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Microscopic elucidation and functionality optimization of TMR device structures containing a barrier layer of monolayer honeycomb structures.

Research Project

Project/Area Number 25870465
Research Category

Grant-in-Aid for Young Scientists (B)

Allocation TypeMulti-year Fund
Research Field Nanostructural physics
Thin film/Surface and interfacial physical properties
Research InstitutionHiroshima University

Principal Investigator

SAWADA Masahiro  広島大学, 放射光科学研究センター, 准教授 (00335697)

Project Period (FY) 2013-04-01 – 2015-03-31
Project Status Completed (Fiscal Year 2014)
Budget Amount *help
¥3,900,000 (Direct Cost: ¥3,000,000、Indirect Cost: ¥900,000)
Fiscal Year 2014: ¥780,000 (Direct Cost: ¥600,000、Indirect Cost: ¥180,000)
Fiscal Year 2013: ¥3,120,000 (Direct Cost: ¥2,400,000、Indirect Cost: ¥720,000)
Keywords超薄膜 / 磁気円二色性 / グラフェン
Outline of Final Research Achievements

In-situ experiments of high-precision films fabrication under ultra high vacuum and magnetic spectroscopy with synchrotron radiation were carried out in order to investigate atomic structures, magnetic and electronic states at the interfaces of layered structures composed of a graphene and a magnetic monolayer, whose layered structure is expected to be a candidate for spintronic materials. At the interface of Graphene/Fe/Ni(111) obtained by intercalation of Fe, ferromagnetic state with in-plane magnetization was observed in the Fe layers thinner than 2 monolayer, where local magnetic moments at Fe atomic site are lager than the case of Fe bulk crystal. Above 3 monolayers of Fe, however, magnetically dead sites were found in the layered structures, which indicate the thickness control of Fe in the thinnest region is crucial for existence of ferromagnetic interface that is a prerequisite of spin-injection to the graphene layer.

Report

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

    (8 results)

All 2015 2014 2013

All Journal Article (1 results) (of which Peer Reviewed: 1 results) Presentation (7 results)

  • [Journal Article] In-situ Studies of Structure and Magnetic Properties of Co Clusters on Au(111)2014

    • Author(s)
      Yusuke Kishimizu
    • Journal Title

      e-Journal of Surface Science and Nanotechnology

      Volume: 12 Issue: 0 Pages: 129-132

    • DOI

      10.1380/ejssnt.2014.129

    • NAID

      130004933810

    • ISSN
      1348-0391
    • Related Report
      2013 Research-status Report
    • Peer Reviewed
  • [Presentation] Graphene/Fe/Ni(111)超薄膜の構造評価2015

    • Author(s)
      多田野渉,松岡祥吾,沢田正博,生天目博文,谷口雅樹
    • Organizer
      日本物理学会
    • Place of Presentation
      早稲田大学 早稲田キャンパス
    • Year and Date
      2015-03-21 – 2015-03-24
    • Related Report
      2014 Annual Research Report
  • [Presentation] Graphene/Fe/Ni(111)超薄膜の構造評価2015

    • Author(s)
      松岡祥吾,多田野渉,沢田正博,生天目博文,谷口雅樹
    • Organizer
      日本放射光学会
    • Place of Presentation
      立命館大学 草津キャンパス
    • Year and Date
      2015-01-10 – 2015-01-12
    • Related Report
      2014 Annual Research Report
  • [Presentation] 軟X線磁気円二色性分光によるGraphene/Fe/Ni(111)の磁性の研究2015

    • Author(s)
      多田野渉,沢田正博,生天目博文,谷口雅樹
    • Organizer
      日本放射光学会
    • Place of Presentation
      立命館大学 草津キャンパス
    • Year and Date
      2015-01-10 – 2015-01-12
    • Related Report
      2014 Annual Research Report
  • [Presentation] Magnetic Properties of Iron Ultrathin Films Intercalated in graphene/Ni(111)2014

    • Author(s)
      W. Tadano, M. Sawada, H. Namatame, M. Taniguchi
    • Organizer
      The 7th International Symposium on Surface Science
    • Place of Presentation
      松江市 くにひきメッセ
    • Year and Date
      2014-11-02 – 2014-11-06
    • Related Report
      2014 Annual Research Report
  • [Presentation] 軟X線吸収磁気円二色性分光によるGraphene/Fe/Ni(111)の磁性の研究2014

    • Author(s)
      多田野渉, 沢田正博, 古田尚史, 岸水悠介, 生天目博文, 谷口雅樹
    • Organizer
      日本物理学会
    • Place of Presentation
      東海大学 湘南キャンパス
    • Related Report
      2013 Research-status Report
  • [Presentation] Au(111)上に形成したCoナノクラスターの構造と磁性2013

    • Author(s)
      岸水悠介, 上野哲朗, 沢田正博, 古田尚史, 木村昭夫, 生天目博文, 谷口雅樹
    • Organizer
      日本物理学会
    • Place of Presentation
      徳島大学 常三島キャンパス
    • Related Report
      2013 Research-status Report
  • [Presentation] In-situ Studies of Structure and Magnetic Properties of Co Clusters on Au(111)2013

    • Author(s)
      Y. Kishimizu, T. Ueno, M. Sawada, H. Furuta, A. Kimura, H. Namatame, M. Taniguchi
    • Organizer
      12th International Conference on Atomically Controlled Surfaces, Interfaces and Nanostructures
    • Place of Presentation
      つくば国際会議場
    • Related Report
      2013 Research-status Report

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Published: 2014-07-25   Modified: 2019-07-29  

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