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Control of Spin Current in Artificially Twisted Spin Structures

Research Project

Project/Area Number 23760659
Research Category

Grant-in-Aid for Young Scientists (B)

Allocation TypeMulti-year Fund
Research Field Structural/Functional materials
Research InstitutionTohoku University

Principal Investigator

SEKI Takeshi  東北大学, 金属材料研究所, 助教 (40579611)

Project Period (FY) 2011 – 2012
Project Status Completed (Fiscal Year 2012)
Budget Amount *help
¥4,550,000 (Direct Cost: ¥3,500,000、Indirect Cost: ¥1,050,000)
Fiscal Year 2012: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
Fiscal Year 2011: ¥2,860,000 (Direct Cost: ¥2,200,000、Indirect Cost: ¥660,000)
Keywords金属人工格子 / 磁気構造 / スピン流 / スピンエレクトロニクス / 構造・機能材料 / 超格子
Research Abstract

The understanding of interaction between “spin current" and “magnetization" is an essential issue for the development of spintronic devices. In this research project, bilayers consisting of hard magnetic L10-FePt and soft magnetic Permalloy (FeNi alloy) were prepared, and twisted spin structures were artificially formed in the bilayers. The magnetization dynamics of the bilayers were investigated, and the high efficient magnetization switching technique was developed using the spin wave mode in the bilayers. Also, the current-induced magnetization switching was successfully observed in the nanopillars with a twisted spin structure.

Report

(3 results)
  • 2012 Annual Research Report   Final Research Report ( PDF )
  • 2011 Research-status Report
  • Research Products

    (21 results)

All 2013 2012 2011 Other

All Journal Article (3 results) (of which Peer Reviewed: 3 results) Presentation (15 results) (of which Invited: 3 results) Remarks (1 results) Patent(Industrial Property Rights) (2 results)

  • [Journal Article] Spin Wave-Assisted Reduction in Switching Field of Highly Coercive FePt Magnets2013

    • Author(s)
      T. Seki, K. Utsumiya, Y. Nozaki, H. Imamura, and K. Takanashi
    • Journal Title

      Nature Commun

      Volume: 4 Issue: 1

    • DOI

      10.1038/ncomms2737

    • Related Report
      2012 Annual Research Report 2012 Final Research Report
    • Peer Reviewed
  • [Journal Article] Magnetic properties of L1_0-FePt / permalloy exchange-spring films2011

    • Author(s)
      K. Utsumiya, T. Seki, and K. Takanashi
    • Journal Title

      J. Appl. Phys

      Volume: 110

    • Related Report
      2012 Final Research Report
    • Peer Reviewed
  • [Journal Article] Magnetic properties of L10-FePt / permalloy exchange-spring films2011

    • Author(s)
      K. Utsumiya, T. Seki, and K. Takanashi
    • Journal Title

      J. Appl. Phys.

      Volume: 110 Issue: 10

    • DOI

      10.1063/1.3662901

    • Related Report
      2011 Research-status Report
    • Peer Reviewed
  • [Presentation] スピン波アシスト磁化反転における磁化ダイナミクス2013

    • Author(s)
      関剛斎、堀田京子、能崎幸雄、今村裕志、高梨弘毅
    • Organizer
      第60回応用物理学会春季学術講演会
    • Place of Presentation
      神奈川工科大学,厚木市
    • Year and Date
      2013-03-30
    • Related Report
      2012 Final Research Report
  • [Presentation] Magnetization switching assisted by spin wave excitation2013

    • Author(s)
      T. Seki
    • Organizer
      International Workshop on Development of Functionalized Molecule-based Magnetic Materials
    • Place of Presentation
      Sendai, Japan
    • Year and Date
      2013-02-21
    • Related Report
      2012 Annual Research Report 2012 Final Research Report
  • [Presentation] スピン波アシスト磁化反転における磁化ダイナミクス2013

    • Author(s)
      関剛斎、堀田京子、能崎幸雄、今村裕志、高梨弘毅
    • Organizer
      第60回応用物理学会春季学術講演会
    • Place of Presentation
      神奈川工科大学, 厚木市
    • Related Report
      2012 Annual Research Report
  • [Presentation] 電界およびスピン波を用いたFePt規則合金薄膜の磁化制御2012

    • Author(s)
      関剛斎、菊池祐介、堀田京子、高梨弘毅
    • Organizer
      応用電子物性分科会・スピントロニクス研究会共催研究会
    • Place of Presentation
      首都大学東京,東京.
    • Year and Date
      2012-11-21
    • Related Report
      2012 Final Research Report
  • [Presentation] Spin wave-assisted magnetization switching2012

    • Author(s)
      T. Seki, K. Utsumiya, Y. Nozaki, H. Imamura, and K. Takanashi
    • Organizer
      International Conference of AUMS 2012
    • Place of Presentation
      Nara, Japan
    • Year and Date
      2012-10-03
    • Related Report
      2012 Annual Research Report 2012 Final Research Report
  • [Presentation] Control of Magnetization Switching in Highly Coercive L1_0-FePt2012

    • Author(s)
      T. Seki, and K. Takanashi
    • Organizer
      21st International Colloquium on Magnetic Films and Surfaces
    • Place of Presentation
      Shanghai, China
    • Year and Date
      2012-09-27
    • Related Report
      2012 Final Research Report
  • [Presentation] L1_0型FePt規則合金における低エネルギー磁化反転2012

    • Author(s)
      関剛斎
    • Organizer
      日本金属学会2012年秋期大会
    • Place of Presentation
      愛媛大学,松山市
    • Year and Date
      2012-09-18
    • Related Report
      2012 Final Research Report
  • [Presentation] Control of Magnetization Reversal in Hard Magnetic L1_0-FePt2012

    • Author(s)
      T. Seki, and K. Takanashi
    • Organizer
      IUMRS- ICYRAM 2012
    • Place of Presentation
      Matrix Building, Singapore
    • Year and Date
      2012-07-05
    • Related Report
      2012 Final Research Report
  • [Presentation] スピン波アシスト磁化反転2012

    • Author(s)
      関剛斎、宇津宮和寿、能崎幸雄、今村裕志、高梨弘毅
    • Organizer
      日本物理学会第67回年次大会
    • Place of Presentation
      関西学院大学
    • Year and Date
      2012-03-26
    • Related Report
      2012 Final Research Report 2011 Research-status Report
  • [Presentation] スピン波アシスト磁化反転2012

    • Author(s)
      関剛斎、宇津宮和寿、能崎幸雄、今村裕志、高梨弘毅
    • Organizer
      第59回応用物理学関係連合講演会
    • Place of Presentation
      早稲田大学
    • Year and Date
      2012-03-18
    • Related Report
      2012 Final Research Report 2011 Research-status Report
  • [Presentation] Control of Magnetization Switching in Highly Coercive L10-FePt2012

    • Author(s)
      T. Seki, and K. Takanashi
    • Organizer
      21st International Colloquium on Magnetic Films and Surfaces
    • Place of Presentation
      Shanghai, China
    • Related Report
      2012 Annual Research Report
    • Invited
  • [Presentation] Control of Magnetization Reversal in Hard Magnetic L10-FePt2012

    • Author(s)
      T. Seki, and K. Takanashi
    • Organizer
      IUMRS-ICYRAM 2012
    • Place of Presentation
      Matrix Building, Singapore
    • Related Report
      2012 Annual Research Report
    • Invited
  • [Presentation] 電界およびスピン波を用いたFePt規則合金薄膜の磁化制御2012

    • Author(s)
      関剛斎、菊池祐介、堀田京子、高梨弘毅
    • Organizer
      応用電子物性分科会・スピントロニクス研究会 共催研究会
    • Place of Presentation
      首都大学東京, 東京
    • Related Report
      2012 Annual Research Report
    • Invited
  • [Presentation] L10型FePt規則合金における低エネルギー磁化反転2012

    • Author(s)
      関剛斎
    • Organizer
      日本金属学会2012年秋期大会
    • Place of Presentation
      愛媛大学, 松山市
    • Related Report
      2012 Annual Research Report
  • [Presentation] 人工制御ねじれ磁気構造の強磁性共鳴測定2011

    • Author(s)
      関剛斎、宇津宮和寿、高梨弘毅
    • Organizer
      第35回日本磁気学会学術講演会
    • Place of Presentation
      新潟・朱鷺メッセ
    • Year and Date
      2011-09-29
    • Related Report
      2012 Final Research Report 2011 Research-status Report
  • [Remarks]

    • URL

      http://magmatelab.imr.tohoku.ac.jp

    • Related Report
      2012 Final Research Report
  • [Patent(Industrial Property Rights)] マイクロ波アシスト磁気記録媒体2011

    • Inventor(s)
      関剛斎 、高梨弘毅
    • Industrial Property Rights Holder
      関剛斎 、高梨弘毅
    • Industrial Property Number
      2011-246937
    • Filing Date
      2011-11-10
    • Related Report
      2012 Final Research Report
  • [Patent(Industrial Property Rights)] マイクロ波アシスト磁気記録媒体2011

    • Inventor(s)
      関剛斎、高梨弘毅
    • Industrial Property Rights Holder
      関剛斎、高梨弘毅
    • Industrial Property Number
      2011-246937
    • Filing Date
      2011
    • Related Report
      2011 Research-status Report

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Published: 2011-08-05   Modified: 2019-07-29  

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