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Induced magnetism studied by magnetic spectroscopy under external field

Research Project

Project/Area Number 24686007
Research Category

Grant-in-Aid for Young Scientists (A)

Allocation TypePartial Multi-year Fund
Research Field Thin film/Surface and interfacial physical properties
Research InstitutionThe University of Tokyo

Principal Investigator

OKABAYASHI Jun  東京大学, 理学(系)研究科(研究院), 准教授 (70361508)

Project Period (FY) 2012-04-01 – 2015-03-31
Project Status Completed (Fiscal Year 2014)
Budget Amount *help
¥26,910,000 (Direct Cost: ¥20,700,000、Indirect Cost: ¥6,210,000)
Fiscal Year 2013: ¥10,790,000 (Direct Cost: ¥8,300,000、Indirect Cost: ¥2,490,000)
Fiscal Year 2012: ¥16,120,000 (Direct Cost: ¥12,400,000、Indirect Cost: ¥3,720,000)
Keywords電子分光 / 磁気分光 / スピントロニクス / 界面 / 磁気円二色性 / 界面磁性 / 誘起磁性 / 軌道磁気モーメント / 結晶成長 / 外場印加 / 磁性体
Outline of Final Research Achievements

We have investigated the controllability of the exchange interaction by external fields in magnetic impurities and magnetic interfaces. We developed the new instruments for magnetic spectroscopy measuring the spin and orbital magnetic moments. We discussed two topics: (i) the doner-exchange interaction through the oxygen vacancies in magnetic oxide semiconductors and (ii) the mechanism of perpendicular magnetic anisotropy at the interface between ferromagnetic alloys and MgO. We found that the Fe-O chemical bonding becomes an essential role, which brings the control of anisotropy by the external fields.

Report

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

    (7 results)

All 2015 2014 2013

All Journal Article (2 results) (of which Peer Reviewed: 2 results,  Acknowledgement Compliant: 1 results) Presentation (5 results)

  • [Journal Article] Perpendicular magnetic anisotropy at the interface between ultrathin Fe film and MgO studied by angular-dependent x-ray magnetic circular dichroism2014

    • Author(s)
      J. Okabayashi
    • Journal Title

      Applied Physics Letters

      Volume: 105 Issue: 12 Pages: 1224081-5

    • DOI

      10.1063/1.4896290

    • Related Report
      2014 Annual Research Report
    • Peer Reviewed / Acknowledgement Compliant
  • [Journal Article] Large anisotropic Fe orbital moments in perpendicularly magnetized Co2FeAl Heusler alloy thin films revealed by angular-dependent x-ray magnetic circular dicroism2013

    • Author(s)
      J. Okabayashi, H. Sukegawa, Z. C. Wen, K. Inomata and S. Mitani
    • Journal Title

      Appl. Phys. Lett.

      Volume: 103 Issue: 10 Pages: 1024021-4

    • DOI

      10.1063/1.4819915

    • Related Report
      2013 Annual Research Report
    • Peer Reviewed
  • [Presentation] Observation of perpendicular magnetization in Cu layer inserted between Co and Pt layers2015

    • Author(s)
      岡林潤
    • Organizer
      応用物理学会
    • Place of Presentation
      東海大学
    • Year and Date
      2015-03-11 – 2015-03-14
    • Related Report
      2014 Annual Research Report
  • [Presentation] 内殻磁気円二色性を用いたFe/MgO界面における内殻磁気円二色性を用いたFe/MgO界面における2015

    • Author(s)
      岡林潤
    • Organizer
      日本放射光学会
    • Place of Presentation
      立命館大学
    • Year and Date
      2015-01-10 – 2015-01-12
    • Related Report
      2014 Annual Research Report
  • [Presentation] Interface perpendicular magnetic anisotropy between ultrathin Fe film and MgO studied by x-ray magnetic circular dichroism2014

    • Author(s)
      岡林潤
    • Organizer
      応用物理学会
    • Place of Presentation
      北海道大学
    • Year and Date
      2014-09-17 – 2014-09-20
    • Related Report
      2014 Annual Research Report
  • [Presentation] Large anisotropic Fe orbital moments in perpendicularly magnetized Co2FeAl Heusler alloy thin films revealed by angular-dependent x-ray magnetic circular dichroism2014

    • Author(s)
      J. Okabayashi
    • Organizer
      応用物理学会
    • Place of Presentation
      青山学院大学
    • Related Report
      2013 Annual Research Report
  • [Presentation] Large anisotropic Fe orbital moments in perpendicularly magnetized Co2FeAl Heusler alloy thin films revealed by angular-dependent x-ray magnetic circular dichroism2014

    • Author(s)
      J. Okabayashi
    • Organizer
      日本放射光学会
    • Place of Presentation
      広島国際会議場
    • Related Report
      2013 Annual Research Report

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

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