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Development of CoPtRh granular media high uniaxial magnetocrystalline anisotropy for heat assisting magnetic recording

Research Project

Project/Area Number 26820109
Research Category

Grant-in-Aid for Young Scientists (B)

Allocation TypeMulti-year Fund
Research Field Electronic materials/Electric materials
Research InstitutionTohoku University

Principal Investigator

HINATA Shintaro  東北大学, 工学研究科, 助教 (20633960)

Project Period (FY) 2014-04-01 – 2017-03-31
Project Status Completed (Fiscal Year 2016)
Budget Amount *help
¥4,030,000 (Direct Cost: ¥3,100,000、Indirect Cost: ¥930,000)
Fiscal Year 2016: ¥1,950,000 (Direct Cost: ¥1,500,000、Indirect Cost: ¥450,000)
Fiscal Year 2015: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2014: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Keywords熱アシスト磁気記録 / 一軸結晶磁気異方性 / 積層欠陥 / グラニュラ構造 / CoPtRh / Co基合金薄膜 / 原子層組成変調構造
Outline of Final Research Achievements

A granular medium with columnar structure with huge-uniaxial-magnetogrystalline-anisotropy (Ku) CoPtRh was investigated for future thermally assisted recording system.
As a result of the research, it was found that; 1) To obtain high-Ku CoPtRh based alloy, depositing CoPt based alloy with average valence electron number of 9 or less under substrate temperature of 300 oC. 2) To obtain granular medium with columnar structure, addition of composite material consist of low- and high-melting-point oxides, such as B2O3+TiO2 is effective to form a non-magnetic boundary.

Report

(4 results)
  • 2016 Annual Research Report   Final Research Report ( PDF )
  • 2015 Research-status Report
  • 2014 Research-status Report
  • Research Products

    (15 results)

All 2017 2016 2015 2014

All Journal Article (7 results) (of which Peer Reviewed: 4 results,  Open Access: 2 results) Presentation (8 results) (of which Int'l Joint Research: 4 results)

  • [Journal Article] Variation of effective damping factor for CoPt-based alloy films with various atomic stacking structures2017

    • Author(s)
      Shintaro Hinata and Shin Saito
    • Journal Title

      AIP Advances

      Volume: 7 Issue: 5 Pages: 1-8

    • DOI

      10.1063/1.4978638

    • Related Report
      2016 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Characterization of CoPt-based granular media with intergranular magnetic interaction by Q-band ferromagnetic resonance2016

    • Author(s)
      Shintaro Hinata, Daiji Hasegawa and Shin Saito
    • Journal Title

      IEICE Technical Report

      Volume: 116 Pages: 1-4

    • Related Report
      2016 Annual Research Report
  • [Journal Article] Compositional dependence of Cr100-xTix texture-inducing layer underlying (002) textured bcc-Cr alloy seed layer for FePt-C based heat-assisted magnetic recording media2016

    • Author(s)
      Seong-Jae Jeon, Shintaro Hinata and Shin Saito
    • Journal Title

      IEICE Technical Report

      Volume: 116 Pages: 5-9

    • Related Report
      2016 Annual Research Report
  • [Journal Article] Effect of oxide boundary materials on magnetic properties for CoPt-based granular media2016

    • Author(s)
      Kim Kong Tham. Ryosuke Kushibiki, Shintaro Hinata and Shin Saito
    • Journal Title

      IEICE Technical Report

      Volume: 116 Pages: 11-16

    • NAID

      40020873860

    • Related Report
      2016 Annual Research Report
  • [Journal Article] Effect of additional elements on compositional modulated atomic layered structure of hexagonal Co80Pt20 alloy films with superlattice diffraction2016

    • Author(s)
      Shintaro Hinata, Akira Yamane and Shin Saito
    • Journal Title

      AIP Advances

      Volume: 6 Issue: 5 Pages: 1-9

    • DOI

      10.1063/1.4944668

    • Related Report
      2015 Research-status Report
    • Peer Reviewed
  • [Journal Article] Metal-oxide buffer layer for maintaining topological bumpy surface underlayer of columnar CoPt-SiO2 granular media deposited at high substrate temperature2015

    • Author(s)
      Shin Saito, Naoki Nozawa, Shintaro Hinata, Migaku Takahashi, Kazunari Shibuya, Kazuya Hoshino, and Satoru Awaya
    • Journal Title

      Journal of Applied Physics

      Volume: 116

    • Related Report
      2014 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Evaluation of Atomic Layer Stacking Structure and Curie Temperature of Magnetic Films for Thermally Assisted Recording Media2014

    • Author(s)
      Shin Saito, Shintaro Hinata and Migaku Takahashi
    • Journal Title

      IEEE Transactions on Magnetics

      Volume: 50 Issue: 3 Pages: 1-5

    • DOI

      10.1109/tmag.2013.2285286

    • Related Report
      2014 Research-status Report
    • Peer Reviewed / Open Access
  • [Presentation] Deposition Process and Surface Morphology of MgO Underlayer for FePt based HAMR2017

    • Author(s)
      Shintaro Hinata, Shin Saito
    • Organizer
      ASTC Spring 2017 Research Review Meeting
    • Place of Presentation
      Santa Clara, California, USA
    • Year and Date
      2017-03-15
    • Related Report
      2016 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Variation of effective damping factor for CoPt-based alloy films with various atomic stacking structures2016

    • Author(s)
      Shintaro Hinata, Shin Saito
    • Organizer
      61st Annual Conference on Magnetism and Magnetic Materials
    • Place of Presentation
      New Orleans, Louisiana, USA
    • Year and Date
      2016-10-31
    • Related Report
      2016 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Curie temperature measurement of FePt film by infrared reflectivity2016

    • Author(s)
      Seong-Jae Jeon, Koichi Akahane, Shintaro Hinata, Shin Saito
    • Organizer
      International Conference of the Asian Union of Magnetics Societies
    • Place of Presentation
      Tainan, Taiwan
    • Year and Date
      2016-08-01
    • Related Report
      2016 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Ferromagnetic resonance for CoPt-based granular films with intergranular magnetic interaction2016

    • Author(s)
      Shin Saito, Shintaro Hinata
    • Organizer
      International Conference of the Asian Union of Magnetics Societies
    • Place of Presentation
      Tainan, Taiwan
    • Year and Date
      2016-08-01
    • Related Report
      2016 Annual Research Report
    • Int'l Joint Research
  • [Presentation] 粒間相互作用を有するCoPt基グラニュラ媒体のQ-band強磁性共鳴によるキャラクタリゼーション2016

    • Author(s)
      日向慎太朗・長谷川大二・斉藤 伸
    • Organizer
      磁気記録・情報ストレージ研究会
    • Place of Presentation
      東北大学片平キャンパス, 仙台
    • Related Report
      2016 Annual Research Report
  • [Presentation] Compositional dependence of Cr100-xTix texture-inducing layer underlying (002) textured bcc-Cr alloy seed layer for FePt-C based heat-assisted magnetic recording media2016

    • Author(s)
      Seong-Jae Jeon, Shintaro Hinata, Saito Shin
    • Organizer
      磁気記録・情報ストレージ研究会
    • Place of Presentation
      東北大学片平キャンパス, 仙台
    • Related Report
      2016 Annual Research Report
  • [Presentation] CoPt基グラニュラ媒体の磁気特性におよぼす粒界酸化物種の効果2016

    • Author(s)
      タム キム コング, 櫛引了輔, 日向慎太朗, 斉藤 伸
    • Organizer
      磁気記録・情報ストレージ研究会
    • Place of Presentation
      東北大学片平キャンパス, 仙台
    • Related Report
      2016 Annual Research Report
  • [Presentation] 六方晶Co80Pt20合金薄膜の原子層組成変調構造に及ぼす添加元素の効果 (I)2015

    • Author(s)
      日向慎太朗,山根明,斉藤伸
    • Organizer
      日本磁気学会
    • Place of Presentation
      北海道大学 (札幌)
    • Year and Date
      2015-09-11
    • Related Report
      2015 Research-status Report

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Published: 2014-04-04   Modified: 2018-03-22  

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