroscopy and Nanotechnology 8 2014/07/30

  18. Charge gradient microscopy Peer-reviewed

    Yoshiomi Hiranaga

    Proceedings of the National Academy of Sciences 111 (18) 6566-6569 2014/05/06

    DOI: 10.1073/pnas.1324178111  

    ISSN: 0027-8424 1091-6490

  19. Charge Gradient Microscopy: A Method to Image Ferroelectric and Piezoelectric Domains Peer-reviewed

    Andreas Roelofs, Sheng Tong, Woon Ik Park, Yoshiomi Hiranaga, Yasuo Cho, Seungbum Hong

    2014 MRS Spring Meeting ABSTRACTS 2014/04/22

  20. Measurement of Nonlinear Dielectric Constants of Pb(Zr, Ti)O-3 Thin Films for Ferroelectric Probe Data Storage Technology Peer-reviewed

    Y. Hiranaga, Y. Cho

    2014 JOINT IEEE INTERNATIONAL SYMPOSIUM ON THE APPLICATIONS OF FERROELECTRICS, INTERNATIONAL WORKSHOP ON ACOUSTIC TRANSDUCTION MATERIALS AND DEVICES & WORKSHOP ON PIEZORESPONSE FORCE MICROSCOPY (ISAF/IWATMD/PFM) 87-90 2014

    DOI: 10.1109/ISAF.2014.6922979  

  21. Measurements of nonlinear dielectric constants of Pb(Zr,Ti)O3 thin films using a dynamic measuring method Peer-reviewed

    Yoshiomi Hiranaga, Yasuo Cho

    Japanese Journal of Applied Physics 52 (9) 09KA08-1-09KA08-4 2013/09

    DOI: 10.7567/JJAP.52.09KA08  

    ISSN: 0021-4922 1347-4065

  22. Super Higher Order Nonlinear Dielectric Microscopy with Super High Resolution Peer-reviewed

    Norimichi Chinone, Kohei Yamasue, Yoshiomi Hiranaga, Koichiro Honda, Yasuo Cho

    2012 MRS fall meeting ABSTRACTS 2012/11/27

  23. Lateral resolution improvement in scanning nonlinear dielectric microscopy by measuring super-higher-order nonlinear dielectric constants Peer-reviewed

    N. Chinone, K. Yamasue, Y. Hiranaga, K. Honda, Y. Cho

    APPLIED PHYSICS LETTERS 101 (21) 213112-1-213112-4 2012/11

    DOI: 10.1063/1.4766349  

    ISSN: 0003-6951

  24. Observation of Nanoscale Ferroelectric Domains Using Super-Higher-Order Nonlinear Dielectric Microscopy Peer-reviewed

    Norimichi Chinone, Kohei Yamasue, Yoshiomi Hiranaga, Yasuo Cho

    JAPANESE JOURNAL OF APPLIED PHYSICS 51 (9) 09LE07-1-09LE07-5 2012/09

    DOI: 10.1143/JJAP.51.09LE07  

    ISSN: 0021-4922

  25. Super-higher order nonlinear dielectric microscopy studies on ferroelectric materials and semiconductor devices Peer-reviewed

    N.CHINONE, K. YAMASUE, Y. HIRANAGA, K.HONDA, Y. CHO

    International Conference on Nanoscience + Technology 2012, ABSTRACTS 2012/07/24

  26. Ferroelectric Super-High Density Peer-reviewed

    Yasuo Cho, Kenkou Tanaka, Yoshiomi Hiranaga

    The 3rd International Symposium on Innovations in Advanced Materials for Optics & Electronics, ABSTRACTS 2010/10/17

  27. Intermittent contact scanning nonlinear dielectric microscopy Peer-reviewed

    Yoshiomi Hiranaga, Yasuo Cho

    REVIEW OF SCIENTIFIC INSTRUMENTS 81 (2) pp.023705 2010/02

    DOI: 10.1063/1.3274138  

    ISSN: 0034-6748

  28. Development of Ferroelectric Data Storage Test System for High-Density and High-speed Read/Write Peer-reviewed

    Yoshiomi Hiranaga

    MRS Proceedings 2009/12/03

    DOI: 10.1557/proc-1199-f10-09  

    ISSN: 0272-9172 1946-4274

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    <jats:title>Abstract</jats:title><jats:p>In this study, we have developed ferroelectric data storage test systems based on scanning nonlinear dielectric microscopy (SNDM) to conduct various experiments concerning read/write capability. Nanodomain formation on ferroelectric recording media was studied using the data storage test system. A nanodomain dot array was successfully written on a single-crystal LiTaO<jats:sup>3</jats:sup> recording medium. The diameter of the written dot was as small as 7 nm. Epitaxial-thin-film LiTaO<jats:sup>3</jats:sup> recording media were also developed. Nanodomain dots with the diameter of 25 nm were written on the thin-film recording medium. In addition, a non-contact probe-height control technique was adopted to solve the problem of tip abrasion using higher-order nonlinear dielectric response detection method. Finally, a hard-disk-drive (HDD)-type ferroelectric data storage test system was developed for conducting read/write tests under conditions close to those of actual operation. Capabilities of reading at the bit rate of 2 Mbps and writing at the bit rate of 20 Mbps were confirmed using the HDD-type data storage test system.</jats:p>

  29. Nano-Domain Formation on Ferroelectrics and Development of HDD-Type Ferroelectric Data Storage Test System Peer-reviewed

    Yoshiomi Hiranaga, Tomoya Uda, Yuichi Kurihashi, Yasuo Cho, Michio Kadota, Hikari Tochisita

    21th International Symposium on Integrated Ferroelectrics and Functionalities, ABSTRACTS 2009/09/29

  30. Nanodomain Formation on Ferroelectrics and Development of Hard-Disk-Drive-Type Ferroelectric Data Storage Devices Peer-reviewed

    Yoshiomi Hiranaga, Tomoya Uda, Yuichi Kurihashi, Hikari Tochishita, Michio Kadota, Yasuo Cho

    JAPANESE JOURNAL OF APPLIED PHYSICS 48 (9) 2009/09

    DOI: 10.1143/JJAP.48.09KA18  

    ISSN: 0021-4922

  31. Synthesis and characterization of Bi(Ni0.5Ti0.5)O3

    Yoshiomi Hiranaga

    Acta Crystallographica Section A Foundations of Crystallography 2008/08/23

    DOI: 10.1107/s0108767308083220  

    ISSN: 0108-7673

  32. Observations of domain structure and ferroelectricity in Bi(Ni0.5Ti0.5)O-3 ceramics fabricated by high-pressure sintering Invited Peer-reviewed

    Kazuya Kitada, Masafumi Kobune, Wataru Adachi, Tetsuo Yazawa, Hiroyuki Saitoh, Katsutoshi Aoki, Jun'ichiro Mizuki, Kenya Ishikawa, Yoshiomi Hiranaga, Yasuo Cho

    CHEMISTRY LETTERS 37 (5) 560-561 2008/05

    DOI: 10.1246/cl.2008.560  

    ISSN: 0366-7022

    eISSN: 1348-0715

  33. Scanning Nonlinear Dielectric Microscopy Nano-Science and Technology for Next Generation High Density Ferroelectric Data Storage Peer-reviewed

    Kenkou Tanaka, Yuichi Kurihashi, Tomoya Uda, Yasuhiro Daimon, Nozomi Odagawa, Ryusuke Hirose, Yoshiomi Hiranaga, Yasuo Cho

    JAPANESE JOURNAL OF APPLIED PHYSICS 47 (5) 3311-3325 2008/05

    DOI: 10.1143/JJAP.47.3311  

    ISSN: 0021-4922

    eISSN: 1347-4065

  34. Novel HDD-type SNDM ferroelectric data storage system aimed at high-speed data transfer with single probe operation Invited Peer-reviewed

    Yoshiomi Hiranaga, Tomoya Uda, Yuichi Kurihashi, Kenkou Tanaka, Yasuo Cho

    IEEE TRANSACTIONS ON ULTRASONICS FERROELECTRICS AND FREQUENCY CONTROL 54 (12) 2523-2528 2007/12

    DOI: 10.1109/TUFFC.2007.571  

    ISSN: 0885-3010

  35. Nanodomain Manipulation for Ferroelectric Data Storage with High Recording Density, Fast Domain Switching and Low Bit Error Rate Peer-reviewed

    Yoshiomi Hiranaga, Sunao Hashimoto, Nozomi Odagawa, Kenkou Tanaka, Yasuo Cho

    2006 15th IEEE International Symposium on Applications of Ferroelectrics 280-283 2007

    ISSN: 1099-4734

  36. Non-contact probe control and high-speed writing for rotated-disk-type ferroelectric data storage devices Invited Peer-reviewed

    Y. Hiranaga, T. Uda, Y. Kurihashi, K. Tanaka, N. Odagawa, Y. Cho

    IEEE International Symposium on Applications of Ferroelectrics 326-329 2007

    DOI: 10.1109/ISAF.2007.4393255  

  37. Ferroelectric Ultra High-Density Data Storage Based on Scanning Nonlinear Dielectric Microscopy Peer-reviewed

    Yasuo Cho, Sunao Hashimoto, Nozomi Odagawa, Kenkou Tanaka, Yoshiomi Hiranaga

    Proccedings of 2006 Non-Volatile Memory Technology Symposium 34-39 2006/11

  38. Nanodomain manipulation for ultrahigh density ferroelectric data storage Peer-reviewed

    Y Cho, S Hashimoto, N Odagawa, K Tanaka, Y Hiranaga

    NANOTECHNOLOGY 17 (7) S137-S141 2006/04

    DOI: 10.1088/0957-4484/17/7/S06  

    ISSN: 0957-4484

  39. Nanodomain manipulation for reduction of bit error rate in terabit/inch(2)-class ferroelectric data storage Peer-reviewed

    Y Hiranaga, K Tanaka, YS Cho

    JAPANESE JOURNAL OF APPLIED PHYSICS PART 1-REGULAR PAPERS BRIEF COMMUNICATIONS & REVIEW PAPERS 45 (3B) 2220-2224 2006/03

    DOI: 10.1143/JJAP.45.2220  

    ISSN: 0021-4922

  40. Scanning nonlinear dielectric microscopy and its use in next-generation ultrahigh-density ferroelectric data storage Peer-reviewed

    Y Cho, H Odagawa, K Ohara, Y Hiranaga

    ELECTRONICS AND COMMUNICATIONS IN JAPAN PART II-ELECTRONICS 89 (1) 19-31 2006

    DOI: 10.1002/ecjb.20170  

    ISSN: 8756-663X

  41. Terabit per square inch information data storage on ferroelectrics with low bit error rate Peer-reviewed

    Y. Hiranaga, K. Tanaka, Y. Cho

    FERROELECTRICS 333 99-106 2006

    DOI: 10.1080/00150190600689373  

    ISSN: 0015-0193

  42. Real information storage using ferroelectrics with a density of 1 TBIT/INCH2 Peer-reviewed

    K. Tanaka, Y. Hiranaga, Y. Cho

    FERROELECTRICS 340 99-105 2006

    DOI: 10.1080/00150190600889080  

    ISSN: 0015-0193

  43. Realization of 10 Tbit/in.(2) memory density and subnanosecond domain switching time in ferroelectric data storage Peer-reviewed

    YS Cho, S Hashimoto, N Odagawa, K Tanaka, Y Hiranaga

    APPLIED PHYSICS LETTERS 87 (23) 232907-1-232907-3 2005/12

    DOI: 10.1063/1.2140894  

    ISSN: 0003-6951

    eISSN: 1077-3118

  44. Ultrahigh-density ferroelectric data storage with low bit error rate Peer-reviewed

    Y Hiranaga, YS Cho

    JAPANESE JOURNAL OF APPLIED PHYSICS PART 1-REGULAR PAPERS BRIEF COMMUNICATIONS & REVIEW PAPERS 44 (9B) 6960-6963 2005/09

    DOI: 10.1143/JJAP.44.6960  

    ISSN: 0021-4922

  45. Real Information Recording in Ferroelectric Data Storage Medium with Memory Density of 1 Tbit/inch2 Peer-reviewed

    Yoshiomi Hiranaga

    MRS Proceedings 902E 0902-T10-41.1-0902-T10-41.6 2005

    DOI: 10.1557/proc-0902-t10-41  

    ISSN: 0272-9172 1946-4274

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    通研インポート200703

  46. 非線形誘電率顕微鏡と次世代超高密度強誘電体記録 Invited Peer-reviewed

    長康雄, 小田川裕之, 大原鉱也, 平永良臣

    電子情報通信学会論文誌C J88-C (1) 1-12 2005

    Publisher: The Institute of Electronics, Information and Communication Engineers

    ISSN: 1345-2827

  47. Evaluation of bit error rate for ferroelectric data storage Peer-reviewed

    Y Hiranaga, Y Cho

    JAPANESE JOURNAL OF APPLIED PHYSICS PART 1-REGULAR PAPERS SHORT NOTES & REVIEW PAPERS 43 (9B) 6632-6634 2004/09

    DOI: 10.1143/JJAP.43.6632  

    ISSN: 0021-4922

  48. Ferroelectric single crystal recording media fabricated by polarization controlled wet etching process Peer-reviewed

    Y Hiranaga, Y Wagatsuma, Y Cho

    JAPANESE JOURNAL OF APPLIED PHYSICS PART 2-LETTERS & EXPRESS LETTERS 43 (4B) L569-L571 2004/04

    DOI: 10.1143/JJAP.43.L569  

    ISSN: 0021-4922

  49. Fundamental study on ferroelectric data storage with the density above 1 Tbit/inch(2) using congruent lithium tantalate Peer-reviewed

    YS Cho, Y Hiranaga, K Fujimoto, Y Wagatsuma, A Onoe

    INTEGRATED FERROELECTRICS 61 77-81 2004

    DOI: 10.1090/10584580490458810  

    ISSN: 1058-4587

  50. LiTaO3 recording media prepared by polarization controlled wet etching process Peer-reviewed

    Y Hiranaga, Y Wagatsuma, Y Cho

    INTEGRATED FERROELECTRICS 68 221-228 2004

    DOI: 10.1080/10584580490896526  

    ISSN: 1058-4587

  51. Tbit/inch2 Ferroelectric Data Storage Using SNDM Nano Domain Engineering System Peer-reviewed

    Yasuo CHO, Yoshiomi HIRANAGA, Kenjiro FUJIMOTO, Yasuo WAGATSUMA, Atsushi ONOE, Kazuya TERABE, Kenji KITAMURA

    Proceedings of the 10th European Meeting on Ferroelectricity 2003/08

  52. Terabit inch-2 ferroelectric data storage using scanning nonlinear dielectric microscopy nanodomain engineering system Peer-reviewed

    Y. Cho, K. Fujimoto, Y. Hiranaga, Y. Wagatsuma, A. Onoe, K. Terabe, K. Kitamura

    Nanotechnology 14 (6) 637-642 2003/06

    DOI: 10.1088/0957-4484/14/6/314  

    ISSN: 0957-4484

  53. Ultrahigh-Density Ferroelectric Data Storage Using Scanning Nonlinear Dielectric Microscopy Peer-reviewed

    Y. Hiranaga, Y. Cho, K. Fujimoto, Y. Wagatsuma, A. Onoe

    Japanese Journal of Applied Physics 42 (9) 6050-6054 2003/06

    Publisher: INSTITUTE OF PURE AND APPLIED PHYSICS

    DOI: 10.1143/jjap.42.6050  

    ISSN: 0021-4922

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    Ferroelectrics have generated considerable interest as promising storage media. In this paper, an investigation of ultrahigh-density ferroelectric data storage based on scanning nonlinear dielectric microscopy (SNDM) was carried out. For the purpose of obtaining fundamental knowledge of high-density ferroelectric data storage, several experiments on nanodomain formation in lithium tantalate (LiTaO3) single crystal were conducted. As a result, a very small inverted domain with a radius of 6 nm was successfully formed in stoichiometric LiTaO3 (SLT), and in addition, a domain dot array with an areal density of 1.5 Tbit/inch2 was written on congruent LiTaO3 (CLT). Additionally, the first prototype high-density ferroelectric data storage system was developed. Using this system, reading and writing data transfer rates were evaluated.

  54. Tbit/inch2 Ferroelectric Data Storage Based on Scanning Nonlinear Dielectric Microscopy Peer-reviewed

    Yasuo CHO, Yoshiomi HIRANAGA, Kenjiro FUJIMOTO, Atsushi ONOE, Kazuya TERABE, Kenji KITAMURA

    Transactions of the Material Research Society of Japan, vol.28-1 109-112 2003/03

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    &lt;RIEC&gt;&lt;DUMMY&gt;あ&lt;/DUMMY&gt;&lt;BIBID&gt;2003500372&lt;/BIBID&gt;&lt;/RIEC&gt;

  55. First Prototype of High-Density Ferroelectric Data Storage System

    Yoshiomi Hiranaga

    MRS Proceedings 784 453-458 2003

    DOI: 10.1557/proc-784-c11.58  

    ISSN: 0272-9172 1946-4274

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    <jats:title>ABSTRACT</jats:title><jats:p>The first prototype of high-density ferroelectric data storage system based on scanning nonlinear dielectric microscopy was developed in order to establish basic elemental technologies for actual read/write functions aiming for practical application. Using this system, a data transfer rate was evaluated. 9 kbps reading and 50 kbps writing were demonstrated with respect to 440 kbit/inch bit data array written on a lithium tantalate single crystal thin plate. Additionally, we considered future prospects for developing the data storage system with further fast data transfer rate.</jats:p>

  56. Tbit/inch(2) data storage using scanning nonlinear dielectric microscopy Peer-reviewed

    Y Cho, K Fujimoto, Y Hiranaga, Y Wagatsuma, A Onoe, K Terabe, K Kitamura

    FERROELECTRICS 292 51-58 2003

    DOI: 10.1080/00150190390222817  

    ISSN: 0015-0193

  57. Tbit/inch(2) ferroelectric data storage based on scanning nonlinear dielectric microscopy Peer-reviewed

    YS Cho, K Fujimoto, Y Hiranaga, Y Wagatsuma, A Onoe, K Terabe, K Kitamura

    APPLIED PHYSICS LETTERS 81 (23) 4401-4403 2002/12

    DOI: 10.1063/1.1526916  

    ISSN: 0003-6951

  58. Tbit/inch2 ferroelectric data storage using scanning nonlinear dielectric microscopy Peer-reviewed

    Yasuo Cho, K. Fujimoto, Y. Hiranaga, Be Liu, Y. Wagatuma, A. Onoe, K. Terabe, K. Kitamura

    Proceedings of the IEEE Conference on Nanotechnology 2002- 255-259 2002

    Publisher: IEEE Computer Society

    DOI: 10.1109/NANO.2002.1032241  

    ISSN: 1944-9380 1944-9399

  59. Basic Study on High-density Ferroelectric Data Storage Using Scanning Nonlinear Dielectric Microscopy

    Yoshiomi Hiranaga

    MRS Proceedings U5.5.1-U.5.5.6 2002

    DOI: 10.1557/proc-748-u5.5  

    ISSN: 0272-9172 1946-4274

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    <jats:title>ABSTRACT</jats:title><jats:p>Scanning Nonlinear Dielectric Microscopy (SNDM) is the method for observing ferroelectric polarization distribution, and now, its resolution has become to the sub-nanometer order, which is much higher than other scanning probe microscopy (SPM) methods for the same purpose. Up to now, we have studied high-density ferroelectric data storage using this microscopy. In this study, we have conducted fundamental experiments of nano-sized inverted domain formation in LiTaO<jats:sub>3</jats:sub> single, and successfully formed inverted dot array with the density of 1.5 Tbit/inch<jats:sup>2</jats:sup>.</jats:p>

  60. Nano-sized inverted domain formation in stoichiometric LiTaO3 single crystal using scanning nonlinear dielectric microscopy Peer-reviewed

    Y Hiranaga, K Fujimoto, Y Cho, Y Wagatsuma, A Onoe, K Terabe, K Kitamura

    INTEGRATED FERROELECTRICS 49 203-209 2002

    DOI: 10.1080/10584580290171919  

    ISSN: 1058-4587

Show all ︎Show first 5

Misc. 27

  1. Nanoscale Mapping of Domain Switching Behavior in Ferroelectric Films

    平永良臣, 三村和仙, 清水荘雄, 舟窪浩, 長康雄

    応用物理学会春季学術講演会講演予稿集(CD-ROM) 68th 2021

    ISSN: 2436-7613

  2. Noise Reduction by Principal Component Analysis for Local C-V Mapping

    平永良臣, 三村和仙, 清水荘雄, 舟窪浩, 長康雄

    応用物理学会秋季学術講演会講演予稿集(CD-ROM) 82nd 2021

    ISSN: 2436-7613

  3. 走査型非線形誘電率顕微鏡を用いたナノスケール分極反転過程の動的観察

    平永良臣, 三村和仙, 清水荘雄, 舟窪浩, 長康雄

    応用物理学会春季学術講演会講演予稿集(CD-ROM) 64th 2017

    ISSN: 2436-7613

  4. 強誘電性HfO2薄膜におけるナノスケール分極反転ドット書き込み

    平永良臣, 三村和仙, 清水荘雄, 舟窪浩, 長康雄

    応用物理学会秋季学術講演会講演予稿集(CD-ROM) 78th 2017

    ISSN: 2436-7613

  5. Y添加HfO₂薄膜における強誘電ドメイン反転のSNDM観察 (磁気記録・情報ストレージ)

    平永 良臣, 長 康雄, 三村 和仙, 清水 荘雄, 舟窪 浩

    電子情報通信学会技術研究報告 = IEICE technical report : 信学技報 116 (348) 35-39 2016/12/08

    Publisher: 電子情報通信学会

    ISSN: 0913-5685

  6. Y添加HfO₂薄膜における強誘電ドメイン反転のSNDM観察 (マルチメディアストレージ)

    平永 良臣, 長 康雄, 三村 和仙, 清水 荘雄, 舟窪 浩

    映像情報メディア学会技術報告 = ITE technical report 40 (44) 35-39 2016/12

    Publisher: 映像情報メディア学会

    ISSN: 1342-6893

  7. 強誘電性Y:HfO₂薄膜におけるナノスケールドメイン反転 (マルチメディアストレージ)

    陳 舟, 平永 良臣, 清水 荘雄, 片山 きりは, 三村 和仙, 舟窪 浩, 長 康雄

    映像情報メディア学会技術報告 = ITE technical report 40 (7) 29-32 2016/03

    Publisher: 映像情報メディア学会

    ISSN: 1342-6893

  8. 走査型非線形誘電率顕微鏡における強誘電性Y:HfO2薄膜のドメイン反転

    CHEN Zhou, 平永良臣, 清水荘雄, 片山きりは, 三村和仙, 舟窪浩, 長康雄

    応用物理学会春季学術講演会講演予稿集(CD-ROM) 63rd 2016

    ISSN: 2436-7613

  9. Nanoscale Domain Inversion in Ferroelectric Y:HfO2 Thin Film

    CHEN Zhou, 平永良臣, 清水荘雄, 片山きりは, 三村和仙, 舟窪浩, 長康雄

    電子情報通信学会技術研究報告 115 (490(MR2015 34-37)) 2016

    ISSN: 0913-5685

  10. 強誘電体プローブデータストレージ : 現状と今後の展開 (磁気記録・情報ストレージ)

    平永 良臣, 長 康雄

    電子情報通信学会技術研究報告 = IEICE technical report : 信学技報 115 (356) 31-36 2015/12/10

    Publisher: 電子情報通信学会

    ISSN: 0913-5685

  11. 強誘電体プローブデータストレージ : 現状と今後の展開 (マルチメディアストレージ)

    平永 良臣, 長 康雄

    映像情報メディア学会技術報告 = ITE technical report 39 (48) 31-36 2015/12

    Publisher: 映像情報メディア学会

    ISSN: 1342-6893

  12. Removal of Surface Layers of Ferroelectric Recording Media by Ion Beam Irradiation

    115 (71) 31-36 2015/06/04

    Publisher: 電子情報通信学会

    ISSN: 0913-5685

  13. Removal of Surface Layers of Ferroelectric Recording Media by Ion Beam Irradiation

    39 (19) 31-36 2015/06

    Publisher: 映像情報メディア学会

    ISSN: 1342-6893

  14. Achievement of Much Higher Memory Density and Realization of Successive Writing and Reading Operation in HDD-Type Ferroelectric Data Storage System

    AOKI Tomonori, HIRANAGA Yoshiomi, CHO Yasuo

    IEICE technical report. Magnetic recording 114 (355) 29-33 2014/12/11

    Publisher: The Institute of Electronics, Information and Communication Engineers

    ISSN: 0913-5685

    More details Close

    Ferroelectric data storage system records the data bits in the form of the polarization direction. In this system, data bits are read by scanning nonlinear dielectric microscopy (SNDM). The domain wall of typical ferroelectric materials is as thin as a few lattice parameters, which is favorable for high-density data storage. Up to now, we demonstrated recording with a density of 2 Tbit/inch has been achieved in rotating state by HDD-type ferroelectric data storage system. In this study, we achieved much higher memory density above 3 Tbit/inch^2 and succeeded a series of writing and reading operation under a bit spacing of 25.8 nm (which corresponds to a memory density of 1 Tbit/inch^2)

  15. Achievement of Much Higher Memory Density and Realization of Successive Writing and Reading Operation in HDD-Type Ferroelectric Data Storage System

    38 (50) 29-33 2014/12

    Publisher: 映像情報メディア学会

    ISSN: 1342-6893

  16. Study on PZT thin films for ultra-high density ferroelectric data storage based on scanning nonlinear dielectric microscopy

    CHEN Yitong, HIRANAGA Yoshiomi, CHO Yasuo

    IEICE technical report. Magnetic recording 114 (327) 17-22 2014/11/25

    Publisher: The Institute of Electronics, Information and Communication Engineers

    ISSN: 0913-5685

    More details Close

    Lead zirconate titanate ( Pb(Zr,Ti)O_3:PZT) thin film is one of the promising candidate ferroelectrics for the next generation high density ferroelectric data storage based on scanning nonlinear dielectric microscopy(SNDM). Its very large nonlinear dielectric constants enables us to achieve high speed reading. To use this advantage, high quality PZT thin film with high polarization switching speed of very small nano-domain dots is required. In this paper, we describe the fabrication method for high quality PZT film using Radio-frequency magnetron sputtering equipment. We investigated the quality of the films as functions of the amount of Pb and the thickness of film. The properties of these films are measured and discussed.

  17. Study on PZT thin films for ultra-high density ferroelectric data storage based on scanning nonlinear dielectric microscopy

    38 (45) 17-22 2014/11

    Publisher: 映像情報メディア学会

    ISSN: 1342-6893

  18. Measurement of Nonlinear Permittivities of PZT Thin Films Used in Ferroelectric Probe Data Storage Technology

    HIRANAGA Yoshiomi, CHO Yasuo

    IEICE technical report. Magnetic recording 114 (77) 1-5 2014/06/12

    Publisher: The Institute of Electronics, Information and Communication Engineers

    ISSN: 0913-5685

    More details Close

    The development of ferroelectric materials with large nonlinear permittivity is important for improving the reading bit rate in ferroelectric probe data storage. In this study, Pb(Zr,Ti)O_3(PZT) thin films are prepared with various Zr/Ti ratio and evaluated for this novel data storage technology. Nonlinear dielectric constants of the PZT films were studied in detail. The nonlinear dielectric constants of the PZT films with Zr/Ti=52/48 was measured to be 50 aF/V under bias voltage application, which was approximately 70 times larger than that of LiTaO_3 single crystal.

  19. Measurement of Nonlinear Permittivities of PZT Thin Films Used in Ferroelectric Probe Data Storage Technology

    38 (22) 1-5 2014/06

    Publisher: 映像情報メディア学会

    ISSN: 1342-6893

  20. Fundamental Experiments for HDD-type Ferroelectric Data Storage with a Density of 2 Tbit/inch^2

    AOKI Tomonori, HIRANAGA Yoshiomi, CHO Yasuo

    IEICE technical report. Magnetic recording 113 (407) 15-20 2014/01/24

    Publisher: The Institute of Electronics, Information and Communication Engineers

    ISSN: 0913-5685

    More details Close

    Ferroelectric data storage system records the data bits in the form of the polarization direction. In this system, data bits are read by scanning nonlinear dielectric microscopy (SNDM). The domain wall of typical ferroelectric materials is as thin as a few lattice parameters, which is favorable for high-density data storage. Up to now, we demonstrated that the smallest single nanodomain dot with a size of 2.8 nm diameter was successfully formed and real information data with a density of 4 Tbit/inch^2 has been achieved. In this paper, we introduce fundamental experiments of ferroelectric data storage system including most recent study result which demonstrate recording with a density of 2 Tbit/inch has been achieved in rotating state by HDD-type ferroelectric data storage system.

  21. 24pYE-7 Ferroelectric Domain structures Observed by Scanning Nonlinear Dielectric Microscopy

    Hiranaga Yoshiomi, Cho Yasuo

    Meeting abstracts of the Physical Society of Japan 63 (1) 935-935 2008/02/29

    Publisher: The Physical Society of Japan (JPS)

    ISSN: 1342-8349

  22. Synthesis and characterization of Bi(Ni0.5Ti0.5)O-3

    Hiroyuki Saitoh, Kazuya Kitada, Masafumi Kobune, Wataru Adachi, Tetsuo Yazawa, Kenya Ishikawa, Yoshiomi Hiranaga, Yasuo Cho, Katsutoshi Aoki

    ACTA CRYSTALLOGRAPHICA A-FOUNDATION AND ADVANCES 64 C522-C523 2008

    DOI: 10.1107/S0108767308083220  

    ISSN: 2053-2733

  23. C-6-5 回転ディスク型非接触強誘電体記録装置の開発(C-6.電子部品・材料,一般講演)

    夘田 知也, 平永 良臣, 長 康雄

    電子情報通信学会ソサイエティ大会講演論文集 2006 (2) 12-12 2006/09/07

    Publisher: 一般社団法人電子情報通信学会

  24. 10項 超音波エレクトロニクス研究会(3節 工学研究会,第5章 国際会議・シンポジウム等)

    長 康雄, 平永 良臣

    東北大学電気通信研究所研究活動報告 13 284-285 2006/01/01

  25. Tbits/inch^2 Ferroelectric Data Storage Based on Scanning Nonlinear Dielectric Microscopy

    CHO Yasuo, HIRANAGA Yoshiomi

    Technical report of IEICE. OME 104 (285) 37-42 2004/09/02

    Publisher: The Institute of Electronics, Information and Communication Engineers

    ISSN: 0913-5685

    More details Close

    Scanning Nonlinear Dielectric Microscope (SNDM) is the method for observing ferroelectric polarization distribution, and now, its resolution has become to the sub-nanometer order. Up to now, we have studied high-density ferroelectric data storage using this microscope. In this study, we selected stoichiometric and congruent LiTaO_3 single crystals as ferroelectric recording media. At first, using stoichiometric LiTaO_3 (SLT), we studied polarization inversion characteristics in detail, and as a result, we achieved forming small inverted domain with the radius of 6nm. And we also studied the retention of inverted domain. Next, using congruent LiTaO_3 (CLT), we achieved high-density data storage in 1.5Tbit/inch^2 and bit error ratio of 1.2×10^<-3>.

  26. C-6-12 走査型非線形誘電率顕微鏡を用いた Si_3N_4/SiO_2/Si 半導体基板への電荷記録

    橋本 直, 平永 良臣, 長 康雄, 本田 耕一郎

    電子情報通信学会ソサイエティ大会講演論文集 2003 (2) 15-15 2003/09/10

    Publisher: 一般社団法人電子情報通信学会

  27. C-7-1 強誘電微小分極反転ドメインの生成とデータストレージシステムの試作

    平永 良臣, 我妻 康夫, 長 康雄, 尾上 篤

    電子情報通信学会ソサイエティ大会講演論文集 2003 (2) 18-18 2003/09/10

    Publisher: 一般社団法人電子情報通信学会

Show all ︎Show first 5

Presentations 211

  1. Shingled Dielectric Recording

    Yasuo Cho, Yoshiomi Hiranaga

    2026 IEEE INTERNATIONAL SYMPOSIUM ON APPLICATIONS OF FERROELECTRICS (ISAF) & PIEZORESPONSE FORCE MICROSCOPY (PFM) 2026/07/09

  2. Lead-Free Ferroelectric Single Crystal Enabling Efficient Electrocaloric Cooling Over a Wide Temperature Range

    Jun Usami, Yoshiomi Hiranaga, Hiroyuki Yamada

    2026 IEEE INTERNATIONAL SYMPOSIUM ON APPLICATIONS OF FERROELECTRICS (ISAF) & PIEZORESPONSE FORCE MICROSCOPY (PFM) 2026/07/08

  3. Local C–V Mapping Study of Nanoscale Electric-Field-Cycling-Induced Changes in HfO2-Based Ferroelectric Capacitors

    Yoshiomi Hiranaga, Yuki Itoya, Masaharu Kobayashi

    2026 IEEE INTERNATIONAL SYMPOSIUM ON APPLICATIONS OF FERROELECTRICS (ISAF) & PIEZORESPONSE FORCE MICROSCOPY (PFM) 2026/07/07

  4. 電界サイクリング後のHfO2系強誘電体キャパシタの局所C-Vマッピング観察

    平永良臣, 糸矢祐喜, 小林正治

    第43回強誘電体会議 2026/06/12

  5. 広温度域・高効率電気熱量冷却を実現する鉛フリー強誘電単結晶

    宇佐美 潤, 平永 良臣, 山田 浩之

    第43回強誘電体会議 2026/06/10

  6. Nanoscale Investigation of Nonlinear Polarization Behavior Using Scanning Nonlinear Dielectric Microscopy

    Y. Hiranaga, M. Fuse, T. Mimura, T. Shimizu, Y. Ehara, I. Gaponenko, N. Bassiri-Gharb, H. Funakubo

    International Workshop on Relaxor Ferroelectrics (IWRF2026) 2026/05/26

  7. 単結晶LiTaO3におけるLi欠損が焦電効果に与える影響

    宇佐美潤, 平永良臣, 山田浩之

    日本物理学会 2026年春季大会 2026/03/24

  8. 強誘電体におけるドメイン壁ピニングの焦電効果への影響

    宇佐美 潤, 岡本 有貴, 井上 悠, 平永 良臣, 小林 健, 山田 浩之

    第73回応用物理学会春季学術講演会 2026/03/17

  9. HfO2系強誘電体キャパシタにおける電界サイクリング誘起変化の局所C–Vマッピング観察

    平永 良臣, 糸矢 祐喜, 小林 正治

    第73回応用物理学会春季学術講演会 2026/03/17

  10. ウルツ鉱構造を有する異原子価三元系窒化物MgSiN2薄膜へのScまたはBドーピング

    影山 壮太郎, 岡本 一輝, 平永 良臣, 舟窪, 東京科学大

    第73回応用物理学会春季学術講演会 2026/03/17

  11. Shingled Dielectric Recording

    Yasuo Cho, Yoshiomi Hiranaga

    2025 MRS Fall Meeting & Exhibit 2025/12/03

  12. 強誘電体プローブメモリにおける瓦書き

    長 康雄, 平永 良臣

    第86回応用物理学会秋季学術講演会 2025/09/09

  13. 単結晶LiTaO3の焦電ヒステリシスカーブの非対称効果

    宇佐美 潤, 平永 良臣, 山田 浩之

    第86回応用物理学会秋季学術講演会 2025/09/09

  14. ナノ電極C–V測定による強誘電特性評価

    平永 良臣, 長 康雄

    第86回応用物理学会秋季学術講演会 2025/09/09

  15. C-V Measurement of Ferroelectric Nanocapacitors

    Yoshiomi Hiranaga

    2025 IEEE International Symposium on Applications of Ferroelectrics 2025/07/14

  16. 強誘電体ナノキャパシタのC-V曲線の電極サイズ依存性

    平永良臣

    第42回強誘電体応用会議 2025/06/13

  17. ウルツ鉱構造を有する異原子価3元系窒化物MgSiN2とAlNの固溶体薄膜の作製と評価

    影山壮太郎, 岡本一輝, 平永良臣, 舟窪浩

    第42回強誘電体応用会議 2025/06/11

  18. Preparation of (Mg,Si)N-based Solid Solution Films by RF Magnetron Sputtering Method and Their Dielectric and Piezoelectric Properties

    Sotaro Kageyama, Kazuki Okamoto, Yoshiomi Hiranaga, Hiroshi Funakubo

    2025 IWATMD 2025/05/14

  19. ウルツ鉱構造異原子価3元系窒化物MgSiN2薄膜の作製と評価

    影山壮太郎, 岡本一輝, 平永良臣, 上岡義弘, 召田雅実, 舟窪浩

    第72回応用物理学会春季学術講演会 2025/03/14

  20. ウルツ鉱構造(Mg,Si)N-AlN固溶体薄膜の作製と評価

    影山壮太郎, 岡本一輝, 平永良臣, 舟窪浩

    第72回応用物理学会春季学術講演会 2025/03/14

  21. 異原子価3元系窒化物MgSiN2薄膜の2段階成膜による結晶化温度の低減

    影山壮太郎, 岡本一輝, 平永良臣, 舟窪浩

    第63回セラミックス基礎科学討論会 2025/01/08

  22. Multivariate Statistical Analysis of High-Resolution Hyperspectral Image Datasets Using Nanoscale Capacitance-Voltage Measurements for Ferroelectric Thin Film Characterization

    Yoshiomi Hiranaga, Yuki Noguchi, Takanori Mimura, Takao Shimizu, Hiroshi Funakubo, and Yasuo Cho

    2024 MRS Fall Meeting & Exhibit 2024/12/03

  23. Fabrication of (Mg,Si)N Films by Reactive RF Magnetron Sputtering Method and Their Structure and Electric Properties

    Sotaro Kageyama, Kazuki Okamoto, Shinnosuke Yasuoka, Yoshiomi Hiranaga, Yoshihiro Ueoka, Masami Mesuda, Hiroshi Funakubo

    21st US-Japan Seminar on Dielectric and Piezoelectric Ceramics 2024/10/10

  24. Growth of Heterovalent Ternary Nitride, (Mg,Si)N, Thin Films and Their Piezoelectricity

    Sotaro Kageyama, Kazuki Okamoto, Shinnosuke Yasuoka, Yoshiomi Hiranaga, Hiroshi Uchida, Hiroshi Funakubo

    STAC14 2024 (The fourteenth International Conference on the Science and Technology for Advanced Ceramics) 2024/10/08

  25. Development of Integrated Measurement System for Local C-V Mapping and Piezoresponse Force Microscopy

    Yuki Noguchi, Takanori Mimura, Takao Shimizu, Hiroshi Funakubo, Yohiomi Hiranaga

    2024 IEEE Ultrasonics, Ferroelectrics, and Frequency Control Joint Symposium 2024/09/25

  26. Analysis of Nanoscale Ferroelectric Domain Dynamics Based on Image Processing of Local C-V Maps

    Yohiomi Hiranaga, Takanori Mimura, Takao Shimizu, Hiroshi Funakubo, Yasuo Cho

    2024 IEEE Ultrasonics, Ferroelectrics, and Frequency Control Joint Symposium 2024/09/24

  27. 実用的強誘電体記録を目指したPZT大面積記録媒体の開発

    長 康雄, 平永 良臣

    第85回応用物理学会秋季学術講演会 2024/09/17

  28. 局所C-Vマッピングと圧電応答顕微鏡の統合計測システムによる強誘電体薄膜の解析

    野口雄貴,三村和仙, 清水荘雄, 舟窪浩, 平永良臣

    第41回強誘電体会議 2024/06/13

  29. 局所C-V マッピングと圧電応答顕微鏡の統合計測システムの開発

    野口 雄貴、三村 和仙、清水 荘雄、舟窪 浩、平永 良臣

    第71回応用物理学会春季学術講演会 2024/03/23

  30. 局所C-Vマップの画像処理に基づくナノスケール強誘電分極反転ダイナミクスの解析

    平永 良臣、三村 和仙、清水 荘雄、舟窪 浩、長 康雄

    第71回応用物理学会春季学術講演会 2024/03/23

  31. Visualization of Nanoscale Ferroelectric Domain Dynamics Based on Local Capacitance Measurements Invited

    Y. Hiranaga

    JAIST International symposium of Nano-Materials for Novel Devices 2024/01/11

  32. Research on Correlation Between Grain Boundaries and Ferroelectric Switching Behaviors Through Statistical Analysis of Local C-V Map Datasets

    Yoshiomi Hiranaga, Yuki Noguchi, Takanori Mimura, Takao Shimizu, Hiroshi Funakubo and Yasuo Cho

    2023 ISAF-ISIF-PFM Joint Conference 2023/07/24

  33. Heat-Assisted Ferroelectric Reading for Scanning Nonlinear Dielectric Microscopy

    Yasuo Cho, Yoshiomi Hiranaga

    2023 ISAF-ISIF-PFM Joint Conference 2023/07/23

  34. 局所C-Vマッピング法を用いた強誘電体メモリ材料のナノスケールドメイン挙動分析

    平永 良臣,長 康雄

    マルチメディアストレージ研究会 2023/06/09

  35. 局所C-Vマッピング法を用いたグレイン境界と強誘電分極反転挙動の関係に関する解析

    平永 良臣,野口 雄貴,三村 和仙,清水 荘雄,舟窪 浩,長 康雄

    第40回強誘電体会議 2023/05/24

  36. 局所C-Vマップの機械学習解析に基づくグレイン境界と強誘電ドメイン挙動の相関に関する統計的評価

    平永 良臣, 野口 雄貴, 三村 和仙, 清水 荘雄

    第70回応用物理学会春季学術講演会 2023/03/16

  37. SNDM強誘電体プローブメモリにおける超高速再生法の提案

    長 康雄, 平永 良臣

    第70回応用物理学会春季学術講演会 2023/03/15

  38. 局所C-Vマッピング法による強誘電体薄膜のナノスケール分極反転ダイナミクスのクラスタ解析

    平永 良臣, 三村 和仙, 清水 荘雄, 舟窪 浩, 長 康雄

    第83回応用物理学会秋季学術講演会 2022/09/20

  39. Recording Medium Design Aiming at Realizing Ferroelectric Probe Data Storage

    Yoshiomi Hiranaga, Yasuo Cho

    The Sixth International Symposium on Dielectric Materials and Applications 2021/12/17

  40. Nanoscale Domain Dynamics Characterization Using Local C-V Mapping Invited

    Yoshiomi Hiranaga and Yasuo Cho

    The Sixth International Symposium on Dielectric Materials and Applications 2021/12/15

  41. Control of Ferroelectric Property in (Al1-xScx)N Films Prepared by Sputtering Method

    Hiroshi Funakubo, Shinnosuke Yasuoka, Ryoichi Mizutani, Takahisa Shiraishi, Akinori Tateyama, Takao Shimizu, Masato Uehara, Hiroshi Yamada, Morito Akiyama, Yoshiomi Hiranaga, Yasuo Cho

    2021 MRS Fall Meeting & Exhibit 2021/11/29

  42. 内因的非線形誘電率の温度依存性と強誘電体プローブデータストレージにおける媒体材料設計

    平永良臣, 長康雄

    第38回強誘電体会議 2021/06/03

  43. 局所 C-V 曲線で観るナノスケール強誘電分極反転挙動

    平永良臣, 三村和仙, 清水荘雄, 舟窪浩, 長康雄

    第38回強誘電体会議 2021/06/02

  44. Downscaling and Low Temperature Deposition of Ferroelectric (Al1-xScx)N Thin Films Deposited by Dual Sputtering

    Shinnosuke Yasuoka, Takao Shimizu, Masato Uehara, Hiroshi Yamada, Morito Akiyama, Yoshiomi Hiranaga, Yasuo Cho, Hiroshi Funakubo

    IEEE ISAF-ISIF-PFM 2021 Virtual Conference 2021/05/19

  45. Local C-V Characterization for Ferroelectric Films

    Yoshiomi Hiranaga, Takanori Mimura, Takao Shimizu, Hiroshi Funakubo, Yasuo Cho

    IEEE ISAF-ISIF-PFM 2021 Virtual Conference 2021/05/19

  46. 局所C-Vマッピングを用いた強誘電分極反転挙動のナノスケール評価

    平永 良臣, 長 康雄

    第68回応用物理学会春季学術講演会 2021/03/18

  47. 強誘電体薄膜における分極反転挙動のナノスケールマッピング

    平永 良臣, 三村 和仙, 清水 荘雄, 舟窪 浩, 長 康雄

    第68回応用物理学会春季学術講演会 2021/03/16

  48. Intirinsic Nonlinear Permittivity Enhancement Through Curie-Point Control Aimimg at Improving Readout Speed in Ferroelectric Probe Data Storage

    Yoshiomi Hiranaga, Yasuo Cho

    IEEE IFCS-ISAF 2020 Virtual Conference 2020/07/20

  49. キュリー点制御による内因的⾮線形誘電率の増⼤とその強誘電体プローブデータストレージへの応⽤

    平永良臣,長康雄

    第67回応用物理学会春季学術講演会 2020/03/14

  50. 高調波∂C/∂z-SNDM信号を用いた半導体評価

    平永良臣, 長康雄

    第39回ナノテスティングシンポジウム 2019/11/18

  51. SNDM強誘電体プローブデータストレージの再生信号強度に関する現象論的考察

    平永 良臣, 長 康雄

    第80回応用物理学会秋季学術講演会 2019/09/19

  52. High-Resolution Observation of Ferroelectric Domains Using Scanning Nonlinear Dielectric Microscopy With Ultra Sharp Diamond Probe

    Tomotaka Ishida, Yoshiomi Hiranaga, Yasuo Cho

    Asia-Pacific PFM 2019 2019/08/12

  53. ∂C/∂z-Mode Scanning Nonlinear Dielectric Microscopy for Linear Permittivity Imaging Invited

    Yoshiomi Hiranaga, Yasuo Cho

    Asia-Pacific PFM 2019 2019/08/12

  54. 二重バイアス変調静電気力顕微鏡を用いた局所誘電緩和測定

    平永 良臣, 長 康雄

    第36回強誘電体応用会議 2019/05/30

  55. 極細導電性探針を用いた高分解能強誘電ドメイン観察

    石田知嵩, 平永良臣, 長康雄

    第66回応用物理学会春季学術講演会 2019/03/11

  56. 二重バイアス変調静電引力顕微鏡を用いたポリフッ化ビニリデンの誘電緩和測定

    平永良臣, 長康雄

    第66回応用物理学会春季学術講演会 2019/03/11

  57. 高調波∂C/∂z-SNDM信号を用いた半導体キャリア分布観察

    平永良臣, 長康雄

    第66回応用物理学会春季学術講演会 2019/03/09

  58. Nanoscale Linear Dielectric Constant Imaging Using ∂C/∂z -Mode Scanning Nonlinear Dielectric Microscopy

    Yoshiomi Hiranaga, Yasuo Cho

    2018 MRS Fall Meeting & Exhibit 2018/11/28

  59. ∂C/∂z-SNDM による半導体評価に関する数値シミュレーション

    平永 良臣, 長 康雄

    第38回ナノテスティングシンポジウム 2018/11/19

  60. Nanoscale Permittivity Imaging Using ∂C/∂z-mode Scanning Nonlinear Dielectric Microscopy

    Y. Hiranaga, Y. Cho

    ACSIN-14 & ICSPM26 2018/10/25

  61. ∂C/∂z-SNDM法による半導体ドーパント濃度測定に関する数値シミュレーション

    平永 良臣, 長 康雄

    第79回応用物理学会秋季学術講演会 2018/09/19

  62. Nanoscale Linear Permittivity Imaging Based on Scanning Nonlinear Dielectric Microscopy

    Yoshiomi Hiranaga, Yasuo Cho

    IUMRS-ICEM 2018 2018/08/21

  63. ∂C/∂z-mode scanning nonlinear dielectric microscopy for imaging nanoscale linear permittivity

    Yoshiomi Hiranaga, Yasuo Cho

    ICN+T2018 2018/07/27

  64. Imaging of nanoscale linear permittivity by using ∂C/∂z-mode scanning nonlinear dielectric microscopy

    Yoshiomi Hiranaga, Yasuo Cho

    Electroceramics XVI 2018/07/09

  65. ∂C/∂z-Mode Scanning Nonlinear Dielectric Microscopy for Local Permittivity Imaging

    Yoshiomi Hiranaga, Yasuo Cho

    ECAPD-2018 2018/06/27

  66. Improved readout speed in ferroelectric probe data storage with large nonlinear permittivity media

    Reshan Maduka Abeysinghe, Yoshiomi Hiranaga, Yasuo Cho

    ECAPD-2018 2018/06/25

  67. ∂C/∂z-mode SNDM for imaging nanoscale linear permittivity Invited

    Yoshiomi HIRANAGA, Yasuo CHO

    The 3rd International Symposium on“Recent Trends in the Elucidation and Function Discovery of Next Generation Functional Materials of Surface / Interface Properties 2018/06/19

  68. Local Permittivity Measurement Using ∂C/∂z-Mode Scanning Nonlinear Dielectric Microscopy

    Y. HIRANAGA, Y. CHO

    2018 ISAF-FMA-AMF-AMEC-PFM Joint Conference 2018/05/31

  69. HDD Type High Speed Data Readout Demonstrations in Ferroelectric Data Storage Using Pb(Zr,Ti)O3 Recording Medium

    R. M. ABEYSINGHE, Y. HIRANAGA, Y. CHO

    2018 ISAF-FMA-AMF-AMEC-PFM Joint Conference 2018/05/31

  70. Nanoscale Linear Permittivity Measurement Using Scanning Nonlinear Dielectric Microscopy Invited

    Yoshiomi Hiranaga, Yasuo Cho

    Third International Symposium on Dielectric Materials and Applications 2018/04/18

  71. バイアス掃引SNDM法による分極反転特性の面内分布観察

    平永 良臣, 長 康雄

    第65回応用物理学会春季学術講演会 2018/03/19

  72. Demonstration of High Speed Reading in Ferroelectric Data Storage Using Pb(Zr,Ti)O3 Recording Medium

    Reshan Maduka Abeysinghe, Yoshiomi Hiranaga, Yasuo Cho

    電子情報通信学会磁気記録・情報ストレージ研究会(MR) 2017/12/07

  73. SNDMによる分極反転過程の動的観察

    平永良臣, 三村和仙, 清水荘雄, 舟窪浩, 長康雄

    第34回強誘電体応用会議 2017/05/31

  74. Dynamic Observation of Nanoscale Domain Switching Behaviors in Ferroelectric HfO2 films Using Scanning Nonlinear Dielectric Microscopy

    Y. Hiranaga, T. Mimura, T. Shimizu, H. Funakubo, Y. Cho

    2017 Joint IEEE ISAF-IWATMD-PFM 2017/05/07

  75. Ferroelectric Probe Data Storage Using HfO2-Based Thin-Film Recording Media

    Y. Hiranaga, T. Mimura, T. Shimizu, H. Funakubo, Y. Cho

    2017 Joint IEEE ISAF-IWATMD-PFM 2017/05/07

  76. ∂C/∂z-SNDM法によるナノスケール線形誘電率分布の定量測定

    平永良臣, 茅根慎通, 長康雄

    第64回応用物理学会春季学術講演会 2017/03/14

  77. 走査型非線形誘電率顕微鏡を用いたナノスケール分極反転過程の動的観察

    平永良臣, 三村和仙, 清水荘雄, 舟窪浩, 長康雄

    第64回応用物理学会春季学術講演会 2017/03/14

  78. Y添加HfO2薄膜における強誘電ドメイン反転のSNDM観察

    平永良臣, 長康雄, 三村和仙, 清水荘雄, 舟窪浩

    電子情報通信学会磁気記録・情報ストレージ研究会(MR) 2016/12/08

  79. SNDM線形誘電率ナノイメージングにおける高調波信号像

    平永良臣, 茅根慎通, 長 康雄

    第77回応用物理学会秋季学術講演会 2016/09/13

  80. Nanoscaled Permittivity Distribution Imaging Using an SNDM Probe

    Y. Hiranaga, N. Chinone, K. Hirose, Y. Cho

    2016 Joint ISAF/ECAPD/PFM Conference 2016/08/21

  81. Ferroelectric Nanodomain Observation in Yttrium-Doped HfO2 Thin Films Using Scanning Nonlinear Dielectric Microscopy

    Z. Chen, Y. Hiranaga, T. Shimizu, K. Katayama, T. Mimura, H. Funakubo, Y. Cho

    2016 Joint ISAF/ECAPD/PFM Conference 2016/08/21

  82. SNDMによる線形誘電率ナノイメージング

    平永良臣, 茅根慎通, 廣瀬光太郎, 長康雄

    第33回強誘電体応用会議 2016/05/25

  83. 走査型非線形誘電率顕微鏡における強誘電性Y:HfO2薄膜のドメイン反転

    陳舟, 平永良臣, 清水荘雄, 片山きりは, 三村和仙, 舟窪浩, 長康雄

    第63回応用物理学会春季学術講演会 2016/03/21

  84. 走査型非線形誘電率顕微鏡を用いたdC/dVとdC/dz測定によるキャリア濃度の定量化に関する研究

    劉彬, 平永良臣, 茅根慎通, 長康雄

    第63回応用物理学会春季学術講演会 2016/03/19

  85. SNDM線形誘電率ナノイメージングにおける空間分解能の数値解析

    平永良臣, 茅根慎通, 長康雄

    第63回応用物理学会春季学術講演会 2016/03/19

  86. SNDM線形誘電率ナノイメージングに関する有限要素法シミュレーション

    平永良臣, 茅根慎通, 長康雄

    第63回応用物理学会春季学術講演会 2016/03/19

  87. 強誘電性Y:fO2薄膜におけるナノスケールドメイン反転

    陳舟,平永良臣,長康雄, 清水荘雄,片山きりは,三村和仙,舟窪浩

    電子情報通信学会磁気記録・情報ストレージ研究会(MR) 2016/03/04

  88. 強誘電体プローブデータストレージ~現状と今後の展開~

    平永良臣, 長康雄

    電子情報通信学会磁気記録・情報ストレージ研究会(MR) 2015/12/10

  89. Hard-Disk-Drive-Type Ferroelectric Data Recording with Memory Density over 1 Tbit/inch2 Based on Scanning Nonlinear Dielectric Microscopy Invited

    Tomonori Aoki, Yoshiomi Hiranaga, Yasuo Cho

    2015 MRS fall meeting 2015/11/29

  90. SNDMプローブによる線形誘電率分布の新規測定法を用いた誘電体薄膜の評価

    平永良臣, 茅根慎通, 廣瀬光太郎, 長 康雄

    第76回応用物理学会秋季学術講演会 2015/09/13

  91. SNDMプローブを用いたナノスケール線形誘電率分布マッピング

    平永良臣, 茅根慎通, 廣瀬光太郎, 長 康雄

    第76回応用物理学会秋季学術講演会 2015/09/13

  92. Charge Gradient Microscopy : Electromechanical Charge Scraping and Refill of Screening Charges Invited

    Seungbum Hong, Sheng Tong, Yoon-Young Choi, Woon Ik Park, Liliana Stan, Yoshiomi Hiranaga, Yasuo Cho

    MMC 2015 2015/06/29

  93. Read/Write Demonstration of Ferroelectric Probe Data Storage with a Density Exceeding 1 Tbit/inch2

    T. Aoki, Y. Hiranaga, Y. Cho

    13th EUROPEAN MEETING ON FERROELECTRICITY 2015/06/28

  94. Surface Analytical Study on Ferroelectric Recording Media Using XPS and SNDM

    Y. Hiranaga, Y. T. Chen, Y. Cho

    13th EUROPEAN MEETING ON FERROELECTRICITY 2015/06/28

  95. イオンビーム照射による薄膜強誘電体記録媒体の表面層の除去

    平永良臣, 長康雄

    電子情報通信学会磁気記録・情報ストレージ研究会(MR) 2015/06/04

  96. Data Bit Recording with a Density Exceeding 1 Tbit/inch2 Using an HDD-Type Ferroelectric Probe Data Storage Unit

    T. Aoki, Y. Hiranaga, Y. Cho

    2015 JOINT ISAF-ISIF-PFM CONFERENCE 2015/05/24

  97. Effect of Ion Beam Irradiation on Recording Media of Ferroelectric Probe Data Storage

    Y. Hiranaga, Y. T. Chen, Y. Cho

    2015 JOINT ISAF-ISIF-PFM CONFERENCE 2015/05/24

  98. X線光電子分光法によるPZT薄膜記録媒体の分析とイオンビーム照射による表面層の除去

    平永良臣, 陳一桐, 長康雄

    第32回強誘電体応用会議 2015/05/20

  99. HDD型強誘電体プローブデータストレージ試験装置における高密度ビット列の記録・再生

    青木朋徳, 平永良臣, 長康雄

    第32回強誘電体応用会議 2015/05/20

  100. 強誘電体プローブデータストレージ用PZT 薄膜媒体の表面層のXPS 測定

    平永良臣, 陳 一桐, 長康雄

    第62回応用物理学会春季学術講演会 2015/03/13

  101. 強誘電体プローブデータストレージ

    平永良臣, 青木 朋徳, 陳 一桐, 長康雄

    第62回応用物理学会春季学術講演会 2015/03/12

  102. ハードディスクドライブ型強誘電体記録装置における更なる高密度化とビット列の実時間再生

    青木 朋徳, 平永良臣, 長康雄

    第62回応用物理学会春季学術講演会 2015/03/11

  103. Charge Gradient Microscopy:Electromechanical Charge Scraping at the Nanoscale Invited

    S. Hong, S. Tong, Y. Choi, W. Park, Y. Hiranaga, Y. Cho, A. Roelofs

    EMA2015 2015/01/21

  104. ハードディスクドライブ型強誘電体記録における更なる高密度化の達成と記録・再生の一連動作の実現

    青木朋徳, 平永良臣, 長康雄

    電子情報通信学会磁気記録・情報ストレージ研究会 2014/12/11

  105. 非線形誘電率顕微鏡法を用いたPZT薄膜材料記録に関する研究

    陳一桐, 平永良臣, 長康雄

    電子情報通信学会磁気記録・情報ストレージ研究会 2014/11/25

  106. RFマグネトロンスパッタ法により作製したPZT薄膜媒体へのナノドメインドットの書き込み

    平永良臣, 長康雄

    第75回応用物理学会秋季学術講演会 2014/09/17

  107. Charge gradient microscopy: high-speed visualization of polarization charges using a nanoscale probe

    Seungbum Hong, Sheng Tong, Woon Ik Park, Yoshiomi Hiranaga, Yasuo Cho, Andreas Roelofs

    NSS8 2014 2014/07/28

  108. 強誘電体プローブデータストレージ用記録媒体の非線形誘電率の測定

    平永良臣,長康雄

    電子情報通信学会磁気記録・情報ストレージ研究会 2014/06/12

  109. RFマグネトロンスパッタ法によるプローブデータストレージ用PZT薄膜媒体の作製

    平永 良臣,長康雄

    第31回強誘電体応用会議 2014/05/29

  110. Measurement of Nonlinear Dielectric Constants of PZT Thin Films used in Ferroelectric Probe Data Storage Technology

    Y. Hiranaga, Y. Cho

    2014 Joint IEEE ISAF-IWATMD-PFM 2014/05/12

  111. Charge Gradient Microscopy: A Method to Image Ferroelectric and Piezoelectric Domains

    Andreas Roelofs, Sheng Tong, Woon Ik Park, Yoshiomi Hiranaga, Yasuo Cho, Seungbum Hong

    2014 MRS Spring Meeting 2014/04/21

  112. プローブデータストレージ用PZT薄膜媒体の非線形誘電率分布

    平永良臣,長康雄

    第61回応用物理学会春季学術講演会 2014/03/19

  113. ハードディスクドライブ型強誘電体記録装置を用いた高密度記録

    青木朋徳,平永良臣,長康雄

    第61回応用物理学会春季学術講演会 2014/03/17

  114. 2Tbit/inch2の記録密度を持つハードディスクドライブ型強誘電体記録に関する基礎実験

    青木朋徳,平永良臣,長康雄

    電子情報通信学会磁気記録・情報ストレージ研究会 2014/01/24

  115. SrTiO3基板上に成膜したPZT薄膜の非線形誘電率測定

    平永良臣,長 康雄

    第74回応用物理学会秋季学術講演会 2013/09/19

  116. 動的測定法による強誘電体薄膜の非線形誘電率測定

    平永 良臣,長 康雄

    第30回強誘電体応用会議 2013/05/23

  117. Super Higher Order Nonlinear Dielectric Microscopy with Super High Resolution

    Norimichi Chinone, Kohei Yamasue, Yoshiomi Hiranaga Koichiro Honda, Yasuo Cho

    2012 MRS fall meeting 2012/11/25

  118. Resolution improvement of scanning nonlinear dielectric microscopy by measuring the super higher-order nonlinear dielectric constants

    N. Chinone, K. Yamasue, Y. Hiranaga, K. Honda and Y. Cho

    The 15th European Microscopy Congress 2012 manchester 2012/09/16

  119. 動的測定法によるPZT薄膜の非線形誘電率測定

    平永良臣,長康雄

    第73回応用物理学会学術講演会 2012/09/14

  120. Super-higher order nonlinear dielectric microscopy studies on ferroelectric materials and semiconductor devices

    N. CHINONE, K. YAMASUE, Y. HIRANAGA, K. HONDA, and Y. CHO

    International Conference on Nanoscience + Technology 2012 2012/07/23

  121. 超高次非線形誘電率顕微鏡を用いた強誘電体ナノ分極の観察

    茅根慎通,山末耕平,平永良臣,長康雄

    第29回強誘電体応用会議 2012/05/25

  122. Super Higher-Order Nonlinear Dielectric Microscopy

    N. Chinone, K. Yamasue, Y. Hiranaga, Y. Cho

    The 19th International Colloquium on Scanning Probe Microscopy 2011/12/20

  123. 強誘電体ドメインのナノスケール選択エッチング

    平永良臣,長康雄

    第58回応用物理学関係連合講演会 2011/03/26

  124. 強誘電体回転ディスク記録方式におけるシングルトラック記録・再生

    木本康宏,平永良臣,長康雄

    第58回応用物理学関係連合講演会 2011/03/26

  125. 強誘電体ディスクリート記録媒体に関する基礎的研究

    隅山直樹,平永良臣,長康雄

    第58回応用物理学関係連合講演会 2011/03/26

  126. Ferroelectric Super-High Density Data Storage Based on Scanning Nonlinear Dielectric Microscopy Invited

    Yasuo Cho, Kenkou Tanaka, and Yoshiomi Hiranaga

    The 3rd International Symposium on Innovations in Advanced Materials for Optics & Electronics 2010/10/17

  127. 強誘電体ディスクリート媒体の作製とデータ記録に関する研究

    隅山直樹, 平永良臣

    第57回応用物理学関係連合講演会 2010/03/17

  128. Development of Ferroelectric Data Storage Test System for High - Density and High - Speed Read/Write

    Yoshiomi Hiranaga, Kenkou Tanaka, Tomoya Uda, Yuichi Kurihashi, Yasuhiro Kimoto, Hikari Tochishita, Michio Kadota, Yasuo Cho

    2009 MRS fall meeting 2009/12/03

  129. Nano-Domain Formation on Ferroelectrics and Development of HDD-Type Ferroelectric Data Storage Test system International-presentation

    Yoshiomi Hiranaga, Tomoya Uda, Yuichi Kurihashi, Yasuo Cho, Michio Kadota and Hikari Tochisita

    21st International Symposium on Integrated Ferroelectric and Functionalities 2009/09/29

  130. 強誘電ナノ分極反転とHDD型強誘電体記録デバイスの開発

    平永良臣, 夘田知也, 栗橋悠一, 長康雄(村田製作所, 門田道雄, 栃下光

    第26回強誘電体応用会議 2009/05/30

  131. ハードディスクドライブ型SNDM強誘電体記録装置を用いた高速記録・再生試験

    栗橋悠一, 平永良臣, 長康雄

    第56回応用物理学関係連合講演会 2009/03/31

  132. 湿度制御化におけるナノドメイン反転

    平永良臣, 長康雄

    第56回応用物理学関係連合講演会 2009/03/31

  133. LiTaO3薄膜への高密度記録及びデータ再生試験

    木本康宏, 栗橋悠一, 平永良臣, 長康雄

    第56回応用物理学関係連合講演会 2009/03/30

  134. Next Generation Ferroelectric high Density Data Storage Based on Scanning Nonlinear Dielectric Microscopy International-presentation Invited

    Yasuo Cho, Yoshiomi Hiranaga, Kenkou Tanaka, Yuichi Kurihashi, and Tomoya Uda

    The 2nd IEEE Nanotechnology Materials and Devices Conference 2008/10/20

  135. 定比組成LiTaO3単結晶分極反転特性に対するイオンビーム照射の影響

    畑中佑紀, 平永良臣, 長康雄

    第69回応用物理学会学術講演会 2008/09/02

  136. Noncontact probe control of ferroelectric data storage system based on SNDM International-presentation

    Tomoya Uda, Yoshiomi Hiranaga and Yasuo Cho

    The 7th Korea-Japan Conference on Ferroelectricity 2008/08/06

  137. High Speed Read/Write Using HDD-type SNDM Ferroelectric Data Storage System with Single Probe International-presentation

    Yuichi Kurihashi, Yoshiomi Hiranaga and Yasuo Cho

    The 7th Korea-Japan Conference on Ferroelectricity 2008/08/06

  138. Scanning Nonlinear Dielectric Microscopy Nano Science and Technology for Next Generation High Density Ferroelectric Data Storage International-presentation Invited

    Yasuo Cho, Kenkou Tanaka, Yuichi Kurihashi, Tomoya Uda, Yasuhiro Daimon, Nozomi Odagawa, Ryusuke Hirose and Yoshiomi Hiranaga

    20th International Symposium on Integrated Ferroelectrics 2008/06/09

  139. Fast Data Read/Write Using Novel HDD-Type Ferroelectrics Data Storage System International-presentation

    Yoshiomi Hiranaga and Yasuo Cho

    20th International Symposium on Integrated Ferroelectrics 2008/06/09

  140. HDD型強誘電体記録デバイスにおける高速記録再生

    平永良臣, 夘田知也, 栗橋悠一, 長 康雄

    第25回強誘電体応用会議 2008/05/30

  141. 強誘電体材料を用いた薄片化単結晶記録媒体の大面積化

    ブイヤン モイヌル, 平永良臣, 長康雄

    第55回応用物理学関係連合講演会 2008/03/30

  142. NC-SNDM法を用いた強誘電体記録における非接触書き込み(2)

    夘田知也, 平永良臣, 長康雄

    第55回応用物理学関係連合講演会 2008/03/29

  143. 間欠接触走査型非線形誘電率顕微鏡の開発

    平永良臣, 長康雄

    第55回応用物理学関係連合講演会 2008/03/28

  144. NC-SNDM法を用いた強誘電体記録における非接触書き込み

    夘田知也, 平永良臣, 長康雄

    第68回応用物理学会学術講演会 2007/09/07

  145. ハードディスクドライブ型強誘電体記録装置を用いた高速再生試験

    栗橋悠一, 平永良臣, 長康雄

    第68回応用物理学会学術講演会 2007/09/07

  146. 高次非線形透磁率顕微鏡法における探針磁化効果と非接触計測への応用

    高橋和志, 石川健哉, 平永良臣, 廣瀬龍介, 遠藤誠, 長康雄

    第68回応用物理学会学術講演会 2007/09/07

  147. Recent progress on ultra high density SNDM ferroelectric probe memory International-presentation Invited

    Y. Cho, Y. Hiranaga, K. Tanaka, N. Odagawa, T. Uda, Y. Kurihashi

    Materials Today Asia 2007/09/03

  148. Non-Contact Probe Control and High-Speed Writing for Rotated-Disk-Type Ferroelectric Data Storage Devices Invited

    Y. Hiranaga, T. Uda, Y. Kurihashi, K. Tanaka, N. Odagawa and Y. Cho

    The 16th IEEE International Symposium on the Applications of Ferroelectrics 2007/05/27

  149. Scanning Nonlinear Dielectric Microscopy With Atomic Resolution For High Density Ferroelectric Data Storage

    Yasuo Cho, Ryusuke Hirose, Nozomi Odagawa, Kenkou Tanaka and Yoshiomi Hiranaga

    19th International Symposium of Integrated Ferroelectrics 2007/05/08

  150. 回転ディスク型強誘電体記録装置を用いた高速記録試験

    栗橋悠一, 平永良臣, 長 康雄

    第54回応用物理学関係連合講演会 2007/03/30

  151. NC-SNDM法を用いた回転ディスク型強誘電体記録再生装置の非接触制御

    夘田知也, 平永良臣, 長 康雄

    第54回応用物理学関係連合講演会 2007/03/29

  152. Ferroelectric nano-domain manipulation for next generation ultrahigh density data storage International-presentation Invited

    Yasuo Cho, Yoshiomi Hiranaga, Kenkou Tanaka and Nozomi Odagawa

    The 17th Symposium of The Materials Research Society of Japan 2006/12/08

  153. Ferroelectric Ultra High-Density Data Storage Based on Scanning Nonlinear Dielectric Microscopy

    Yasuo Cho, Sunao Hashimoto, Nozomi Odagawa, Kenkou Tanaka and Yoshiomi Hiranaga

    2006 Non-Volatile Memory Technology Symposium 2006/11/05

  154. 回転ディスク型非接触強誘電体記録装置の開発

    夘田知也, 平永良臣, 長 康雄

    2006年電子情報通信学会エレクトロニクスソサイエティ大会 2006/09/19

  155. Ferroelectric nano-domain manipulation for next generation ultrahigh density data storage International-presentation Invited

    Yasuo Cho, Yoshiomi Hiranaga, Kenkou Tanaka, Sunao Hashimoto and Nozomi Odagawa

    8th European Conference on Applications of Polar Dielectrics 2006/09/05

  156. TERABIT PER SQUARE INCH INFORMATION DATA STORAGE ON FERROELECTRICS WITH BIT ERROR RATE International-presentation

    Yoshiomi Hiranaga, Yasuo Cho

    11th International Meeting on Ferroelectricity 2006/09

  157. 大面積を有するプローブメモリ用強誘電体単結晶記録媒体の作製と評価

    平永良臣, 長 康雄

    第67回応用物理学会学術講演会 2006/08/30

  158. Ferroelectric Data Storage with 10 Tbit/Inch2 Memory Density and Sub Nano-Second Domain Switching Time International-presentation Invited

    Yasuo Cho, Sunao Hashimoto, Nozomi Odagawa, Kenkou Tanaka and Yoshiomi Hiranaga

    The 6th Japan-Korea Conference on Ferroelectrics 2006/08/17

  159. Nanodomain Manipulation for Ferroelectric Data Storage with High Recording Density, Fast Domain Switching and Low Bit Error Rate

    Yoshiomi Hiranaga, Sunao Hashimoto, Nozomi Odagawa, Kenkou Tanaka and Yasuo Cho

    15th International Symposium on the Applications of Ferroelectrics 2006/07/31

  160. Ferroelectric Nano-Domain Manipulation for Next Generation Ultrahigh Density Data Storage International-presentation Invited

    Yasuo Cho, Yoshiomi Hiranaga, Kenkou Tanaka and Nozomi Odagawa

    International Conference on Nanoscience and Technology 2006 2006/07/30

  161. Nanodomain Manipulation for Ferroelectric Data Storage with High Recording Density Fast Domain Switching and Low Bit Error Rate International-presentation

    Yoshiomi Hiranaga, Sunao Hashimoto, Nozomi Odagawa, Kenkou Tanaka, Yasuo Cho

    15th International Symposium on the Applications of Ferroelectrics 2006/07

  162. Ferroelectric domain engineering for the ultra high-density data storage International-presentation Invited

    Yasuo Cho, Sunao Hashimoto, Nozomi Odagawa, Kenkou Tanaka and Yoshiomi Hiranaga

    The 9th International Symposium on Ferroic Domains and Micro-to Nanoscopic Structures 2006/06/26

  163. 回転ディスク型SNDM強誘電体プローブメモリの試作

    平永良臣, 長 康雄

    第23回強誘電体応用会議 2006/05/26

  164. Real Information Recording in Ferroelectric Data Stroage Medium with Memory Density of 1 Tbit/inch2

    Tanaka Kenkou, Hiranaga Yoshiomi and Yasuo Cho

    2005 MRS Fall Meeting 2005/11/28

  165. Ferroelectric Domain Engineering for the Ultra High-Density Data Storage with 10Tbit/inch2 Memory Density and Sub Nano-Second Switching Time International-presentation Invited

    Y. Cho, S. Hashimoto, N. Odagawa, K. Tanaka, and Y. Hiranaga

    International Symposium Micro- and Nano-scale Domain Structuring in Ferroelectrics (ISDS’05) 2005/11/15

  166. Real Information Storage Using Ferroelectrics with the Density of 1 Tbit/ inch2 International-presentation

    K. Tanaka, Y. Hiranaga, Y, Cho

    International Symposium Micro- and Nano-scale Domain Structuring in Ferroelectrics (ISDS’05) 2005/11/15

  167. 強誘電体高密度実データ記録のビット誤り率の向上

    田中健巧, 平永良臣, 長康雄

    第66回応用物理学会学術講演会 2005/09/09

  168. TERABIT PER SQUARE INCH INFORMATION DATA STORAGE ON FERROELECTRICS WITH BIT ERROR RATE

    Yoshiomi Hiranaga and Yasuo Cho

    11th International Meeting on Ferroelectricity 2005/09/05

  169. Ferroelectric data storage with 10Tbit/inch2 class memory density and sub-nanosecond switching time International-presentation

    Yasuo Cho, Sunao Hashimoto, Nozomi Odagawa, Kenkou Tanaka, Yoshiomi Hiranaga

    8th International Conference on non-contract Atomic Force Microscopy 2005/08/15

  170. Achievement of Low Bit Error Rate in Ferroelectric Ultrahigh-density Data Storage International-presentation

    Y. Hiranaga, K. Tanaka, and Y. Cho

    13th International Conference on Scanning Tunneling Microscopy/Spectroscopy and Related Techniques & 13th International Colloquium on Scanning Probe Microscopy 2005/07/03

  171. 低ビット誤り率特性を有する超高密度強誘電体記録

    平永良臣, 長康雄

    第22回強誘電体応用会議 2005/05/28

  172. 強誘電体高密度記録における10-5オーダーのビット誤り率の達成

    平永良臣, 長 康雄

    第52回応用物理学関係連合講演会 2005/03/30

  173. 1 Tbit/inch2 の記録密度を持つ強誘電体実データ記録

    田中健巧, 平永良臣, 長 康雄

    第52回応用物理学関係連合講演 2005/03/30

  174. Next Generation Ferroelectric Data Storage with The Density of Tbits/inch2 International-presentation Invited

    Y. Cho and Y. Hiranaga

    The 15th Symposium of The Material Research Society of Japan 2004/12/23

  175. Bit Error Evaluation of Tbit/inch2 Ferroelectric Data Storage International-presentation

    Yoshiomi Hiranaga and Yasuo Cho

    2004 MRS Fall Meeting 2004/11/29

  176. Ultra High Density Ferroelectric Data Storage Based on Scanning Nonlinear Dielectric Microscopy International-presentation

    Y. Cho and Y. Hiranaga

    Seventh International Conference on non-contact Atomic Force Microscopy 2004/09/12

  177. 非線形誘電率顕微鏡を用いたTbits/inch2の記録密度をもつ強誘電体記録

    長 康雄, 平永良臣

    電子情報通信学会 2004/09/09

  178. 走査型非線形誘電率顕微鏡を用いたLiTaO3単結晶記録媒体への高速データ記録

    田中健巧, 平永良臣, 長 康雄

    第65回応用物理学会学術講演会 2004/09/03

  179. 強誘電体記録におけるビット誤り率の自動評価

    平永良臣, 長 康雄

    第65回応用物理学会学術講演会 2004/09/03

  180. High-Speed Switching of Nano-Scale Ferroelectric Domains in Congruent Single Crystal LiTaO3 International-presentation Invited

    Yasuo Cho, Yoshiomi Hiranaga, and Kenjiro Fujimoto

    The 8th International Symposium on Ferroic Domains and Micro- to Nanoscopic Structures 2004/08/24

  181. 分極制御ウエットエッチング法による強誘電体単結晶記録媒体の作製と記録特性の評価

    平永良臣, 長 康雄

    第21回強誘電体応用会議 2004/05/27

  182. NOVEL PREPARATION METHOD FOR FERROELECTRIC SINGLE CRYSTAL DATA STORAGE MEDIA International-presentation

    Yoshiomi Hiranaga, Yasuo Wagatsuma and Yasuo Cho

    The 16th International Symposium on Integrated Ferroelectrics (ISIF2004) Symposium 2004/04/05

  183. 分極制御ウエットエッチング法により作製したLiTaO3単結晶記録媒体に対するデータ記録

    平永良臣, 長 康雄

    第51回応用物理学関係連合講演会 2004/03/28

  184. ウエットエッチング法による大面積強誘電体単結晶記録媒体の作製

    平永良臣, 我妻康夫, 長 康雄

    圧電材料・デバイスシンポジウム 2004/01/26

  185. STUDY ON NANO-DOMAIN FORMATION FOR FEROELECTRIC DATA STRAGE WITH THE DENSITY ABOVE 1 RBIT/INC2 International-presentation Invited

    Y.CHO, K.FUJIMOTO, Y.HIRANAGA, Y.WAGATSUMA AND A.ONOE

    4th Asian Meeting on Ferroelectrics(AMF-4) 2003/12/12

  186. First Prototype of High-Density Ferroelectric Data Storage System International-presentation

    Yoshiomi Hiranaga, Yasuo Cho and Yasuo Wagatsuma

    2003 MRS Fall Meeting 2003/12/01

  187. 走査型非線形誘電率顕微鏡を用いたSi3N4/SiO2/Si半導体基板への電荷記録

    橋本直, 平永良臣, 長康雄, 本田耕一郎

    2003年電子情報通信学会エレクトロニクスソサイエティ大会 2003/09/25

  188. 強誘電微小分極反転ドメインの生成とデータストレージシステムの試作

    平永良臣, 我妻康夫, 長康雄, 尾上篤

    2003年電子情報通信学会エレクトロニクスソサイエティ大会 2003/09/23

  189. ウエットエッチング法による大面積強誘電体単結晶記録媒体の作製

    平永良臣, 長 康雄, 我妻康夫

    第64回応用物理学会学術講演会 2003/08/31

  190. 一致溶融組成LiTaO3単結晶のP-Eヒステリシスと内部電界

    藤本健二郎, 平永良臣, 長 康雄

    第64回応用物理学会学術講演会 2003/08/31

  191. Tbit/inch2 Ferroelectric Data Storage Using SNDM Nano Domain Engineering System International-presentation

    Yasuo Cho, Yoshiomi Hiranaga, Kenjiro Fujimoto, Yasuo Wagatsuma, Atsushi Onoe, Kazuya Terabe and Kenji Kitamura

    The 10th European Meeting on Ferroelectricity 2003/08/03

  192. 非線形誘電率顕微鏡を用いた超高密度強誘電体記録再生

    平永良臣, 長 康雄, 藤本健二郎, 我妻康夫, 尾上篤

    第20回強誘電体応用会 2003/05/30

  193. 強誘電体高密度データストレージシステムの試作

    平永良臣, 長 康雄, 我妻康夫, 尾上篤

    第50回応用物理学関係連合講演会 2003/03/27

  194. 非線形誘電率顕微鏡を用いたTbit/inch2超の記録密度をもつ強誘電体記録

    長 康雄, 平永 良臣, 藤本健二郎

    圧電材料・デバイスシンポジウム2003 2003/02/27

  195. Tbit/inch2 ferroelectric data storage based on scanning nonlinear dielectric microscopy International-presentation

    Yasuo Cho, Yoshiomi Hiranaga, Kenjiro Fujimoto, Atsushi Onoe, Kazuya Terabe and Kenji Kitamura

    The 14th Symposium of The Material Research Society of Japan 2002/12/20

  196. Basic Study on High-density Ferroelectric Data Storage Using Scanning Nonlinear Dielectric Microscopy International-presentation

    Yoshiomi Hiranaga, Kenjiro Fujimoto, Yasuo Wagatsuma, Yasuo Cho, Atsushi Onoe, Kazuya Terabe, Kenji Kitamura

    2002 MRS Fall Meeting 2002/12/02

  197. 走査型非線形誘電率顕微鏡を用いた一致溶融組成LiTaO3における1.5Tbit/inch2高密度記録

    劉杰, 藤本健二郎, 平永良臣, 長 康雄, 我妻康夫, 尾上篤

    第63回応用物理学会学術講演会 2002/09/25

  198. 走査型非線形誘電率顕微鏡を用いた強誘電体高密度記録に関する基礎的研究

    平永良臣, 長 康雄, 我妻康夫, 尾上篤, 寺部一弥, 北村健二

    第63回応用物理学会学術講演会 2002/09/24

  199. Tbit/inch2 data storage using scanning nonlinear dielectric microscopy International-presentation

    Y. Cho, K. Fujimoto, Y. Hiranaga, Y. Wagatsuma, A. Onoe, K. Terabe and K. Kitamura

    7th International Symposium on Ferroic Domains and Mesoscopic Structures (ISFD7) 2002/09/15

  200. Tbit/inch2 ferroelectric data storage using SNDM nano domain engineering system International-presentation

    Yasuo Cho, Yoshiomi Hiranaga, Kenjiro Fujimoto, Yasuo Wagatsuma, Atsushi Onoe, Kazuya Terabe and Kenji Kitamura

    Trend in Nanotechnology 2002 (TNT2002) 2002/09/09

  201. Tbit/inch2 Ferroelectric data storage using scanning nonlinear dielectric microscopy International-presentation

    Yasuo Cho, Kenjiro Fujimoto, Yoshiomi Hiranaga, Jie Liu, Yasuo Wagatsuma, Atsushi Onoe, Kazuya Terabe and Kenji Kitamura

    2002 2nd IEEE Conference on Nanotechnology (IEEE-NANO 2002) 2002/08/26

  202. Basic study on high-density ferroelectric data storage using scanning nonlinear dielectric microscopy International-presentation

    Y. Hiranaga, K. Fujimoto, Y. Wagatsuma, Y. Cho, A. Onoe, K. Terabe and K. Kitamura

    The 4th Japan-Korea Conference on Ferroelectrics 2002/08/21

  203. 非線形誘電率顕微鏡を用いたTbit/inch2の記録密度をもつ強誘電体記録

    平永良臣, 藤本健二郎, 我妻康夫, 長 康雄, 尾上篤, 寺部一弥, 北村健二

    電子情報通信学会 2002/06/14

  204. Nano-Sized Inverted Domain Dot Formation in Stoichiometric LiTaO3 Single Crystal Using Scanning Nonlinear Dielectric Microscopy International-presentation

    Y. Hiranaga, Y. Cho, Y.Wagatsuma, K. Terabe and K. Kitamura

    International Joint Conference on the Application of Ferroelectrics 2002 (IFFF2002) 2002/05/28

  205. 走査型非線形誘電率顕微鏡を用いた定比組成LiTaO3単結晶におけるナノサイズ分極反転ドットの生成

    平永良臣,長康雄,数田聡,寺部一弥,北村建二

    第49回応用物理学関係連合講演会 2002/03/28

  206. Small Inverted Domain Dot Formation in Stoichiometric LiTaO3 Single Crystal Using Scanning Nonlinear Dielectric Microscopy International-presentation

    Yasuo Cho, Yoshiomi Hiranaga, Satoshi Kazuta, Kazuya Terabe and Kenji Kitamura

    MRS 2001 Fall Meeting 2001/11/26

  207. Small Inverted Domain Dot Formation in Ferroelectric Single Crystal Using Scanning Nonlinear Dielectric Microscopy International-presentation

    Y.Hiranaga, S. Kazuta, Y.Cho, K.Terabe nd K.Kitamura

    Ist International Meeting on Ferroelectric Random Access Memories 2001/11/19

  208. 走査型非線形誘電率顕微鏡を用いたLiTaO3における微小分極ドットの生成と安定性

    平永良臣, 長 康雄, 寺部一弥, 北村健二

    第62回応用物理学会学術講演会 2001/09/12

  209. 走査型非線形誘電率顕微鏡を用いたLiTaO3における微小分極反転ドットの生成

    平永良臣, 長 康雄, 数田聡, 寺部一弥, 北村建二

    平成13年度電気関係学会東北支部連合大会 2001/08/21

  210. Nano-Domain Formation on Ferroelectrics and Development of HDD-Type Ferroelectric Data Storage Test system

    Yoshiomi Hiranaga, Tomoya Uda, Yuichi Kurihashi, Yasuo Cho, Michio Kadota, Hikari Tochisita

    21st International Symposium on Integrated Ferroelectric and Functionalities

  211. Basic Study on High-density Ferroelectric Data Storage Using Scanning Nonlinear Dielectric Microscopy

    Yoshiomi Hiranaga, Kenjiro Fujimoto, Yasuo Wagatsuma, Atsushi Onoe, Kazuya Terabe, Kenji Kitamura

    2002 MRS Fall Meeting

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Research Projects 8

  1. 分極反転ダイナミクスの実空間観察に基づく強誘電体薄膜の分極疲労メカニズムの解明

    平永 良臣, 小林 正治

    Offer Organization: 日本学術振興会

    System: 科学研究費助成事業

    Category: 基盤研究(B)

    Institution: 東北大学

    2024/04/01 - 2028/03/31

  2. マイクロ波エンハンス電気化学歪み顕微鏡の原理解明とイオン伝導体等の評価への展開

    平永 良臣

    Offer Organization: 日本学術振興会

    System: 科学研究費助成事業

    Category: 挑戦的研究(萌芽)

    Institution: 東北大学

    2021/07/09 - 2024/03/31

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    本研究課題は,局所イオン導電率のイメージングにおけるマイクロ波エンハンス効果を利用した,新たなナノスケール物性評価手法を開発するものである.具体的には,1.電池用材料(正極材・負極材・固体電解質)に対するマイクロ波エンハンスESM評価,2.電池用材料以外のイオン伝導体材料に対するマイクロ波エンハンスESM評価,3.上記以外の不純物や結晶欠陥を含む材料(低イオン導電率材料)に対するマイクロ波エンハンスESM評価,4.マイクロ波によりESM信号がエンハンスされるメカニズムの解明に関する研究を今後行い,これを通じて本手法を用いた各種デバイスの劣化メカニズムの微視的解析手法の開発,あるいは逆に欠陥を積極的に利用した新原理に基づくデバイスの創出に繋げるといった応用展開を目指すものである.2021年度はこれらの研究遂行を行うための計測装置のセットアップを行った.これを用いて,次世代リチウムイオン電池用酸化物系固体電解質の一つであるランタンリチウムチタン酸化物(LLTO)の観察を行い,マイクロ波電界を印加しながら測定を行うことで,未印加時に比べて応答信号強度が劇的に増大することを確認した.加えて,同装置を用いてタンタル酸リチウム(LiTaO3)単結晶の観察を行い,同様のマイクロ波エンハンス効果が見られることを確認した.LiTaO3は室温ではほとんどイオン電導性を示さない結晶である.これは,同手法によって絶縁物中の結晶欠陥由来の通常は極めて低い導電率が,マイクロ波電界の印加によって増大し,応答信号の増大をもたらすといった可能性を示唆する結果である.

  3. SNDMを用いた誘電率ナノイメージング手法の開発と材料・デバイス評価への展開

    平永 良臣

    Offer Organization: 日本学術振興会

    System: 科学研究費助成事業

    Category: 基盤研究(C)

    Institution: 東北大学

    2018/04/01 - 2023/03/31

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    本研究課題では,∂C/∂z-SNDM法の基礎を構築し,ナノスケール空間分解能で線形誘電率の分布の可視化,および絶対値計測が可能となる技術の確立を行うことを目的として,研究を遂行している.2021年度は∂C/∂z-SNDM法における線形誘電率の定量計測の方法の確立,表面形状アーティファクト補正方法の開発,高分解能化,および,多様な測定対象への展開に関する研究を継続して行った.また,これに加え,派生的な研究成果として,同じSNDMをベースとする強誘電体に関する新たな微視的評価手法である,局所C-Vマッピング法を新たに開発した.同手法は,SNDMを計測プローブとし,強誘電体サンプルに大振幅交流バイアス電圧を印加した際に生じる静電容量変化を高感度に検出し,これを空間的にマッピングする計測手法である.得られた静電容量応答はバタフライカーブという,強誘電体特有のカーブを描く.これを詳細に解析することによって,強誘電体の分極反転挙動(ドメインダイナミクス)をナノスケールの空間分解能で実空間において可視化することができる.本手法を用いて強誘電体薄膜,具体的にはHfO2基強誘電体薄膜のドメインダイナミクス分布の評価に適用可能であることを示した.さらに,得られたデータセットから特徴量を抽出することによって,正味の反転可能分極量や抗電界の空間分布,および局所的なインプリント(P-Eヒステリシスカーブの電界方向のシフト)の実空間分布を可視化できることを示した.

  4. Origin elucidation of the problems in the interface electric charge transportation phenomenon using scanning nonlinear dielectric microscopy

    Offer Organization: Japan Society for the Promotion of Science

    System: Grants-in-Aid for Scientific Research

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

    Institution: Tohoku University

    2016/05/31 - 2021/03/31

  5. 界面電荷輸送現象解明のための高機能走査型非線形誘電率顕微鏡群の研究開発

    長 康雄, 山末 耕平, 平永 良臣

    Offer Organization: 日本学術振興会

    System: 科学研究費助成事業

    Category: 基盤研究(A)

    Institution: 東北大学

    2016/04/01 - 2017/03/31

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    界面電荷輸送現象における諸問題の起源解明のための,新規多機能・高性能走査型非線形誘電率顕微鏡(SNDM)群を研究開発する.具体的には局所Deep-level transient spectroscopy(DLTS)法の行えるSNDM装置と走査型非線形誘電率常磁性共鳴顕微鏡法(SNDMR)を新規に開発のする.また近年開発してきた走査型非線形誘電率ポテンショメトリ(SNDP)法や,原子分解能非接触走査型非線形誘電率顕微鏡(NC-SNDM)法,超高次走査型非線形誘電率顕微鏡法(SHO-SNDM)の更なる高度化を図りそれらを総て組み合わせ,半導体MOS界面やグラフェン/SiCの移動度低下の原因を特定し,半ば永遠の工学的問題とされて来た問題を一挙に解決できる装置群とする.ひいては界面(表面)を使った半導体デバイスや伝導デバイスの性能を飛躍的に向上させる事に貢献する事を目的とする. この目的を達成するため本年度は ①超高次非線形誘電率顕微鏡法(SHO-SNDM)の更なる高度化. ②原子分解能非接触SNDM(NC-SNDM)法並びに界面評価用非線形誘電率ポテンショメリ(SNDP)の高度化. ③局所DLTS法の開発. を行う予定であったが研究を開始した直後,基盤研究(S)に採択され,重複制限に該当するため本基盤研究(A)は取り消しとなった.そのため実質的に研究できる期間は皆無であり,当然のことながら研究実績も一切無い.

  6. High functionalization of nonlinear dielectric microscopy and its application to electronic devices

    Cho Yasuo

    Offer Organization: Japan Society for the Promotion of Science

    System: Grants-in-Aid for Scientific Research

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

    Institution: Tohoku University

    2011/04/01 - 2016/03/31

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    New SNDM family method, which measures not only dC/dV term but also higher order differentiation terms, has been developed. Using this method, we can obtain much more precise physical information of materials and devices. We name this technique super-higher-order scanning nonlinear dielectric microscopy (SHO-SNDM). We can easily reconstruct C-V curve at each pixel with this method. As a result, the analysis ability is drastically improved.Next, we have developed scanning nonlinear dielectric potentiometory (SNDP) which can measure dipole moment induced surface potential with atomic resolution. Using this method, we simultaneously measured topography and surface potential of mono layer graphene formed on the 4H-SiC(0001) substrate. Finally, memory density of 3.4Tbit/inch2 were achieved using the hard-disk-drive (HDD)-type ferroelectric data storage system.

  7. Nanoscale measurements of ferroelectric thin films using scanning nonlinear dielectric microscopy for next-generation ultrahigh-density data storage devices

    HIRANAGA Yoshiomi

    Offer Organization: Japan Society for the Promotion of Science

    System: Grants-in-Aid for Scientific Research

    Category: Grant-in-Aid for Young Scientists (B)

    Institution: Tohoku University

    2009 - 2011

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    Several experiments of nanoscale domain switching on ferroelectric thin films were conducted in order to develop ferroelectric thin films for high-density data storage. Major achievements of this study are as follows :(1)Artificial small nanodomain dots with the diameter of approximately 20 nm were successfully formed on an epitaxial LiTaO_3 thin film prepared by MOCVD method. A domain dot array with the density of 1. 6 Tbit/inch^2 was also formed on the same thin film.(2)Intermittent contact scanning nonlinear dielectric microscopy (IC-SNDM)was developed for study on nanoscale domain switching on ferroelectric thin films. The reproducibility of measurements was improved in comparison to a conventional SNDM operated under contact mode.(3)Single track read/write operations were demonstrated using our HDD-type ferroelectric data storage testing system.

  8. Next Generation Super High Density Ferroelectric Data Storage Using Scanning Nonlinear Dielectric Microscopy Technique

    CHO Yasuo, HIROSE Ryusuke, HIRANAGA Yoshiomi, KIN Nobuhiro, YAMASUE Kohei

    Offer Organization: Japan Society for the Promotion of Science

    System: Grants-in-Aid for Scientific Research

    Category: Grant-in-Aid for Specially Promoted Research

    Institution: Tohoku University

    2006 - 2010

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    We had made a study on next generation high density ferroelectric data storage based on scanning nonlinear dielectric microscopy. We have succeeded in forming world smallest ferroelectric single nano-domain dot with the size of 2.8nm in diameter. Also, we had achieved the memory density of 4Tbit/inch^2 in actual information recording which requires an abundance of bits to be packed together.

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