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Magnetization dynamics in microstructed NdFeB single dot

Research Project

Project/Area Number 24360261
Research Category

Grant-in-Aid for Scientific Research (B)

Allocation TypePartial Multi-year Fund
Section一般
Research Field Physical properties of metals
Research InstitutionTohoku University

Principal Investigator

KITAKAMI Osamu  東北大学, 多元物質科学研究所, 教授 (70250834)

Co-Investigator(Kenkyū-buntansha) OKAMOTO Satoshi  東北大学, 多元物質科学研究所, 准教授 (10292278)
KIKUCHI Nobuaki  東北大学, 多元物質科学研究所, 助教 (80436170)
SHIMATSU Takehito  東北大学, 学際科学国際高等研究センター, 教授 (50206182)
YANAGIHARA Mihiro  東北大学, 多元物質科学研究所, 教授 (40174552)
Project Period (FY) 2012-04-01 – 2015-03-31
Project Status Completed (Fiscal Year 2014)
Budget Amount *help
¥16,120,000 (Direct Cost: ¥12,400,000、Indirect Cost: ¥3,720,000)
Fiscal Year 2014: ¥3,900,000 (Direct Cost: ¥3,000,000、Indirect Cost: ¥900,000)
Fiscal Year 2013: ¥3,770,000 (Direct Cost: ¥2,900,000、Indirect Cost: ¥870,000)
Fiscal Year 2012: ¥8,450,000 (Direct Cost: ¥6,500,000、Indirect Cost: ¥1,950,000)
Keywords永久磁石 / NdFeB / 保磁力 / 微細加工 / パルス磁場 / 反転ダイナミクス / ナノサイズ / 反転磁区 / ナノコンポジット / 単一粒子 / 磁化反転 / 磁化挙動
Outline of Final Research Achievements

The aim of this study is to elucidate the magnetization dynamics of single NdFeB dot. By combining our highly sensitive Hall effect magnetometry with the newly developed large amplitude ns pulse field generator, we have traced magnetization reversal process in single dot after application of slowly varying dc fields and ns pulse fields. Nucleation of reversed domains of about 100 nm in diameter takes place at same points for both cases, but the significant difference is observed in their following expansion. In the dc field case, neighboring nucleated domains are linked to each other, resulting in a maze-like domain structure, while nucleated domains tend to expand isotropically in the pulse field case. Such difference depending on application fields can be explained by assuming multiple energy barriers for magnetization reversal. This result leads us to believe that elimination of defects or something which lower the energy barrier contributes to the enhancement of coercivity.

Report

(4 results)
  • 2014 Annual Research Report   Final Research Report ( PDF )
  • 2013 Annual Research Report
  • 2012 Annual Research Report
  • Research Products

    (75 results)

All 2014 2013 2012 Other

All Journal Article (24 results) (of which Peer Reviewed: 19 results,  Open Access: 5 results,  Acknowledgement Compliant: 2 results) Presentation (50 results) (of which Invited: 2 results) Remarks (1 results)

  • [Journal Article] Quasi-ballistic magnetization switching in Co/Pt dots with perpendicular magnetization2014

    • Author(s)
      N. Kikuchi, Y. Suyama, S. Okamoto, O. Kitakami, and T. Shimatsu
    • Journal Title

      Applied Physics Letters 104, 112409 (2014)

      Volume: 104 Issue: 11

    • DOI

      10.1063/1.4869150

    • Related Report
      2014 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Theory and experiment of microwave-Assisted magnetization switching in perpendicular magnetic nanodots2014

    • Author(s)
      S. Okamoto, M. Furuta, N. Kikuchi, O. Kitakami, and T. Shimatsu
    • Journal Title

      IEEE Trans. Magn

      Volume: 50巻 Issue: 3 Pages: 83-88

    • DOI

      10.1109/tmag.2013.2281400

    • Related Report
      2014 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Size dependence of magnetization switching and its dispersion of Co/Pt nanodots2014

    • Author(s)
      M. Furuta, S. Okamoto, N. Kikuchi, O. Kitakami, and T. Shimatsu
    • Journal Title

      J. Appl. Phys

      Volume: 115巻 Issue: 13

    • DOI

      10.1063/1.4870451

    • Related Report
      2014 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Granular nanostructures and magnetic characteristics of FePt-TiO2/FePt-C stacked granular films2014

    • Author(s)
      T.Ono, T.Moriya, M.Hatayama, N.Kikuchi, S.Okamoto, O.Kitakami, T.Shimatsu
    • Journal Title

      Journal of Applied Physics

      Volume: 115 Issue: 17

    • DOI

      10.1063/1.4861684

    • Related Report
      2014 Annual Research Report
    • Peer Reviewed / Open Access / Acknowledgement Compliant
  • [Journal Article] Magnetic anisotropy and order structure of L10-FePt(001) single-crystal films2014

    • Author(s)
      A. Hotta, T. Ono, M. Hatayama, K. Tsumura, N. Kikuchi, S. Okamoto, O. Kitakami, T. Shimatsu
    • Journal Title

      Journal of Applied Physics

      Volume: 115 Issue: 17

    • DOI

      10.1063/1.4862840

    • Related Report
      2014 Annual Research Report
    • Peer Reviewed / Open Access / Acknowledgement Compliant
  • [Journal Article] Microwave assistance effect on magnetization switching in Co-Cr-Pt granular film2014

    • Author(s)
      S. Okamoto, N. Kikuchi, A. Hotta, M. Furuta, O. Kitakami, and T. Shimatsu
    • Journal Title

      Appl. Phy. Lett

      Volume: 103巻 Issue: 20

    • DOI

      10.1063/1.4830364

    • Related Report
      2013 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Stoner-Wohlfarth Like Magnetization Switching in Very Small Co/Pt Nanodots under the Assistance of Radio Frequency Magnetic Field2013

    • Author(s)
      M. Furuta, S. Okamoto, N. Kikuchi, O. Kitakami, and T. Shimatsu
    • Journal Title

      Appl. Phys. Express

      Volume: 6巻 Issue: 5 Pages: 053006-053006

    • DOI

      10.7567/apex.6.053006

    • NAID

      10031174331

    • Related Report
      2013 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Pulse Rise Time Dependence of Switching Field of Co/Pt Multilayer Dot2013

    • Author(s)
      N. Kikuchi, Y. Suyama, S. Okamoto, O. Kitakami
    • Journal Title

      ELECTRONICS AND COMMUNICATIONS

      Volume: 96 Issue: 12 Pages: 9-14

    • DOI

      10.1002/ecj.11569

    • NAID

      10031120040

    • Related Report
      2013 Annual Research Report
    • Peer Reviewed
  • [Journal Article] High permeability and electromagnetic noise suppression characteristics of Fe-B-P sub-micron particle chains and their composites with NiZn-ferrite nanoparticles2013

    • Author(s)
      C. Yao, Y. Shimada, S. Muroga, G. W. Qin, S. Okamoto, O. Kitakami, Y. Endo, M. Yamaguchi
    • Journal Title

      JOURNAL OF ALLOYS AND COMPOUNDS

      Volume: 554 Pages: 414-418

    • DOI

      10.1016/j.jallcom.2012.11.157

    • Related Report
      2013 Annual Research Report 2012 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Crystal structures and magnetic properties of epitaxial Co–W perpendicular films2013

    • Author(s)
      J.-J. Wang , Y. Tan , C.-M. Liu , O.Kitakami
    • Journal Title

      Journal of Magnetism and Magnetic Materials

      Volume: 334 Pages: 119-123

    • DOI

      10.1016/j.jmmm.2013.01.019

    • Related Report
      2013 Annual Research Report
    • Peer Reviewed
  • [Journal Article] 磁性微粒子の相安定性,磁化挙動,そして磁気記録への応用2013

    • Author(s)
      北上修
    • Journal Title

      日本磁気学会誌 まぐね

      Volume: 8 Pages: 71-79

    • NAID

      10031163450

    • Related Report
      2013 Annual Research Report
    • Peer Reviewed
  • [Journal Article] 垂直磁化磁性体におけるマイクロ波アシスト磁化反転2013

    • Author(s)
      岡本 聡
    • Journal Title

      電子情報通信学会 技術研究報告

      Volume: CPM2013

    • Related Report
      2013 Annual Research Report
  • [Journal Article] Co/Ptナノドットアレイを用いたマイクロ波アシスト磁化反転とその反転挙動2013

    • Author(s)
      古田正樹, 岡本 聡, 菊池伸明, 北上 修, 島津武仁
    • Journal Title

      電子情報通信学会 技術研究報告

      Volume: MR2013

    • Related Report
      2013 Annual Research Report
  • [Journal Article] マイクロ波アシスト磁化反転における解析的考察と実験検証2013

    • Author(s)
      岡本 聡, 菊池伸明, 古田正樹, 北上 修, 島津武仁
    • Journal Title

      電子情報通信学会 技術研究報告

      Volume: MR2013

    • Related Report
      2013 Annual Research Report
  • [Journal Article] Co/Ptナノドットアレイを用いたマイクロ波アシスト磁化反転実験とその反転挙動解析2013

    • Author(s)
      古田正樹, 岡本 聡, 菊池伸明, 北上 修, 島津武仁
    • Journal Title

      電気学会 マグネティクス研究会資料

      Volume: MAG-13

    • NAID

      10031193570

    • Related Report
      2013 Annual Research Report
  • [Journal Article] Co/Ptナノドットにおけるマイクロ波アシスト効果のサイズ依存性2013

    • Author(s)
      古田正樹, 岡本 聡, 菊池伸明, 北上 修, 島津武仁
    • Journal Title

      電気学会 マグネティクス研究会資料

      Volume: MAG-13

    • Related Report
      2013 Annual Research Report
  • [Journal Article] Switching time of a single spin in linearly varying field2012

    • Author(s)
      Y. Uesaka, 他
    • Journal Title

      Journal of Applied Physics

      Volume: 111 Issue: 7

    • DOI

      10.1063/1.3676061

    • Related Report
      2012 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Correlation between Switching Field and Microstructure of Individual Co/Pt Dots2012

    • Author(s)
      N. Kikuchi, Y. Murakami, 他4名
    • Journal Title

      Jpn. J. Appl. Phys

      Volume: 51 Issue: 10R Pages: 103002-103002

    • DOI

      10.1143/jjap.51.103002

    • NAID

      40019455772

    • Related Report
      2012 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Fabrication of (Co-Fe)-B particles with magnetic softness2012

    • Author(s)
      Y. Shimada, 他
    • Journal Title

      IEEE Transactions on Magnetics

      Volume: 48 Issue: 11 Pages: 2903-2906

    • DOI

      10.1109/tmag.2012.2196262

    • Related Report
      2012 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Perpendicular anisotropy and Gilbert damping in sputtered Co/Pd multilayers2012

    • Author(s)
      T. Kato
    • Journal Title

      IEEE Trans. Magn.

      Volume: 48 Issue: 11 Pages: 3288-3291

    • DOI

      10.1109/tmag.2012.2198446

    • Related Report
      2012 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Significant Reduction of Switching Field and its Distribution in Co/Pt Nanodots with Assistance of Radio Frequency Field2012

    • Author(s)
      S. Okamoto, 他
    • Journal Title

      Applied Physics Express

      Volume: 5 Issue: 9 Pages: 093005-093005

    • DOI

      10.1143/apex.5.093005

    • NAID

      40019425257

    • Related Report
      2012 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Frequency and Time Dependent Microwave Assisted Switching Behaviors of Co/Pt Nanodots2012

    • Author(s)
      S. Okamoto, N. Kikuchi, J. Li, O. Kitakami, T. Shimatsu, and H. Aoi
    • Journal Title

      Appl. Phys. Express

      Volume: 5巻 Issue: 4 Pages: 043001-043001

    • DOI

      10.1143/apex.5.043001

    • NAID

      10030592890

    • Related Report
      2012 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Switching Beh aviors and its Dynamics of a Co/Pt Nanodot Under the Assistance of rf Fields2012

    • Author(s)
      S. Okamoto, N. Kikuchi, M. Furuta, O. Kitakami, and T. Shimatsu
    • Journal Title

      Phy. Rev. Lett

      Volume: 109巻 Issue: 23

    • DOI

      10.1103/physrevlett.109.237209

    • Related Report
      2012 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Pulse Rise Time Dependence of Switching Field of Co/Pt Multilayer Dot2012

    • Author(s)
      菊池伸明, 他
    • Journal Title

      IEEJ Transactions on Fundamentals and Materials

      Volume: 132 Issue: 10 Pages: 838-843

    • DOI

      10.1541/ieejfms.132.838

    • NAID

      10031120040

    • ISSN
      0385-4205, 1347-5533
    • Related Report
      2012 Annual Research Report
    • Peer Reviewed
  • [Presentation] Nd2Fe14B薄膜の作製ならびに微視的・動的磁化過程評価のための微細加工の検討2014

    • Author(s)
      東 佑, 門ノ沢 和也, 岡本 聡, 後藤 龍太, 菊池 伸明, 北上 修
    • Organizer
      電気学会 マグネティクス研究会
    • Place of Presentation
      東京
    • Year and Date
      2014-12-12
    • Related Report
      2014 Annual Research Report
  • [Presentation] Energy barrier analyses on highly oriented Nd-Fe-B thin films with and without Nd overlayer2014

    • Author(s)
      R. Goto, S. Okamoto, N. Kikuchi, O. Kitakami
    • Organizer
      The 59th Annual Magnetism and Magnetic Materials Conference
    • Place of Presentation
      USA,Honolulu
    • Year and Date
      2014-11-03 – 2014-11-07
    • Related Report
      2014 Annual Research Report
  • [Presentation] Magnetic characteristics and grain structures of FePt-(B, C)/FePt-C stacked granular films2014

    • Author(s)
      A. Furuta, H. Kikuchi, H. Kataoka, T. Ono, N. Kikuchi, S. Okamoto, O. Kitakami, T. Shimatsu
    • Organizer
      The 59th Annual Magnetism and Magnetic Materials Conference
    • Place of Presentation
      USA,Honolulu
    • Year and Date
      2014-11-03 – 2014-11-07
    • Related Report
      2014 Annual Research Report
  • [Presentation] Ferromagnetic resonance on nanosized Co/Pt multilayer dots2014

    • Author(s)
      N. Kikuchi, M. Furuta, S. Okamoto, O. Kitakami, T. Shimatsu
    • Organizer
      The 59th Annual Magnetism and Magnetic Materials Conference
    • Place of Presentation
      USA,Honolulu
    • Year and Date
      2014-11-03 – 2014-11-07
    • Related Report
      2014 Annual Research Report
  • [Presentation] Co/Ptナノドットの強磁性共鳴測定2014

    • Author(s)
      菊池伸明, 古田正樹, 岡本 聡, 北上 修, 島津武仁
    • Organizer
      日本磁気学会
    • Place of Presentation
      東京
    • Year and Date
      2014-09-02 – 2014-09-05
    • Related Report
      2014 Annual Research Report
  • [Presentation] L10-FePt多結晶垂直磁化膜のPt表面偏析と規則度のPt組成依存性2014

    • Author(s)
      堀田明良, 小野拓也, 島津武仁, 菊池伸明, 岡本 聡, 北上 修
    • Organizer
      日本磁気学会
    • Place of Presentation
      東京
    • Year and Date
      2014-09-02 – 2014-09-05
    • Related Report
      2014 Annual Research Report
  • [Presentation] Nd-Fe-Bドットのナノ秒パルス磁場による磁化反転2014

    • Author(s)
      門ノ沢和也, 東 佑, 菊池伸明, 後藤龍太, 岡本 聡, 北上 修
    • Organizer
      日本磁気学会
    • Place of Presentation
      東京
    • Year and Date
      2014-09-02 – 2014-09-05
    • Related Report
      2014 Annual Research Report
  • [Presentation] Nd-Fe-B薄膜およびNd-Fe-B/Nd薄膜の磁気粘性測定2014

    • Author(s)
      後藤龍太, 岡本 聡, 菊池伸明, 北上 修
    • Organizer
      日本磁気学会
    • Place of Presentation
      東京
    • Year and Date
      2014-09-02 – 2014-09-05
    • Related Report
      2014 Annual Research Report
  • [Presentation] Co/Pt多層膜とCoPt/Ru膜のVNA-FMR2014

    • Author(s)
      草薙 勇作, 岡本 聡, 菊池 伸明, 北上 修, 加藤 剛志, 岩田 聡
    • Organizer
      電気学会 マグネティクス研究会
    • Place of Presentation
      北九州
    • Year and Date
      2014-08-04 – 2014-08-05
    • Related Report
      2014 Annual Research Report
  • [Presentation] Ferromagnetic resonance measurements on single nanoscale Co/Pt dots with perpendicular anisotropy2014

    • Author(s)
      N. Kikuchi, S. Okamoto, M. Furuta, O. Kitakami, T. Shimatsu
    • Organizer
      IEEE International Magnetics Conference
    • Place of Presentation
      Germany,Dresden
    • Year and Date
      2014-05-04 – 2014-05-08
    • Related Report
      2014 Annual Research Report
  • [Presentation] マイクロ波アシスト磁化反転における解析 的考察と実験検証2013

    • Author(s)
      古田正樹, 岡本聡, 菊池伸明, 北上修, 島津武仁
    • Organizer
      電子情報通信学会 磁気記録・情報ストレージ研究会
    • Place of Presentation
      仙台
    • Related Report
      2013 Annual Research Report
  • [Presentation] マイクロ波アシスト磁化反転における解析的考察と実験検証2013

    • Author(s)
      岡本聡, 古田正樹, 菊池伸明, 北上修, 島津武仁
    • Organizer
      電子情報通信学会 磁気記録・情報ストレージ研究会
    • Place of Presentation
      仙台
    • Related Report
      2013 Annual Research Report
  • [Presentation] Co/Pt ナノドットのマイクロ波アシストにおける 反転磁場分散と臨界周波数分散2013

    • Author(s)
      古田正樹, 岡本聡, 菊池伸明, 北上修, 島津武仁
    • Organizer
      日本磁気学会
    • Place of Presentation
      札幌
    • Related Report
      2013 Annual Research Report
  • [Presentation] Co/Pt 多層膜のダンピング定数のCo 層厚依存性2013

    • Author(s)
      草薙勇作, 岡本聡, 菊池伸明, 北上修, 加藤剛志, 岩田聡
    • Organizer
      日本磁気学会
    • Place of Presentation
      札幌
    • Related Report
      2013 Annual Research Report
  • [Presentation] Co/Pt 多層膜の垂直磁気異方性とダンピング定数2013

    • Author(s)
      足立寛太, 加藤剛志, 岡本聡 , 菊池伸明 , 北上修 , 岩田聡
    • Organizer
      日本磁気学会
    • Place of Presentation
      札幌
    • Related Report
      2013 Annual Research Report
  • [Presentation] L10-FePt 垂直磁化膜の一軸磁気異方性の膜厚依存性2013

    • Author(s)
      堀田明良, 小野拓也, 島津武仁, 菊池伸明, 岡本聡, 北上修
    • Organizer
      日本磁気学会
    • Place of Presentation
      札幌
    • Related Report
      2013 Annual Research Report
  • [Presentation] マイクロ波アシスト磁化反転におけるCo/Pt ドット径依存性2013

    • Author(s)
      古田正樹, 岡本聡, 菊池伸明, 北上修, 島津武仁
    • Organizer
      日本磁気学会
    • Place of Presentation
      札幌
    • Related Report
      2013 Annual Research Report
  • [Presentation] 永久磁石の磁化反転実験のためのナノ秒パルス磁場発生装置2013

    • Author(s)
      門ノ沢和也, 菊池伸明, 後藤龍太, 岡本 聡, 北上 修
    • Organizer
      日本磁気学会
    • Place of Presentation
      札幌
    • Related Report
      2013 Annual Research Report
  • [Presentation] 高配向Nd-Fe-B スパッタ薄膜の作製と磁化反転挙動2013

    • Author(s)
      後藤龍太, 門ノ沢和也, 岡本聡, 菊池伸明, 北上修
    • Organizer
      日本磁気学会
    • Place of Presentation
      札幌
    • Related Report
      2013 Annual Research Report
  • [Presentation] FREQUENCY AND SIZE DEPENDENT MICROWAVE ASSISTED MAGNETIZATION SWITCHING IN CO/PT NANODOT2013

    • Author(s)
      S. Okamoto, M. Furuta, N. Kikuchi, O. Kitakami, T. Shimatsu
    • Organizer
      24th MAGNETIC RECORDING CONFERENCE
    • Place of Presentation
      東京
    • Related Report
      2013 Annual Research Report
    • Invited
  • [Presentation] RISE TIME EFFECT ON MAGNETIZATION REVERSAL OF CO/PT MULRILAYER NANODOTS BY NANOSECONDS PULSE FIELDS2013

    • Author(s)
      N. Kikuchi, S. Okamoto, M. Furuta, O. Kitakami, T. Shimatsu
    • Organizer
      14th Magnetics and Optics Research International Symposium
    • Place of Presentation
      大宮
    • Related Report
      2013 Annual Research Report
    • Invited
  • [Presentation] Curie temperature and magnetic anisotropy for L10 type Fe-Pt-Cu single crystal films2013

    • Author(s)
      T. Moriya, H. Nakata, K. Komiyama, S. Okamoto, N. Kikuchi, O. Kitakami, T. Shimatsu
    • Organizer
      58th Annual Conference on Magnetism and Magnetic Materials
    • Place of Presentation
      アメリカ・デンバー
    • Related Report
      2013 Annual Research Report
  • [Presentation] Grain segregation and uniaxial magnetic anisotropy for L10 type FePt-X (X=SiC, TiC) films on FePt-C template2013

    • Author(s)
      H. Kataoka, H. Kikuchi, A. Furuta, K. Tsumura, N. Kikuchi, S. Okamoto, O. Kitakami, T. Shimatsu
    • Organizer
      58th Annual Conference on Magnetism and Magnetic Materials
    • Place of Presentation
      アメリカ・デンバー
    • Related Report
      2013 Annual Research Report
  • [Presentation] Granular nanostructure and magnetic characteristics of FePt-MOx/FePt-C (M = Ti, Si) stacked granular films2013

    • Author(s)
      T. Ono, T. Moriya, M. Hatayama, N. Kikuchi, S. Okamoto, O. Kitakami, T. Shimatsu
    • Organizer
      58th Annual Conference on Magnetism and Magnetic Materials
    • Place of Presentation
      アメリカ・デンバー
    • Related Report
      2013 Annual Research Report
  • [Presentation] Growth of highly oriented Nd-Fe-B films and its magnetization reversal behaviors2013

    • Author(s)
      R. Goto, K. Kadonosawa, S. Okamoto, N. Kikuchi, O. Kitakami
    • Organizer
      58th Annual Conference on Magnetism and Magnetic Materials
    • Place of Presentation
      アメリカ・デンバー
    • Related Report
      2013 Annual Research Report
  • [Presentation] Magnetic anisotropy and order structure of (001) textured L10-FePt polycrystalline films deposited on MgO seed layers2013

    • Author(s)
      A. Hotta, T. Ono, M. Hatayama, K. Tsumura, N. Kikuchi, S. Okamoto, O. Kitakami, T. Shimatsu
    • Organizer
      58th Annual Conference on Magnetism and Magnetic Materials
    • Place of Presentation
      アメリカ・デンバー
    • Related Report
      2013 Annual Research Report
  • [Presentation] Switching field and critical frequency distributions on microwave assisted switching in Co/Pt nanodot array2013

    • Author(s)
      M. Furuta, S. Okamoto, N. Kikuchi, O. Kitakami, T. Shimatsu
    • Organizer
      58th Annual Conference on Magnetism and Magnetic Materials
    • Place of Presentation
      アメリカ・デンバー
    • Related Report
      2013 Annual Research Report
  • [Presentation] Switching field reduction of Co-Cr-Pt granular film under the assistance of rf fields2013

    • Author(s)
      S. Okamoto, N. Kikuchi, A. Hotta, M. Furuta, O. Kitakami, T. Shimatsu
    • Organizer
      58th Annual Conference on Magnetism and Magnetic Materials
    • Place of Presentation
      アメリカ・デンバー
    • Related Report
      2013 Annual Research Report
  • [Presentation] Time dependent coercivity of granular media in a time scale from nanosecond to sub-millisecond regime2013

    • Author(s)
      N. Kikuchi, A. Hotta, K. Kadonosawa, M. Furuta, S. Okamoto, O. Kitakami, T. Shimatsu
    • Organizer
      58th Annual Conference on Magnetism and Magnetic Materials
    • Place of Presentation
      アメリカ・デンバー
    • Related Report
      2013 Annual Research Report
  • [Presentation] ESTIMATION OF PERPENDICULAR ANISOTROPY AND GILBERT DAMPING CONSTANT OF Co/Pt MULTILAYERS USING TRMOKE2013

    • Author(s)
      K. Adachi, T. Kato, S. Okamoto, N. Kikuchi, O. Kitakami, S. Iwata
    • Organizer
      58th Annual Conference on Magnetism and Magnetic Materials
    • Place of Presentation
      アメリカ・デンバー
    • Related Report
      2013 Annual Research Report
  • [Presentation] ナノスケール孤立磁石微粒子の微視的・動的磁化挙動の評価・解析2012

    • Author(s)
      岡本聡, 他
    • Organizer
      元素戦略・磁性材料拠点第2回成果報告会
    • Place of Presentation
      東京
    • Year and Date
      2012-12-15
    • Related Report
      2012 Annual Research Report
  • [Presentation] Switching behavior of perpendicular magnetic dots under the assistance of rf field2012

    • Author(s)
      S. Okamoto, 他
    • Organizer
      180th Special MMU Seminar
    • Place of Presentation
      Tsukuba(招待講演)
    • Year and Date
      2012-12-14
    • Related Report
      2012 Annual Research Report
  • [Presentation] マイクロ波アシストにおけるCo/Ptナノドットの磁化反転挙動2012

    • Author(s)
      岡本聡, 他
    • Organizer
      日本磁気学会第186回研究会
    • Place of Presentation
      東京(招待講演)
    • Year and Date
      2012-11-02
    • Related Report
      2012 Annual Research Report
  • [Presentation] Co/Pd多層膜の垂直磁気異方性とGilbertダンピング定数2012

    • Author(s)
      加島新之助, 他
    • Organizer
      電気学会A部門大会
    • Place of Presentation
      秋田
    • Year and Date
      2012-09-20
    • Related Report
      2012 Annual Research Report
  • [Presentation] 垂直磁化微小ドットの磁化反転過程2012

    • Author(s)
      菊池伸明, 他
    • Organizer
      日本磁気学会スピンエレクトロニクス研究会
    • Place of Presentation
      東京(招待講演)
    • Year and Date
      2012-08-22
    • Related Report
      2012 Annual Research Report
  • [Presentation] メモリーの超高密度化を目指す磁性材料そして記録方式2012

    • Author(s)
      北上修, 他
    • Organizer
      九州シンクロトロン光研究センター研究成果報告会
    • Place of Presentation
      仙台(招待講演)
    • Year and Date
      2012-07-30
    • Related Report
      2012 Annual Research Report
  • [Presentation] ナノスケール孤立磁石微粒子の微視的・動的磁化挙動の評価・解析2012

    • Author(s)
      岡本聡, 他
    • Organizer
      元素戦略・磁性材料拠点第1回成果報告会
    • Place of Presentation
      東京
    • Year and Date
      2012-07-29
    • Related Report
      2012 Annual Research Report
  • [Presentation] マイクロ波アシスト磁化反転の反転メカニズムとそのダイナミクス2012

    • Author(s)
      岡本聡, 他
    • Organizer
      電気学会, 日本磁気学会合同研究会
    • Place of Presentation
      東京
    • Year and Date
      2012-07-19
    • Related Report
      2012 Annual Research Report
  • [Presentation] 垂直磁化微小ドットの磁気特性2012

    • Author(s)
      菊池伸明, 他
    • Organizer
      電気学会マグネティックス研究会
    • Place of Presentation
      東京(招待講演)
    • Year and Date
      2012-07-17
    • Related Report
      2012 Annual Research Report
  • [Presentation] Co/Ptナノドットを用いたマイクロ波アシスト磁化反転2012

    • Author(s)
      岡本聡, 他
    • Organizer
      電子情報通信学会磁気記録研究会
    • Place of Presentation
      仙台
    • Year and Date
      2012-06-14
    • Related Report
      2012 Annual Research Report
  • [Presentation] Fabrication of epitaxial Nd-Fe-B thin films and its magnetic properties2012

    • Author(s)
      R. Goto, 他
    • Organizer
      International Conference of the Asian Union of Magnetics Societies(ICAUMS2012)
    • Place of Presentation
      Nara
    • Related Report
      2012 Annual Research Report
  • [Presentation] 垂直磁気異方性を有するナノ磁性ドットを用いたマイクロ波アシスト磁化反転2012

    • Author(s)
      岡本聡, 他
    • Organizer
      電気学会マグネティックス研究会
    • Place of Presentation
      函館(招待講演)
    • Related Report
      2012 Annual Research Report
  • [Presentation] Microwave assisted magnetization switching on perpendicular magneticdots2012

    • Author(s)
      S. Okamoto, 他
    • Organizer
      Collaborative Conference on Materials Research (CCMR) 2012
    • Place of Presentation
      Seoul, Korea(招待講演)
    • Related Report
      2012 Annual Research Report
  • [Presentation] Microwave assisted magnetization switching in Co/Pt nanodot2012

    • Author(s)
      S. Okamoto, 他
    • Organizer
      The Magnetic Recording Conference (TMRC2012)
    • Place of Presentation
      San Jose, USA(招待講演)
    • Related Report
      2012 Annual Research Report
  • [Presentation] Structural Dependent Gilbert Damping in Sputtered Co/Pd Multilayers2012

    • Author(s)
      T. Kato, 他
    • Organizer
      International Magnetics Conference (INTERMAG2012)
    • Place of Presentation
      Vancouver, Canada
    • Related Report
      2012 Annual Research Report
  • [Presentation] Effect of annealing for magnetic soness of Fe-B submicron particles2012

    • Author(s)
      Y. Shimada, 他
    • Organizer
      International Conference of the Asian Union of Magnetics Societies(ICAUMS2012)
    • Place of Presentation
      Nara
    • Related Report
      2012 Annual Research Report
  • [Presentation] Gilbert damping of Co/Pd multilayers with perpendicular anisotropy2012

    • Author(s)
      S. Kashima, 他
    • Organizer
      International Conference of the Asian Union of Magnetics Societies(ICAUMS2012)
    • Place of Presentation
      Nara
    • Related Report
      2012 Annual Research Report
  • [Presentation] Magnetization reversal experiments on Co/Pt multilayer dot with a puise field perpendicular to the magnetization2012

    • Author(s)
      N. Kikuchi, 他
    • Organizer
      International Conference of the Asian Union of Magnetics Societies(ICAUMS2012)
    • Place of Presentation
      Nara
    • Related Report
      2012 Annual Research Report
  • [Presentation] Microwave assisted switching experiment on Co/Pt multilayer dot array2012

    • Author(s)
      M. Furuta, 他
    • Organizer
      International Conference of the Asian Union of Magnetics Societie s (ICAUMS 2012)
    • Place of Presentation
      Nara
    • Related Report
      2012 Annual Research Report
  • [Presentation] Switching behavior of single Co/Pt nanodot under microwave assistance2012

    • Author(s)
      S. Okamoto, 他
    • Organizer
      International Conference of the Asian Union of Magnetics Societies(ICAUMS2012)
    • Place of Presentation
      Nara
    • Related Report
      2012 Annual Research Report
  • [Remarks] 東北大学 多元物質科学研究所 業績データベース

    • URL

      http://db.tagen.tohoku.ac.jp/php/db/view.php

    • Related Report
      2013 Annual Research Report

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Published: 2012-04-24   Modified: 2019-07-29  

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