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organic spin seebeck

Research Project

Project/Area Number 17K06303
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Research Field Power engineering/Power conversion/Electric machinery
Research InstitutionKyushu University

Principal Investigator

yamada kazumasa  九州大学, 理学研究院, 助教 (30380562)

Project Period (FY) 2017-04-01 – 2023-03-31
Project Status Completed (Fiscal Year 2022)
Budget Amount *help
¥4,420,000 (Direct Cost: ¥3,400,000、Indirect Cost: ¥1,020,000)
Fiscal Year 2019: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Fiscal Year 2018: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Fiscal Year 2017: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
Keywords廃熱利用 / スピン / 有機 / カーボン / ゼーベック / 熱電変換 / スピンギャップレス / ネルンスト / スピン流 / 排熱利用 / 導電性高分子 / 再生可能エネルギー / 分子性固体 / 超薄膜 / 有機導体
Outline of Final Research Achievements

In this study, we performed thermal spin injection into organic materials and conducted experiments on the generation and detection of spin-polarized currents in organic materials. An organic spin Seebeck device with a crossbar structure was fabricated by using amorphous CoFeAl as a ferromagnetic layer, carbon as an organic conduction layer, and Pt as a spin current conversion layer. Pt has a large inverse spin Hall effect and is suitable as a spin current conversion layer. In the CoFeAl/carbon/Pt crossbar, the thermal spin current injection effect from the CoFeAl layer was observed by the Pt spin current conversion. Temperature dependence measurements were also performed. As future work, contribution and separation of the Nernst effect of the CoFeAl layer are necessary.

Academic Significance and Societal Importance of the Research Achievements

スピンを利用したスピンゼーベック効果が発見された。しかし、熱伝導率の大きな無機材料を使用しているため、無駄に熱を伝えるため、発電効率が良くない。そこで、性能向上のため、有機をスピン伝導層として使用する有機スピンゼーベック素子を作成した。アモルスファスカーボンを使用した有機スピンゼーベック素子の測定により、アモルスファスカーボンのスピン緩和長が短いとことが分かった。有機スピンゼーベック素子の創成により、モバイルコンピューティングおよびユビキタス社会実現のために、温度差を利用した環境発電が期待される。

Report

(7 results)
  • 2022 Annual Research Report   Final Research Report ( PDF )
  • 2021 Research-status Report
  • 2020 Research-status Report
  • 2019 Research-status Report
  • 2018 Research-status Report
  • 2017 Research-status Report
  • Research Products

    (9 results)

All 2022 2019 2018 2017 Other

All Int'l Joint Research (1 results) Journal Article (2 results) (of which Open Access: 1 results,  Peer Reviewed: 1 results) Presentation (5 results) (of which Int'l Joint Research: 1 results) Remarks (1 results)

  • [Int'l Joint Research] ヨーク大学(英国)

    • Related Report
      2019 Research-status Report
  • [Journal Article] スピンギャップレス半導体の成膜とプレーナーホール効果2022

    • Author(s)
      山田和正
    • Journal Title

      低温センターだより

      Volume: 16 Pages: 2-5

    • Related Report
      2021 Research-status Report
    • Open Access
  • [Journal Article] Temperature dependence of mobility of conducting polymer polyaniline with secondary dopant2019

    • Author(s)
      Kazumasa Yamada, Bunju Shinozaki, Takashi Narikiyo, Yousuke Takigawa, Norihiro Kuroda, Toru Bando, Hiroaki Nakamura
    • Journal Title

      Synthetic Metals

      Volume: 247 Pages: 124-130

    • DOI

      10.1016/j.synthmet.2018.11.019

    • Related Report
      2018 Research-status Report
    • Peer Reviewed
  • [Presentation] マルチフェロイク構造と磁気熱電効果を用いた強誘電体基板の熱伝導率の測定2022

    • Author(s)
      小谷悠太,井上建吾,一兜博人,胡少杰,大西紘平,山田和正,木村崇
    • Organizer
      日本物理学会 第128回九州支部例会
    • Related Report
      2022 Annual Research Report
  • [Presentation] Magnetic properties and planar Hall effect of CoFeMnSi films2019

    • Author(s)
      Kazumasa Yamada, Takashi Kimura, Kelvin Elphick, Marjan Samiepour and Atsufumi Hirohata
    • Organizer
      Magnetism and Magnetic Materials Conference 2019
    • Related Report
      2019 Research-status Report
    • Int'l Joint Research
  • [Presentation] 強磁性多層膜ナノ構造における効果的な異常ネルンスト効果の検出2018

    • Author(s)
      山田和正 有木大晟 野村竜也 木村崇
    • Organizer
      磁気記録・情報ストレージ研究会
    • Related Report
      2018 Research-status Report
  • [Presentation] 強磁性ナノ細線における異常ネルンスト効果の効果的検出2018

    • Author(s)
      有木大晟, 山田和正, 野村竜也, 木村崇
    • Organizer
      日本物理学会第73回年次大会
    • Related Report
      2017 Research-status Report
  • [Presentation] Efficient inducement of Anomalous Nernst effects in laterally patterned ferromagnetic films2017

    • Author(s)
      Taisei Ariki, Kazumasa Yamada,Tatsuya Nomura, Takashi Kimura
    • Organizer
      nano spin conversion
    • Related Report
      2017 Research-status Report
  • [Remarks] 年次報告書

    • URL

      https://www.phys.kyushu-u.ac.jp/koho/report.html

    • Related Report
      2021 Research-status Report

URL: 

Published: 2017-04-28   Modified: 2024-01-30  

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