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Hexagonal ferrite thin films with nano-dot structure for high density patterned medium

Research Project

Project/Area Number 21360148
Research Category

Grant-in-Aid for Scientific Research (B)

Allocation TypeSingle-year Grants
Section一般
Research Field Electronic materials/Electric materials
Research InstitutionShinshu University

Principal Investigator

MORISAKO Akimitsu  信州大学, 工学部, 教授 (20115380)

Co-Investigator(Kenkyū-buntansha) LIU Xiaoxi  信州大学, 工学部, 准教授 (10372509)
YASUKAWA Yukiko  信州大学, 工学部, 特任助教 (10458995)
Project Period (FY) 2009 – 2011
Project Status Completed (Fiscal Year 2011)
Budget Amount *help
¥18,590,000 (Direct Cost: ¥14,300,000、Indirect Cost: ¥4,290,000)
Fiscal Year 2011: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
Fiscal Year 2010: ¥2,730,000 (Direct Cost: ¥2,100,000、Indirect Cost: ¥630,000)
Fiscal Year 2009: ¥14,170,000 (Direct Cost: ¥10,900,000、Indirect Cost: ¥3,270,000)
Keywords高密度磁気記録 / バリウムフェライト薄膜 / ナノドット / スパッタ / 自己組織 / ナノスポット結晶化 / パターン媒体 / 磁気ドット / 自己組織化 / Srフェライト / 六方晶フェライト / 高密度記録 / パターン化媒体 / ナノドット薄膜 / 垂直磁化膜 / ストロンチウムフェライト薄膜 / 金薄膜
Research Abstract

In order to store all of the digital information in the world, HDD with huge capacity an high recording density are necessary. In this study, synthesis of a patterned media using hexagonal ferrite thin films with self assembled nano-dot structure has been tried for future high density recording media. Two under-layer, which are Si-Al layer and Au nano-dot layer have been used for the under layer of hexagonal ferrite layer. Ferrite layer is non-magnetic when it is amorphous. The crystallization temperature of ferrite layer on metal under-layer is much lower than that of non metallic under layer. The idea of this research is nano-dot crystallization of hexagonal ferrite layer with self-assembled metal nano-dot area. The MFM images show that hexagonal ferrite layer seems to be crystallized on Au nano-dot parts and other area is still amorphous and non-magnetic.

Report

(4 results)
  • 2011 Annual Research Report   Final Research Report ( PDF )
  • 2010 Annual Research Report
  • 2009 Annual Research Report
  • Research Products

    (17 results)

All 2011 2010 2009

All Journal Article (10 results) (of which Peer Reviewed: 10 results) Presentation (7 results)

  • [Journal Article] Underlayer dependence of microtexture, microstructure and magnetic properties of c-axis oriented strontium ferrite thin films2010

    • Author(s)
      Arkom Kaewrawang, Ali Ghasemi, Xiaoxi Liu, Akimitsu Morisako
    • Journal Title

      Thin Solid Films

      Volume: Vol.518, No.23 Pages: 7059-7063

    • Related Report
      2011 Final Research Report
    • Peer Reviewed
  • [Journal Article] Self-assembledstrontium ferrite dot array on Au underlayer2010

    • Author(s)
      Arkom Kaewrawang, Ali Ghasemi, Xiaoxi Liu, Akimitsu Morisako
    • Journal Title

      Journal of Magnetism and Magnetic Materials

      Volume: Vol.322, No.14 Pages: 2042-2046

    • Related Report
      2011 Final Research Report
    • Peer Reviewed
  • [Journal Article] Fabrication, crystallographic and magnetic properties of SrM perpendicular films on Au nano-dot arrays2010

    • Author(s)
      Arkom Kaewrawang, Ali Ghasemi, Xiaoxi Liu, Akimitsu Morisako
    • Journal Title

      Journal of Alloys and Compound

      Volume: Vol.492, No.1-2 Pages: 44-47

    • Related Report
      2011 Final Research Report
    • Peer Reviewed
  • [Journal Article] A simple method toward high density SrM dot arrays2010

    • Author(s)
      A.Kaewrawang, A.Ghasemi, X.Liu, A.Morisako
    • Journal Title

      J.Magn.Soc.Jpn

      Volume: 34 Pages: 277-280

    • Related Report
      2010 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Self-assembled Strontium ferrite dot array on Au unerlayer2010

    • Author(s)
      A.Kaewrawang, A.Ghasemi, X.Liu, A.Morisako
    • Journal Title

      J.Mag.Magn.Mat.

      Volume: 322 Pages: 2043-2046

    • Related Report
      2010 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Fabrication, crystallographic properties of SrM perpendicular films on Au nano-dot arrays2010

    • Author(s)
      A.Kaewrawang, A.Ghasemi, X.Liu, A.Morisako
    • Journal Title

      J.Alloys and Compound

      Volume: 492 Pages: 44-47

    • Related Report
      2010 Annual Research Report
    • Peer Reviewed
  • [Journal Article] A simple method toward high density SrM dot arrays2010

    • Author(s)
      A.Kaewrawang, A.Ghasemi, X.Liu, A.Morisako
    • Journal Title

      Journal of Magnetic Sociery of Japan 34

      Pages: 277-280

    • Related Report
      2009 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Properties of Sr Ferrite Thin Films on Al-Si Underlayer2009

    • Author(s)
      Arkom Kaewrawang, Ali Ghasemi, Xiaoxi Liu, Akimitsu Morisako
    • Journal Title

      IEEE Trans. on MAG

      Volume: Vol.45, No.6 Pages: 2587-2589

    • Related Report
      2011 Final Research Report
    • Peer Reviewed
  • [Journal Article] Properties of Sr Ferrite Thin Films on Al-Si Underlayer2009

    • Author(s)
      A.Kaewrawang, A.Ghasemi, X.Liu, A.Morisako
    • Journal Title

      IEEE Transactions on Magnetics 45

      Pages: 2587-2589

    • Related Report
      2009 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Crystallographic and magnetic properties of SrM thin films on Pt underlayer prepared at various substrate temperatures2009

    • Author(s)
      A.Kaewrawang, A.Ghasemi, X.Liu, A.Morisako
    • Journal Title

      Journal of Magnetism and Magnetic Materials 321

      Pages: 1939-1942

    • Related Report
      2009 Annual Research Report
    • Peer Reviewed
  • [Presentation] Indication of Magnetoelectric Properties in BiFeO3/(001)SrFe12O19 Bilayers2011

    • Author(s)
      Yukiko Yasukawa
    • Organizer
      56th Conference on Magnetism and Magnetic Materials
    • Place of Presentation
      Scottsdale, Arizona, USA
    • Year and Date
      2011-10-31
    • Related Report
      2011 Annual Research Report
  • [Presentation] ストロンチウムフェライト薄膜の形成および磁気特性2011

    • Author(s)
      小川幸伸,中村肇,安川雪子,劉小晰,森迫昭光
    • Organizer
      平成23年度電子情報通信学会信越支部大会予稿集
    • Year and Date
      2011-10-08
    • Related Report
      2011 Final Research Report
  • [Presentation] Srフェライト垂直磁化パターン化媒体の作製と特性2011

    • Author(s)
      桜井貴彦,劉小晰,森迫昭光
    • Organizer
      平成23年度電子情報通信学会信越支部大会予稿集
    • Year and Date
      2011-10-08
    • Related Report
      2011 Final Research Report
  • [Presentation] Preparations of Multiferroic BiFeO3 Thin Films and Layered BireO3/SrFe12O19 Film Structures through a Sputtering Method2011

    • Author(s)
      Yukiko Yasukawa
    • Organizer
      IEEE International Conference on Magnetics
    • Place of Presentation
      Taipei, Taiwan
    • Year and Date
      2011-04-26
    • Related Report
      2011 Annual Research Report
  • [Presentation] First study on the formation of strontium ferrite thin films on function alized multi-walled carbon nanotube2011

    • Author(s)
      Akimitsu Morisako
    • Organizer
      IEEE International Conference on Magnetics
    • Place of Presentation
      Taipei, Taiwan
    • Year and Date
      2011-04-26
    • Related Report
      2011 Annual Research Report
  • [Presentation] A simple method to miniaturizing high density SrM dot arrays2009

    • Author(s)
      Arkom Kaewrawang, Ali Ghasemi, Xiaoxi Liu, Akimitsu Morisako
    • Organizer
      第33回日本磁気学会学術講演概要集
    • Year and Date
      2009-09-14
    • Related Report
      2011 Final Research Report
  • [Presentation] Structural and magnetic properties of Sr-ferrite on Au nano-dots2009

    • Author(s)
      A.Kaewrawang, A.Ghasemi, X.Liu, A.Morisako
    • Organizer
      Technical Meeting on Magnetics, IEE Japan
    • Place of Presentation
      宇都宮
    • Year and Date
      2009-08-05
    • Related Report
      2009 Annual Research Report

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Published: 2009-04-01   Modified: 2016-04-21  

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