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Fabrication of full metal CPP-spin valves with atomic order spacer layer and their magnetoresistance effect

Research Project

Project/Area Number 23651144
Research Category

Grant-in-Aid for Challenging Exploratory Research

Allocation TypeMulti-year Fund
Research Field Microdevices/Nanodevices
Research InstitutionTohoku University

Principal Investigator

TSUNODA Masakiyo  東北大学, 大学院・工学研究科, 准教授 (80250702)

Research Collaborator TAKAHASHI Hirokazu  東北大学, 大学院・工学研究科, 博士後期課程
Project Period (FY) 2011 – 2012
Project Status Completed (Fiscal Year 2012)
Budget Amount *help
¥3,770,000 (Direct Cost: ¥2,900,000、Indirect Cost: ¥870,000)
Fiscal Year 2012: ¥1,820,000 (Direct Cost: ¥1,400,000、Indirect Cost: ¥420,000)
Fiscal Year 2011: ¥1,950,000 (Direct Cost: ¥1,500,000、Indirect Cost: ¥450,000)
Keywords磁性 / 磁気抵抗効果 / スピントロニクス / 交換磁気異方性 / スピンバルブ
Research Abstract

In order to develop a multilayer material in which magnetic moments steeply change their direction within atomic-order thickness, current-perpendicular to plane (CPP) magnetoresistance thin-film devices, consisted of Co based ferromagnetic layer and Ru spacer layer, were fabricated with UHV-sputtering method, and their transport properties were investigated. The interfacial uncompensated spins of Mn-Ir/ ferromagnetic bilayerswere also investigated with changing the ferromagnetic material. As a result, the exchange interaction at the interface and crystal structure of the ferromagnet were found to be important for large exchange anisotropy.

Report

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

    (13 results)

All 2012 2011 Other

All Journal Article (8 results) (of which Peer Reviewed: 8 results) Presentation (4 results) Remarks (1 results)

  • [Journal Article] Current-induced switching of exchange bias in nano-scaled magnetic tunnel junctions with a synthetic antiferromagnetic pinned layer2012

    • Author(s)
      C. T. Chao, C. Y. Kuo, L. Horng, M.Tsunoda, M. Takahashi, and J. C. Wu
    • Journal Title

      Journal of Applied Physics

      Volume: 111巻 Issue: 7

    • DOI

      10.1063/1.3673811

    • Related Report
      2012 Annual Research Report 2012 Final Research Report
    • Peer Reviewed
  • [Journal Article] An atomic model calculation of exchange anisotropy and uncompensated spin element in antiferromagnetic layer : An effect of exchange coupling with various ferromagnetic materials2012

    • Author(s)
      C. Mitsumata, M. Tsunoda, H. Takahashi, and A. Sakuma
    • Journal Title

      Europhysics Letters

      Volume: 99 Issue: 4 Pages: 47006-47006

    • DOI

      10.1209/0295-5075/99/47006

    • Related Report
      2012 Annual Research Report 2012 Final Research Report
    • Peer Reviewed
  • [Journal Article] Effect of Thermal Fluctuations of Magnetization on Perpendicular Exchange Anisotropy in Mn-Ir / [Co / Pt]<i><sub>n</sub></i> Multilayers2012

    • Author(s)
      高橋宏和,角田匡清,高橋研
    • Journal Title

      Journal of the Magnetics Society of Japan

      Volume: 36 Issue: 5 Pages: 313-317

    • DOI

      10.3379/msjmag.1207R001

    • NAID

      130002112219

    • ISSN
      1882-2924, 1882-2932
    • Related Report
      2012 Final Research Report
    • Peer Reviewed
  • [Journal Article] Perpendicular Exchange Anisotropy in Mn-Ir/Fe-Co/[Pt/Co]_4 Multilayers2012

    • Author(s)
      H. Takahashi, M. Tsunoda, and M. Takahashi
    • Journal Title

      IEEE Transactions on Magnetics

      Volume: 48 Issue: 11 Pages: 4347-4350

    • DOI

      10.1109/tmag.2012.2196760

    • Related Report
      2012 Annual Research Report 2012 Final Research Report
    • Peer Reviewed
  • [Journal Article] Mn-Ir/[Co/Pt]n積層膜における磁化の熱揺らぎが垂直交換磁気異方性に与える影響2012

    • Author(s)
      高橋宏和,角田匡清,高橋研
    • Journal Title

      Journal of Magnetics Society of Japan

      Volume: 36 Pages: 313-317

    • NAID

      130002112219

    • Related Report
      2012 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Coupling strength with off-axial external field in magnetic tunnel junction cells2011

    • Author(s)
      C. T. Chao, C. Y. Kuo, C. C. Chen, L. Horng, Y. J. Chang, T. Wu, S. Isogmi, M. Tsunoda, M. Takahashi, and J. C. Wu
    • Journal Title

      Journal of Applied Physics

      Volume: 109 Issue: 7

    • DOI

      10.1063/1.3560047

    • Related Report
      2012 Final Research Report 2011 Research-status Report
    • Peer Reviewed
  • [Journal Article] Uncompensated antiferromagnetic moments in Mn-Ir/FM (FM=Ni-Co, Co-Fe, Fe-Ni) bilayers : Compositional dependence and its origin2011

    • Author(s)
      Hirokazu Takahashi, Yohei Kota, Masakiyo Tsunoda, Tetsuya Nakamura, Kenji Kodama, Akimasa Sakuma, Migaku Takahashi
    • Journal Title

      Journal of Applied Physics

      Volume: 110 Issue: 12

    • DOI

      10.1063/1.3672450

    • Related Report
      2012 Final Research Report 2011 Research-status Report
    • Peer Reviewed
  • [Journal Article] Soft X-ray Magnetic Circular Dichroism of a CoFe/MnIr Exchange Bias Film under Pulsed High Magnetic Field2011

    • Author(s)
      Tetsuya Nakamura, Yasuo Narumi, Toko Hirono, Misaki Hayashi, Kenji Kodama, Masakiyo Tsunoda, Shinji Isogami, Hirokazu Takahashi, Toyohiko Kinoshita, Koichi Kindo, Hiroyuki Nojiri
    • Journal Title

      Applied Physics Express

      Volume: 4 Issue: 6 Pages: 066602-066602

    • DOI

      10.1143/apex.4.066602

    • Related Report
      2012 Final Research Report 2011 Research-status Report
    • Peer Reviewed
  • [Presentation] Orientational Dependence of Perpendicular Exchange Anisotropy inMn-Ir/Co-Fe/Pd/[Co/Pd]4 Multilayers2012

    • Author(s)
      H. Takahashi and M. Tsunoda
    • Organizer
      The 2nd International Conference of AUMS
    • Place of Presentation
      奈良
    • Related Report
      2012 Final Research Report
  • [Presentation] Perpendicular Exchange Anisotropy in Mn-Ir/Fe-Co/[Pt/Co] Multilayers2012

    • Author(s)
      H. Takahashi, M. Tsunoda, and M.Takahashi
    • Organizer
      IEEE International Magnetics Conference
    • Place of Presentation
      バンクーバー(カ ナダ)
    • Related Report
      2012 Final Research Report
  • [Presentation] Perpendicular Exchange Anisotropy in Mn-Ir/Fe-Co/[Pt/Co] Multilayers2012

    • Author(s)
      H. Takahashi, M. Tsunoda, and M. Takahashi
    • Organizer
      IEEE International Magnetics Conference
    • Place of Presentation
      バンクーバー(カナダ)
    • Related Report
      2012 Annual Research Report
  • [Presentation] Orientational Dependence of Perpendicular Exchange Anisotropy in Mn-Ir/Co-Fe/Pd/[Co/Pd]4 Multilayers2012

    • Author(s)
      H. Takahashi and M. Tsunoda
    • Organizer
      The 2nd International Conference of AUMS
    • Place of Presentation
      奈良県新公会堂(奈良県)
    • Related Report
      2012 Annual Research Report
  • [Remarks]

    • URL

      http://www.ecei.tohoku.ac.jp/ecei_web/Laboratory/takahashi_j_index.html

    • Related Report
      2012 Final Research Report

URL: 

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

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