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Magnetic damping control of ferromagnetic thin films with negative spin polarization and development of highly efficient spin-current generator

Research Project

Project/Area Number 24710154
Research Category

Grant-in-Aid for Young Scientists (B)

Allocation TypeMulti-year Fund
Research Field Microdevices/Nanodevices
Research InstitutionFukushima National College of Technology

Principal Investigator

ISOGAMI Shinji  福島工業高等専門学校, その他部局等, 准教授 (10586853)

Research Collaborator TSUNODA Masakiyo  東北大学, 大学院工学研究科, 准教授 (80250702)
OOGANE Mikihiko  東北大学, 大学院工学研究科, 准教授 (50396454)
SAKUMA Akimasa  東北大学, 大学院工学研究科, 教授 (30361124)
Project Period (FY) 2012-04-01 – 2015-03-31
Project Status Completed (Fiscal Year 2014)
Budget Amount *help
¥4,680,000 (Direct Cost: ¥3,600,000、Indirect Cost: ¥1,080,000)
Fiscal Year 2014: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2013: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2012: ¥2,210,000 (Direct Cost: ¥1,700,000、Indirect Cost: ¥510,000)
Keywords窒化鉄 / スピン流 / スピンポンピング / 磁気緩和 / 窒化鉄薄膜 / 結晶構造 / Kerr効果 / スパッタ成膜 / 赤外線加熱プロセス
Outline of Final Research Achievements

Highly efficient spin-current generator was developed using Fe4N thin films with negative spin polarization. The high quality Fe4N/Pt bilayer films were fabricated by the reactive sputtering with Ar and N2 gas mixture during thermal treatment using the focused IR heating system. The electromotive force due to inverse spin-Hall effect generated by spin-pumping from the Fe4N films exhibited one order larger value, compared with the NiFe conventional films. The results implied that our developed Fe4N/Pt systems provided highly spin-current generator.

Report

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

    (13 results)

All 2015 2014 2013 2012

All Journal Article (3 results) (of which Peer Reviewed: 3 results,  Open Access: 1 results,  Acknowledgement Compliant: 1 results) Presentation (9 results) (of which Invited: 1 results) Patent(Industrial Property Rights) (1 results)

  • [Journal Article] Temperature and crystal orientation dependence of magnetic damping in epitaxial Fe4N thin film2014

    • Author(s)
      S. Isogami, M. Tsunoda, M. Oogane, A. Sakuma and M. Takahashi
    • Journal Title

      Journal of Magnetics Society of Japan

      Volume: 38 Pages: 162-168

    • Related Report
      2014 Annual Research Report
    • Peer Reviewed / Open Access / Acknowledgement Compliant
  • [Journal Article] Enhancement of Spin Pumping Efficiency in Fe_4N/Pt Bilayer Films2013

    • Author(s)
      S. Isogami, M. Tsunoda, M. Oogane, A. Sakuma, and M. Takahashi
    • Journal Title

      Applied Physics Express

      Volume: 6 Issue: 6 Pages: 063004-063007

    • DOI

      10.7567/apex.6.063004

    • Related Report
      2013 Research-status Report
    • Peer Reviewed
  • [Journal Article] The Enhancement of Magnetic Damping in Fe_4N Films with Increasing Thickness2013

    • Author(s)
      S. Isogami, M. Tsunoda, M. Oogane, A. Sakuma, and M. Takahashi
    • Journal Title

      Japanese Journal of Applied Physics

      Volume: 52 Issue: 7R Pages: 073001-073003

    • DOI

      10.7567/jjap.52.073001

    • Related Report
      2013 Research-status Report
    • Peer Reviewed
  • [Presentation] 多結晶Co薄膜におけるスピンポンピングへ及ぼす基板加熱中成膜法の効果2015

    • Author(s)
      磯上慎二,日向慎太郎
    • Organizer
      第62回応用物理学会春季学術講演会
    • Place of Presentation
      東海大学
    • Year and Date
      2015-03-11 – 2015-03-14
    • Related Report
      2014 Annual Research Report
  • [Presentation] Tunable spin pumping efficiency depending on crystallographic structures in hcp-Co/Pt films2014

    • Author(s)
      S. Isogami and S. Hinata
    • Organizer
      59th Annual Conference on Magnetism and Magnetic Materials
    • Place of Presentation
      Hawaii (USA)
    • Year and Date
      2014-11-03 – 2014-11-07
    • Related Report
      2014 Annual Research Report
  • [Presentation] Generaton of spin current from ferromagnetic materials with negative spin polarization2014

    • Author(s)
      S. Isogami, M. Tsunoda, M. Oogane, A. Sakuma and M. Takahashi
    • Organizer
      0th International Magnetics Conference, Dresden
    • Place of Presentation
      Dresden (Germany)
    • Year and Date
      2014-05-04 – 2014-05-08
    • Related Report
      2014 Annual Research Report
  • [Presentation] Generation of spin current by spin pumping technique from ferromagnetic materials with negative spin polarization2014

    • Author(s)
      S. Isogami, M. Tsunoda, M. Oogane, A. Sakuma, K. Kabara, and M. Takahashi
    • Organizer
      IEEE International Magnetics Conference
    • Place of Presentation
      Dresden, Germany
    • Related Report
      2013 Research-status Report
  • [Presentation] 擬単結晶Fe4N膜における磁気緩和の温度および結晶方位依存性2013

    • Author(s)
      磯上慎二,角田匡清,大兼幹彦,佐久間昭正,古門聡士,高橋研
    • Organizer
      第37回日本磁気学会学術講演会
    • Place of Presentation
      北海道大学
    • Related Report
      2013 Research-status Report
  • [Presentation] Logic gate using hybrid magntic tunnel junctions with normal and inverse tunneling magnetoresistive effect2013

    • Author(s)
      S. Isogami, T. Owada
    • Organizer
      58th Annual Magnetism & Magnetic Materials Conference
    • Place of Presentation
      Denver, USA
    • Related Report
      2013 Research-status Report
  • [Presentation] 負のスピン分極を示すFe4N薄膜からのスピン流生成とその物性に関する一考察2013

    • Author(s)
      磯上慎二
    • Organizer
      東北大学 電気通信研究所 平成25年度スピニクス研究会
    • Place of Presentation
      東北大学
    • Related Report
      2013 Research-status Report
    • Invited
  • [Presentation] 磁化ダイナミクスによるFe4N薄膜からのスピン流生成2013

    • Author(s)
      磯上慎二,角田匡清,大兼幹彦,佐久間昭正,高橋研
    • Organizer
      東北大学電気通信研究所 共同プロジェクト研究会
    • Place of Presentation
      仙台
    • Related Report
      2012 Research-status Report
  • [Presentation] Generation of spin current from Fe4N film2012

    • Author(s)
      S. Isogami, M. Tsunoda, M. Oogane, A. Sakuma and M. Takahashi
    • Organizer
      International Conference of Asian Union Magnetics Societies
    • Place of Presentation
      Nara, Japan
    • Related Report
      2012 Research-status Report
  • [Patent(Industrial Property Rights)] 論理演算素子2013

    • Inventor(s)
      磯上慎二
    • Industrial Property Rights Holder
      磯上慎二
    • Industrial Property Rights Type
      特許
    • Filing Date
      2013-07-04
    • Related Report
      2013 Research-status Report

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Published: 2013-05-31   Modified: 2019-07-29  

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