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Control of magnetic properties of ultrathin film using exchange anisotropy

Research Project

Project/Area Number 19760460
Research Category

Grant-in-Aid for Young Scientists (B)

Allocation TypeSingle-year Grants
Research Field Physical properties of metals
Research InstitutionOsaka University

Principal Investigator

SHIRATSUCHI Yu  Osaka University, 大学院工学研究科, 助教 (70379121)

Project Period (FY) 2007 – 2008
Project Status Completed (Fiscal Year 2008)
Budget Amount *help
¥3,690,000 (Direct Cost: ¥3,300,000、Indirect Cost: ¥390,000)
Fiscal Year 2008: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
Fiscal Year 2007: ¥2,000,000 (Direct Cost: ¥2,000,000)
Keywords磁性超薄膜 / 交換磁気異方性 / 超常磁性 / 磁性ナノ粒子 / 磁気光学カー効果 / 直交磁化曲線 / 超薄膜 / ナノ粒子 / 磁化の熱安定性 / 磁化反転のエネルギー障壁 / 島状成長 / 微粒子間相互作用
Research Abstract

Tbit/inch^2級(Tは10^<12>.)の超高密度磁気記憶素子への応用を目指して,ナノサイズの磁性体の磁化方向(磁化方向とは,磁石のN極・S極の向き.)の安定化手法について検討した.結果として,強磁性体であるCo超薄膜の磁化の熱的安定性は,下地層として,反強磁性体であるα-Cr_2O_3(0001)薄膜を用いることで,非磁性体であるα-Al_2O_3(0001)基板上へ成長させた場合と比較して,200度以上も安定化されることを見出した.

Report

(3 results)
  • 2008 Annual Research Report   Final Research Report ( PDF )
  • 2007 Annual Research Report
  • Research Products

    (53 results)

All 2009 2008 2007 Other

All Journal Article (14 results) (of which Peer Reviewed: 10 results) Presentation (38 results) Patent(Industrial Property Rights) (1 results)

  • [Journal Article] Cr-O薄膜上に積層したCo超薄膜の構造と磁気特性2009

    • Author(s)
      白土優
    • Journal Title

      スピントロニクス・ナノ磁性材料の進展と将来展望

      Pages: 29-32

    • Related Report
      2008 Annual Research Report
  • [Journal Article] Fabrication of Cr oxide thin film and its influence on magnetic properties of ultrathin Co film2009

    • Author(s)
      Yu Shiratsuchi, Toshihiro Nakatani, Ryoichi Nakatani and Masahiko Yamamoto
    • Journal Title

      Journal of Physics : Conference Series (In-Press)

    • Related Report
      2008 Annual Research Report
    • Peer Reviewed
  • [Journal Article] 磁性を有する超薄膜・ハイブリッド多層膜・高品位人工格子の材料開発とデバイス化2009

    • Author(s)
      中谷亮一, 白土優, 野村光
    • Journal Title

      産業科学ナノテクノロジーセンターオープンラボラトリー年報 (掲載決定)

    • Related Report
      2008 Annual Research Report
  • [Journal Article] Contribution of Langevin behavior to the low temperature maximum of ZFC magnetization of the discontinuous Fe films2008

    • Author(s)
      白 土優, 中谷亮一, 山本雅彦
    • Journal Title

      Journal of Applied Physics 103

    • Related Report
      2008 Final Research Report
    • Peer Reviewed
  • [Journal Article] 磁場スイープMFM法の原理と磁化過程の観測2008

    • Author(s)
      中谷亮一, 白土優, 遠藤恭
    • Journal Title

      金属 78

      Pages: 30-35

    • Related Report
      2008 Annual Research Report 2008 Final Research Report
    • Peer Reviewed
  • [Journal Article] Cr-O薄膜上に積層したCo超薄膜の構造と磁気特性2008

    • Author(s)
      白土優
    • Journal Title

      日本金属学会「スピントロニクス・ナノ磁性材料の進展と将来展望」

      Pages: 29-32

    • Related Report
      2008 Final Research Report
  • [Journal Article] SrTiO_3(001)基板上に積層したCo超薄膜の構造と磁性2008

    • Author(s)
      白土優, 久富和郎, 中谷亮一
    • Journal Title

      ICICE Technical Reports 108

      Pages: 1-4

    • Related Report
      2008 Annual Research Report 2008 Final Research Report
  • [Journal Article] Contribution of Langevin behavior to the low temperature maximum of ZFC magnetization of the discontinuous Fe films2008

    • Author(s)
      Yu Shiratsuchi, Ryoichi Nakatani and Masahiko Yamamoto
    • Journal Title

      Journal of Applied Physics 103

    • Related Report
      2008 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Contribution of Langevin behavior to the low temperature maximum in zero-fieldcooled magnetization of the discontinuous Fe films2008

    • Author(s)
      Yu Shiratsuchi, Ryoichi Nakatani, Masahiko Yamamoto
    • Journal Title

      Journal of Applied Physcs 103inpress

    • Related Report
      2007 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Dominant factor of zero-field-cooled magnetization in discontinuous Fe films2007

    • Author(s)
      白土優, 山本雅彦
    • Journal Title

      Physical Review B 76

    • Related Report
      2008 Final Research Report
    • Peer Reviewed
  • [Journal Article] Trapping of Magnetic Domain Wall in Nickel Constriction2007

    • Author(s)
      佐藤純一, 遠藤恭, 白土優, 川村良雄, 山本雅彦, 村上善照, 高橋明
    • Journal Title

      Japanese Journal of Applied Physics 46

      Pages: 4117-4120

    • NAID

      40015465511

    • Related Report
      2008 Final Research Report
    • Peer Reviewed
  • [Journal Article] Dominant factor of zero-field-cooled magnetization in discontinuous Fe films2007

    • Author(s)
      Yu Shiratsuchi, MasahikoYamamoto
    • Journal Title

      Physical Review B 76

    • Related Report
      2007 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Trapping of Magnetic Domain Wall in Nickel Constriction2007

    • Author(s)
      Junichi Sato, Yasushi Endo, Yu Shiratsuchi, Yoshio Kawamura, RyoichiNakatani, Masahiko Yamamoto, Yoshiteru Murakami, Akira Takahashi
    • Journal Title

      Japanese Journal of Applied Physics 46

      Pages: 4117-4120

    • NAID

      40015465511

    • Related Report
      2007 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Fabrication of Cr oxide thin film and its influence on magnetic properties of ultrathin Co film

    • Author(s)
      白土優, 中谷俊博, 中谷亮一, 山本雅彦
    • Journal Title

      Journal of Physics : Conference Series (in-press)

    • Related Report
      2008 Final Research Report
    • Peer Reviewed
  • [Presentation] Au(111)表面上に作製したCr_2O_3(0001)Co超薄膜の磁気特性2009

    • Author(s)
      白土優, 中谷俊博, 河原信一, 中谷亮一
    • Organizer
      日本金属学会2009年春期講演大会
    • Place of Presentation
      東京工業大学
    • Year and Date
      2009-03-30
    • Related Report
      2008 Annual Research Report
  • [Presentation] SrTiO_3(001)基板上に作製したCo超薄膜の構造と磁性2009

    • Author(s)
      白土優, 久富和郎, 中谷亮一
    • Organizer
      日本金属学会2009年春期講演大会
    • Place of Presentation
      東京工業大学
    • Year and Date
      2009-03-30
    • Related Report
      2008 Annual Research Report
  • [Presentation] Fabrication of Cr_2O_3(0001) thin film toward the electronic control of magnetism2009

    • Author(s)
      白土優
    • Organizer
      Osaka University-Kookmin University Joint Symposium on Advanced Materials Science and Engineering 2009
    • Place of Presentation
      Osaka, Japan.
    • Year and Date
      2009-02-12
    • Related Report
      2008 Final Research Report
  • [Presentation] Fabrication of Cr_2O_3(0001) thin film toward the electronic control of magnetism[INVITED]2009

    • Author(s)
      Yu Shiratsuchi
    • Organizer
      Osaka University-Kookmin University Joint Symposium on Advanced Materials Science and Engineering 2009
    • Place of Presentation
      大阪大学
    • Year and Date
      2009-02-12
    • Related Report
      2008 Annual Research Report
  • [Presentation] SrTiO_3(001)基板上に積層したCo超薄膜の構造と磁性2009

    • Author(s)
      久富和郎, 白土優, 中谷亮一
    • Organizer
      日本金属学会分科会シンポジウム「スピントロニクス, 電子情報通信学会MR研究会
    • Place of Presentation
      松下電器産業
    • Year and Date
      2009-01-18
    • Related Report
      2008 Annual Research Report
  • [Presentation] Cr-O薄膜上に積層したCo超薄膜の構造と磁気特性【依頼講演】2009

    • Author(s)
      白土優
    • Organizer
      日本金属学会分科会シンポジウム「スピントロニクス, ナノ磁性材料の進展と将来展望」
    • Place of Presentation
      東北大学金属材料研究所
    • Year and Date
      2009-01-06
    • Related Report
      2008 Annual Research Report
  • [Presentation] Au(111)表面上に作製したCr_2O_3(0001)/Co超薄膜の磁気特性2009

    • Author(s)
      白土優, 中谷俊博, 河原信一, 中谷亮一
    • Organizer
      日本金属学会2009年春期大会
    • Place of Presentation
      東京工業大学(東京)
    • Related Report
      2008 Final Research Report
  • [Presentation] SrTiO_3(001)基板上に作製したCo超薄膜の構造と磁性2009

    • Author(s)
      白土優, 久富和郎, 中谷亮一
    • Organizer
      日本金属学会2009年春期大会
    • Place of Presentation
      東京工業大学(東京)
    • Related Report
      2008 Final Research Report
  • [Presentation] Cr-O薄膜上に積層したCo超薄膜の構造と磁気特性2009

    • Author(s)
      白土優
    • Organizer
      日本金属学会分科会シンポジウム「スピントロニクス,ナノ磁性材料の進展と将来展望」
    • Place of Presentation
      東北大学金属材料研究所(仙台)
    • Related Report
      2008 Final Research Report
  • [Presentation] SrTiO_3(001)基板上に積層したCo超薄膜の構造と磁性2009

    • Author(s)
      久富和郎, 白土優, 中谷亮一
    • Organizer
      電気情報通信学会MR研究会
    • Place of Presentation
      松下電器産業
    • Related Report
      2008 Final Research Report
  • [Presentation] Superparamagnetism of Ultrathin Co Film on Antiferromagnetic Cr_2O_3 Layer2008

    • Author(s)
      Yu Shiratsuchi, Toshihiro Nakatani, Ryoichi Nakatani and Masahiko Yamamoto
    • Organizer
      International Conference on Advanced Structural and Functional Materials Design 2008
    • Place of Presentation
      ホテル阪急エキスポパーク
    • Year and Date
      2008-11-12
    • Related Report
      2008 Annual Research Report
  • [Presentation] Improvement of magnetic thermal stability of ultrathin film using antiferromagnetic underlayer2008

    • Author(s)
      白土優
    • Organizer
      Osaka University - NIMS Yong Scientist Symposium on Advanced Structural and Functional Materials Design
    • Place of Presentation
      Osaka Japan
    • Year and Date
      2008-11-10
    • Related Report
      2008 Final Research Report
  • [Presentation] Improvement of magnetic thermal stability of ultrathin film using antiferromagnetic underlayer2008

    • Author(s)
      Yu Shiratsuchi
    • Organizer
      Osaka University-NIMS Yong Scientist Symposium on Advanced Structural and Functional Materials Design
    • Place of Presentation
      ホテル阪急エキスポパーク
    • Year and Date
      2008-11-10
    • Related Report
      2008 Annual Research Report
  • [Presentation] Effect of antiferromagnetic Cr_2O_3(0001) layer on superparamagnetic properties of ultrathin Co films2008

    • Author(s)
      Yu Shiratsuchi, Toshihiro Nakatani, Ryoichi Nakatani and Masahiko Yamamoto
    • Organizer
      Gordon Research Conference : Magnetic Nanostructures
    • Place of Presentation
      Center Paul Langevin, Aussois, France
    • Year and Date
      2008-09-02
    • Related Report
      2008 Annual Research Report
  • [Presentation] 島状成長したFe超薄膜の超常磁性【依頼講演】2008

    • Author(s)
      白土優
    • Organizer
      日本磁気学会ナノマグネティクス専門研究会
    • Place of Presentation
      中央大学
    • Year and Date
      2008-05-30
    • Related Report
      2008 Annual Research Report
  • [Presentation] Superparamagnetism of Ultrathin Co Film on Antiferromagnetic Cr_2O_3 Layer2008

    • Author(s)
      白土優, 中谷俊博, 中谷亮一, 山本雅彦
    • Organizer
      International Conference on Advanced Structural and Functional Materials Design 2008
    • Place of Presentation
      Osaka, Japan.
    • Related Report
      2008 Final Research Report
  • [Presentation] Effect of antiferromagnetic Cr_2O_3(0001) layer on superparamagnetic properties of ultrathin Co films2008

    • Author(s)
      白土優, 中谷俊博, 中谷亮一, 山本雅彦
    • Organizer
      Gordon Research Conference : Magnetic Nanostructures
    • Place of Presentation
      Aussois, France.
    • Related Report
      2008 Final Research Report
  • [Presentation] 島状成長したFe超薄膜の超常磁性2008

    • Author(s)
      白土優
    • Organizer
      日本磁気学会ナノマグネティクス専門研究会
    • Place of Presentation
      中央大学(東京)
    • Related Report
      2008 Final Research Report
  • [Presentation] Ni^<2+>イオンと反応させた蛋白質PfVの磁気的性質2008

    • Author(s)
      白土優, 三浦純幸, 秋田総理, 遠藤恭, 中谷亮一, 山本雅彦, 中川敦司, 月原富武
    • Organizer
      日本金属学会2008年春期大会
    • Place of Presentation
      武蔵工業大学(東京)
    • Related Report
      2008 Final Research Report
  • [Presentation] 微小磁性体を使ったデバイスの検討2008

    • Author(s)
      中谷亮一, 遠藤恭, 白土優
    • 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
      東北大学(仙台)
    • Related Report
      2008 Final Research Report
  • [Presentation] Contribution of Langevin behavior to the low temperature maximum in ZFCmagnetization of the discontinuous Fe films2007

    • Author(s)
      Yu Shiratsuchi, Ryoichi Nakatani, Masahiko Yamamoto
    • Organizer
      52nd Annual Conference on Magnetism and MagneticMaterials
    • Place of Presentation
      Tampa, USA
    • Year and Date
      2007-11-07
    • Related Report
      2007 Annual Research Report
  • [Presentation] SUPERPARAMAGNETISM OF DISCONTINUOUS ULTRATHIN Co FILMONANTIFERROMAGNETIC Cr_2O_3 LAYER2007

    • Author(s)
      Yu Shiratsuchi, Toshihiro Nakatani, Ryoichi Nakatani, MasahikoYamamoto
    • Organizer
      6th International Conference on Fine Particle Magnetism
    • Place of Presentation
      Roma, Italy
    • Year and Date
      2007-10-10
    • Related Report
      2007 Annual Research Report
  • [Presentation] Thermal stability of magnetization of ultrathin Co film on antiferromagnetic Cr_2O_32007

    • Author(s)
      Yu Shiratsuchi, Toshihiro Nakatani, Yasushi Endo, Ryoichi Nakatani, Masahiko Yamamoto
    • Organizer
      2nd International Symposium on Atomic Technology
    • Place of Presentation
      淡路,兵庫
    • Year and Date
      2007-10-01
    • Related Report
      2007 Annual Research Report
  • [Presentation] Implantation of magnetic ion into Pyrococcus furiosus virus-like particles (PfVs)2007

    • Author(s)
      Yu Shiratsuchi,
    • Organizer
      2nd International Symposium on Atomic Technology
    • Place of Presentation
      淡路,兵庫
    • Year and Date
      2007-10-01
    • Related Report
      2007 Annual Research Report
  • [Presentation] Effect of antiferromagnetic Cr_2O_3 layer on the magnetic properties of ultrathiCo film2007

    • Author(s)
      Yu Shiratsuchi,
    • Organizer
      Handai Nanoscience and Nanotechnology International Symposium
    • Place of Presentation
      吹田市,大阪
    • Year and Date
      2007-09-26
    • Related Report
      2007 Annual Research Report
  • [Presentation] Magnetic properties of Pyrococcus furiosus virus-like particles (PfVs) reacted with Niions2007

    • Author(s)
      Yu Shiratsuchi,
    • Organizer
      Handai Nanoscience and Nanotechnology International Symposium
    • Place of Presentation
      吹田市,大阪
    • Year and Date
      2007-09-26
    • Related Report
      2007 Annual Research Report
  • [Presentation] Cr-O/MgO(001)上に作製したCo超薄膜の磁気特性2007

    • Author(s)
      白土優, 中谷俊博, 中谷亮一, 山本雅彦
    • Organizer
      日本金属学会2007年秋期大会
    • Place of Presentation
      岐阜大学
    • Year and Date
      2007-09-21
    • Related Report
      2007 Annual Research Report
  • [Presentation] 結晶配向性の異なるCr-O薄膜上に積層したCo超薄膜の磁気特性2007

    • Author(s)
      白土優, 中谷俊博, 中谷亮一, 山本雅彦
    • Organizer
      第31回日本応用磁気学会学術講演会
    • Place of Presentation
      学習院大学
    • Year and Date
      2007-09-14
    • Related Report
      2007 Annual Research Report
  • [Presentation] Superparamagnetism of nanoparticles fabricated by the island growth of ultrathifilm2007

    • Author(s)
      Yu Shiratsuchi
    • Organizer
      ICYS-ICMR Summer School
    • Place of Presentation
      つくば市,茨城
    • Year and Date
      2007-07-22
    • Related Report
      2007 Annual Research Report
  • [Presentation] Contribution of Langevin behavior to the low temperature maximum in ZFC magnetization of the discontinuous Fe films2007

    • Author(s)
      白土優, 中谷亮一, 山本雅彦
    • Organizer
      52nd Annual Conference on Magnetism and Magnetic Materials
    • Place of Presentation
      Tampa, USA.
    • Related Report
      2008 Final Research Report
  • [Presentation] Superparamagnetism of discontinuous ultrathin Co film on antiferromagnetic Cr_2O_3 layer2007

    • Author(s)
      白土優, 中谷俊博, 中谷亮一, 山本雅彦
    • Organizer
      International Conference on Fine Particle Magnetism 2007
    • Place of Presentation
      Roma, Italy.
    • Related Report
      2008 Final Research Report
  • [Presentation] Thermal stability of magnetization of ultrathin Co film on antiferromagnetic Cr_2O_32007

    • Author(s)
      白土優, 中谷俊博, 加瀬隆, 中谷亮一, 山本雅彦
    • Organizer
      2nd International Symposium on Atomic Technology
    • Place of Presentation
      Awaji, Japan.
    • Related Report
      2008 Final Research Report
  • [Presentation] Magnetic properties of Pyrococcus furiosus virus-like particles (PfVs) reacted with Ni ions2007

    • Author(s)
      白土優, 三浦純幸, 秋田総理, 東俊祐, 遠藤恭, 中谷亮一, 山本雅彦, 中川敦, 月原冨武
    • Organizer
      2nd International Symposium on Atomic Technology
    • Place of Presentation
      Awaji, Japan.
    • Related Report
      2008 Final Research Report
  • [Presentation] Cr-O/MgO(001)上に作製したCo超薄膜の磁気特性2007

    • Author(s)
      白土優, 中谷俊博, 中谷亮一, 山本雅彦
    • Organizer
      日本金属学会2007年秋期講演大会
    • Place of Presentation
      岐阜大学(岐阜市)
    • Related Report
      2008 Final Research Report
  • [Presentation] 結晶配向性の異なるCr-O薄膜上に積層したCo超薄膜の磁気特性2007

    • Author(s)
      白土優, 中谷俊博, 加瀬崇, 中谷亮一, 山本雅彦
    • Organizer
      第31回日本応用磁気学会学術講演会
    • Place of Presentation
      学習院大学(東京)
    • Related Report
      2008 Final Research Report
  • [Presentation] Effect of antiferromagnetic Cr_2O_3 layer on the magnetic properties of ultrathin Co film2007

    • Author(s)
      白土優, 中谷俊博, 加瀬崇, 中谷亮一, 山本雅彦
    • Organizer
      Handai Nanoscience and Nanotechnology International Syposium
    • Place of Presentation
      Suita, Japan.
    • Related Report
      2008 Final Research Report
  • [Presentation] Implantation of magnetic ion into Pyrococcus furiosus virus-like particles (PfVs)2007

    • Author(s)
      白土優, 三浦純幸, 秋田総理, 東俊祐, 遠藤恭, 中谷亮一, 山本雅彦, 中川敦, 月原冨武
    • Organizer
      Handai Nanoscience and Nanotechnology International Syposium
    • Place of Presentation
      Suita, Japan.
    • Related Report
      2008 Final Research Report
  • [Presentation] Superparamagnetism of nanoparticles fabricated by the island growth of ultrathin film2007

    • Author(s)
      白土優
    • Organizer
      ICYS-ICMR Summer School 2007
    • Place of Presentation
      Tsukuba, Japan.
    • Related Report
      2008 Final Research Report
  • [Patent(Industrial Property Rights)] 電圧誘起磁化反転を用いた磁気メモリとその製造方法2009

    • Inventor(s)
      白土優, 中谷亮一
    • Industrial Property Rights Holder
      大阪大学
    • Industrial Property Number
      2009-054827
    • Filing Date
      2009-03-09
    • Related Report
      2008 Final Research Report

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Published: 2007-04-01   Modified: 2016-04-21  

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