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Fabrication of periodic arrangement of ferromagnetic nanoparticles as a potential application to future high density magnetic strage media

Research Project

Project/Area Number 13555189
Research Category

Grant-in-Aid for Scientific Research (B)

Allocation TypeSingle-year Grants
Section展開研究
Research Field Structural/Functional materials
Research InstitutionOsaka University

Principal Investigator

HIROTSU Yoshihiko  Osaka University, The Institute of Scientific & Industrial Research, Professor, 産業科学研究所, 教授 (70016525)

Co-Investigator(Kenkyū-buntansha) SUDO Koichi  Osaka University, The Institute of Scientific & Industrial Research, Research Associate, 産業科学研究所, 助手 (90314426)
SATO Kazuhisa  Osaka University, The Institute of Scientific & Industrial Research, Research Associate, 産業科学研究所, 助手 (70314424)
IWASAKI Hiroshi  Osaka University, The Institute of Scientific & Industrial Research, Professor, 産業科学研究科, 教授 (00029901)
SHINOHARA Tadashi  Hitachi Metals, Ltd., Director, 技術本部・副センター長
ISHIMARU Manabu  Osaka University, The Institute of Scientific & Industrial Research, Associate Professor, 産業科学研究所, 助教授 (00264086)
Project Period (FY) 2001 – 2002
Project Status Completed (Fiscal Year 2002)
Budget Amount *help
¥13,900,000 (Direct Cost: ¥13,900,000)
Fiscal Year 2002: ¥4,700,000 (Direct Cost: ¥4,700,000)
Fiscal Year 2001: ¥9,200,000 (Direct Cost: ¥9,200,000)
Keywordssubstrate with atomic step / magnetic nanoparticles / periodic arrangement / Iron-Platinum / hard magnetic property / L1_0 super structure / electron microscope / Lethography using Polystyrene Sphere / 粒子規則配列 / FePd / 基板原子ステップ / 高分解能電子顕微鏡 / エピタキシャル成長 / ナノ粒子 / L1o型規則合金 / 強磁性体
Research Abstract

In this study, we have examined a fabrication of periodically arranged ferromagnetic nanoprticles by using atomic, steps and lithography with polystyrene spheres for potential applications to future high density magnetic storage media. As a result, periodic arrangement of 4-nm-sized Feet nanoparticles was successfully produced by electron beam deposition onto an off-angle NaCl (001) substrate. Fabricated Feet nanoparticles were single crystalline with tetragonal L1o ordered structure just after the deposition at 673K.This fabrication temperature is more than 100K lower than that of previous reports. Magnetic coercivity decreased with decreasing the particle size of Feet, which can be explained by the thermal fluctuation of magnetic moments of very small Feet nanoparticles. Then we prepared Si(113) and SrTiO3(001) single crystal substrates with fine atomic steps. Deposition of noble metal elements like Au, Ag, Pd, Pt onto these step substrates resulted in formation of fine metal nanoparticles with high density, but periodic arrangement of nanoparticles along the step edges were not achieved in spite of the existence of periodic atomic steps on each substrate surfaces. Lithography technique ~ using periodic arrangement of polystyrene spheres lead to formation of Au and Pd nano-dot periodic arrays on MgO substrates. Our next step is to control the distribution of polystyrene spheres on the substrate

Report

(3 results)
  • 2002 Annual Research Report   Final Research Report Summary
  • 2001 Annual Research Report
  • Research Products

    (35 results)

All Other

All Publications (35 results)

  • [Publications] K.Sato, T.Kajiwara, M.Fujiyoshi, M.Ishimaru, Y.Hirotsu, T.Shinohara: "Effects of surface step and substrate temperature on nanostructure of L1_0-FePt nanoparticles"Journal of Applied Physics. 93. 7414-7416 (2003)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2002 Final Research Report Summary
  • [Publications] K.Sato, M.Fujiyoshi, M.Ishimaru, Y.Hirotsu: "Effects of additive element and particle size on the atomic ordering temperature of L1_0-FePt nanoperticles"Scripta Materialia. 48. 921-927 (2003)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2002 Final Research Report Summary
  • [Publications] K.Sato, Y.Hirotsu: "Structure and magnetic property changes of epitaxially grown L1_0-FePd isolated nanoparticles on annealing"Journal of Applied Physics. 93. 6291-6298 (2003)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2002 Final Research Report Summary
  • [Publications] K.Sato, Y.Hirotsu: "Long-range order parameter of oriented L1_0-FePt nanoparticles determined by electron diffraction"Materials Transactions. 44. 1518-1522 (2003)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2002 Final Research Report Summary
  • [Publications] K.Sato, B.Bian, Y.Hirotsu: "Fabrication of oriented L1_0-FePt and FePd nanoparticles with large coercivity"Journal of Applied Physics. 91. 8516-8518 (2002)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2002 Final Research Report Summary
  • [Publications] K.Sato, B.Bian, T.Hanada, Y.Hirotsu: "Oriented L1_0-FePt nanoparticles and their magnetic properties"Scripta Materialia. 44. 1389-1393 (2001)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2002 Final Research Report Summary
  • [Publications] K.Sato, B.Bian, Y.Hirotsu: "L1_0 -type ordered phase formation in Fe-Au nanoparticles"Japanese Journal of Applied Physics. 41. L1-L3 (2002)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2002 Final Research Report Summary
  • [Publications] Y.Hirotsu, K.Sato, B.Bian: "Oriented Hard Magnetic L1_0-FePt and FePd Nanoparticles"Proceedings of the 15^<th> International Congress on Electron Microscopy. 285-286 (2002)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2002 Final Research Report Summary
  • [Publications] K.Sato, Y.Hirotsu: "Characterization of L1_0 type FeAu nanoparticles"Proceedings of the 15^<th> International Congress on Electron Microscopy. 413-414 (2002)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2002 Final Research Report Summary
  • [Publications] 佐藤和久, 弘津禎彦: "方位配向FePtナノ粒子2次元分散膜の構造と磁気的性質"日本金属学会会報まてりあ. 40. 172-177 (2001)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2002 Final Research Report Summary
  • [Publications] 佐藤和久, 弘津禎彦: "方位配向FePd規則合金ナノ粒子"日本金属学会会報まてりあ. 40. 1020 (2001)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2002 Final Research Report Summary
  • [Publications] K.Sato, T.Kajiwara, M.Fujiyoshi, M.Ishimaru, Y.Hirotsu, T.Shinohara: "Effects of surface step and substrate temperature on nanostructure of L1_0-FePt nanopaticles"Journal of Applied Physics. 93(10). 7414-7416 (2003)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2002 Final Research Report Summary
  • [Publications] K.Sato, M.Fujiyoshi, M.Ishimaru, Y.Hirotsu: "Effects of additive element and particle size on atomic ordering temperature of L1_0-FePt nanoparticles"Scripts Materialia. 48(7). 921-927 (2003)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2002 Final Research Report Summary
  • [Publications] K.Sato, Y.Hirotsu: "Structure and magnetic property changes of epitaxially grown L1o-FePd isolated nanoparticles on annealing"Journal of Applied Physics. 93(10). 6291-6298 (2003)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2002 Final Research Report Summary
  • [Publications] K.Sato, Y.Hirotsu: "Long-range order parameter of oriented L1o-FePt nanoparticles determined by electron diffraction"Materials Transactions. 44(8). 1518-1522 (2003)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2002 Final Research Report Summary
  • [Publications] K.Sato, B.Bias, Y.Hirotsu: "Fabrication of oriented L1_0-FePt and FePd nanoparticles with large coercivity"Journal of Applied Physics,. 91(10). 8516-8518 (2002)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2002 Final Research Report Summary
  • [Publications] K.Sato, B.Bian, Y.Hirotsu: "L1_0-type ordered phase formation in Fe-Au nanoparticles"Japanese Journal of Applied Physics. 41(Part2, 1A/B). L1-L3 (2002)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2002 Final Research Report Summary
  • [Publications] K.Sato, B.Bian, T.Hanada, Y.Hirotsu: "Oriented L10-FePt nanoparticles and their magnetic properties"Scripts Materialia. 44(8-9). 1389-1393 (2001)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2002 Final Research Report Summary
  • [Publications] Y.Hirotsu, K.Sato, B.Bian: "Oriented hard magnetic L10-FePt and Feed nanoparticles"Proceedings of the 15^<th> International Congress on Electron Microscopy (ICEM15), Durban, South Africa. 285-286 (2002)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2002 Final Research Report Summary
  • [Publications] K.Sato, Y.Hirotsu: "Characterization of L1_0 type FeAu nanoparticles"Proceedings of the 15^<th> International Congress on Electron Microscopy (ICEM15), Durban, South Africa. 413-414 (2002)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2002 Final Research Report Summary
  • [Publications] 佐藤和久, 下波, 弘津禎彦: "方位配向FePtナノ粒子2次元分散膜の構造と磁気的性質"日本金属学会会報まてりあ. 40巻(2号). 172-177 (2001)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2002 Final Research Report Summary
  • [Publications] 佐藤和久, 弘津禎彦: "方位配向FePd規則合金ナノ粒子"日本金属学会会報まてりあ. 40巻(13号). 1020 (2001)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2002 Final Research Report Summary
  • [Publications] K.Sato, Y.Hirotsu: "Structure and magnetic property change of epitaxially grown L1o-FePd nanoparticles on annealing"Journal of Applied Physics. 93(11)(in press). (2003)

    • Related Report
      2002 Annual Research Report
  • [Publications] K.Sato, T.Kajiwara, M.Fujiyoshi, M.Ishimaru, Y.Hirotsu, T.Shinohara: "Effects of surface step and substrate temperature on nanostructure of L1o-FePt nanoparticles"Journal of Applied Physics. 93(10)(in press). (2003)

    • Related Report
      2002 Annual Research Report
  • [Publications] K.Sato, M.Fujiyoshi, M.Ishimaru, Y.Hirotsu: "Effects of additive elements and particle size on the atomic ordering temperature of L1o-FePt nanoparticles"Scripta Materialia. 44(8/9). 921-927 (2003)

    • Related Report
      2002 Annual Research Report
  • [Publications] K.Sato, B.Bian, Y.Hirotsu: "Fabrication of oriented L1o-FePt and FePd nanoparticles with large coercivity"Journal of Applied Physics. 91(10). 8516-8518 (2002)

    • Related Report
      2002 Annual Research Report
  • [Publications] K.Sato, B.Bian, Y.Hirotsu: "L1o type ordered phase formation in Fe-Au nanoparticles"Japanese Journal of Applied Physics. 41(1A/B). L1-L3 (2002)

    • Related Report
      2002 Annual Research Report
  • [Publications] Y.Hirotsu, K.Sato, B.Bian: "Oriented hard magnetic L1_0-FePt and FePd nanoparticles"Proceedings of the 15^<th> international Congress on Electron Microscopy (ICEM15, Durban, South Africa). 1. 285-286 (2002)

    • Related Report
      2002 Annual Research Report
  • [Publications] K.Sato, B.Bian, Y.Hirotsu: "L1_0 Type Ordered Phase Formation in Fe-Au Nanoparticles"Jpn. J. Appl. Phys.. 41(1A/B). L1-L3 (2002)

    • Related Report
      2001 Annual Research Report
  • [Publications] K.Sato, B.Bian, T.Hanada, Y.Hirotsu: "Oriented L1_0-FePt nanoparticles and their magnetic proeprties"Scripta Mater.. 44(8/9). 1389-1393 (2001)

    • Related Report
      2001 Annual Research Report
  • [Publications] K.Sato, B.Bian, Y.Hirotsu: "Hard magnetic properties of oriented FePd ordered alloy nanoparticles with 2D dispersion"Proc. 4^<th> Seminar on Core University Program between Japan and Korea. 181-184 (2001)

    • Related Report
      2001 Annual Research Report
  • [Publications] 佐藤和久, 弘津禎彦: "方位配向FePd規則合金ナノ粒子"日本金属学会会報まてりあ. 40(12). 1020 (2001)

    • Related Report
      2001 Annual Research Report
  • [Publications] 佐藤和久, 卞波, 弘津禎彦: "方位配向FePtナノ粒子2次元分散膜の構造と磁気的性質"日本金属学会会報まてりあ. 40(2). 172-177 (2001)

    • Related Report
      2001 Annual Research Report
  • [Publications] 佐藤和久, 弘津禎彦: "強磁性規則合金ナノ粒子2次元分散膜の創製と機能"マテリアルインテグレーション. 17(1). 13-17 (2001)

    • Related Report
      2001 Annual Research Report
  • [Publications] 佐藤和久, 卞波, 弘津禎彦: "電子顕微鏡の実践と応用写真集(分担執筆)"方位配向FePtナノ粒子2次元分散膜の構造と磁気的性質. 254 (2002)

    • Related Report
      2001 Annual Research Report

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Published: 2001-04-01   Modified: 2016-04-21  

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