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2005 Fiscal Year Final Research Report Summary

Hydrothermal Synthesis of Magnetic Single Crystals in Thermally and Chemically Stable Reaction Fields of One-Dimensional Nano Space

Research Project

Project/Area Number 15310068
Research Category

Grant-in-Aid for Scientific Research (B)

Allocation TypeSingle-year Grants
Section一般
Research Field Nanostructural science
Research InstitutionTohoku University

Principal Investigator

KYOTANI Takashi  Tohoku University, Institute of Multidisciplinary Research for Advanced Materials, Professor, 多元物質科学研究所, 教授 (90153238)

Co-Investigator(Kenkyū-buntansha) ORIKASA Hironori  Tohoku University, Institute of Multidisciplinary Research for Advanced Materials, Research Associate, 多元物質科学研究所, 助手 (90375163)
Project Period (FY) 2003 – 2005
Keywordscarbon nanotube / magnetic material / nanowire / high-density magnetic recoding media / hydrothermal synthesis / electroplating
Research Abstract

By chemical vapor deposition of propylene over an anodic aluminum oxide (AAO) film, not only the outer surface but also the inner surface of AAO nanochannels can be fully covered with carbon. The carbon-coated nanochannels can be used as a template in hydrothermal treatment that requires sever alkaline conditions. In the first year we reported our attempt at the synthesis of single crystal nanorods by hydrothermal reaction of nickel compounds in the cavity of the carbon-coated nanochannels and demonstrated that hydrothermal synthesis method can be applied to template-based preparation of nano-sized materials. However, we had some difficulty to insert ferromagnetic metal into the nanochannels using this hydrothermal method. Then we found that ferromagnetic metal (Permalloy) was electrochemically deposited on the carbon-coated nanochannels in the AAO layer in an electroplating bath. Moreover, not only soft magnetic alloy such as Permalloy but also hard magnetic materials such as nickel metal were able to be deposited.
In the above electroplating method, Permalloy deposition had never been observed inside the nanotubes, but only on the external surface, when we used the carbon-coated AAO film as a cathode for the electroplating of Permalloy. We then removed only the carbon deposited on the external surface of the AAO film with leaving carbon inside the channels and found metal deposition in the cavity of the nanotubes. This is because electroplating into nano space surrounded by electro-conductive material (carbon) is very difficult. However, for the application of high-density magnetic recoding media, such carbon layer on the external surface should be kept, because the carbon can play a role of a protective and lubricated layer. We thus make every effort to electro-chemically deposit Permalloy in the carbon-coated nanochannels in the AAO and finally have succeeded in such deposition by precisely controlling the electroplating conditions.

  • Research Products

    (16 results)

All 2006 2005 2004 Other

All Journal Article (10 results) Book (4 results) Patent(Industrial Property Rights) (2 results)

  • [Journal Article] RF Noise Suppression Using Carbon-Coated Permalloy Nanorod Arrays2005

    • Author(s)
      Ki Hyeon Kim
    • Journal Title

      IEEE Trans. Magn 41

      Pages: 4075-4077

    • Description
      「研究成果報告書概要(和文)」より
  • [Journal Article] Application of image plate for structural studies of carbon nanotubes by high-energy X-ray diffraction2005

    • Author(s)
      L.Hawelek
    • Journal Title

      J. Alloys Compd. 401

      Pages: 51-54

    • Description
      「研究成果報告書概要(和文)」より
  • [Journal Article] Modelling studies of carbon nanotubes-Comparison of simulations and X-ray diffraction data2005

    • Author(s)
      J.Koloczek
    • Journal Title

      J. Alloys Compd. 401

      Pages: 46-50

    • Description
      「研究成果報告書概要(和文)」より
  • [Journal Article] Structural studies of oriented carbon nanotubes in alumina channels using high energy x-ray diffraction2005

    • Author(s)
      Andrzej Burian
    • Journal Title

      Carbon 43

      Pages: 2723-2729

    • Description
      「研究成果報告書概要(和文)」より
  • [Journal Article] RF Noise Suppression Using Carbon-Coated Permalloy Nanorod Arrays2005

    • Author(s)
      Ki Hyeon Kim
    • Journal Title

      IEEE Trans.Magn. 41

      Pages: 4075-4077

    • Description
      「研究成果報告書概要(欧文)」より
  • [Journal Article] Application of Image Plate for Structural Studies of Carbon Nanotubes by High-energy X-ray Diffraction2005

    • Author(s)
      L.Hawelek
    • Journal Title

      J.Alloys Compd. 401

      Pages: 51-54

    • Description
      「研究成果報告書概要(欧文)」より
  • [Journal Article] Modelling Studies of Carbon Nanotubes-Comparison of Simulations and X-ray Diffraction Data2005

    • Author(s)
      J.Koloczek
    • Journal Title

      J.Alloys Compd. 401

      Pages: 46-50

    • Description
      「研究成果報告書概要(欧文)」より
  • [Journal Article] Structural Studies of Oriented Carbon Nanotubes in Alumina Channels Using High Energy X-ray Diffraction2005

    • Author(s)
      Andrzej Burian
    • Journal Title

      Carbon 43

      Pages: 2723-2729

    • Description
      「研究成果報告書概要(欧文)」より
  • [Journal Article] Structural studies of carbon nanotubes obtained by template deposition using high-energy X-ray scattering

    • Author(s)
      J.Koloczek
    • Journal Title

      Diamond Relat. Mater. (印刷中)

    • Description
      「研究成果報告書概要(和文)」より
  • [Journal Article] Structural Studies of Carbon Nanotubes Obtained by Template Deposition Using High-energy X-ray Scattering

    • Author(s)
      J.Koloczek
    • Journal Title

      Diamond Relat.Mater. (in Press)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Book] ナノマテリアルハンドブック(国武豊喜監修)2005

    • Author(s)
      京谷 隆
    • Total Pages
      6
    • Publisher
      株式会社エヌ・ティー・エス
    • Description
      「研究成果報告書概要(和文)」より
  • [Book] Handbook of Nano-Materials2005

    • Author(s)
      T.Kyotani, (ed.T.Kunitake)
    • Total Pages
      482-487
    • Publisher
      NTS Inc.
    • Description
      「研究成果報告書概要(欧文)」より
  • [Book] ナノファイバーテクノロジーを用いた高度産業発掘戦略(本宮達也監修)2004

    • Author(s)
      京谷 隆
    • Total Pages
      13
    • Publisher
      シーエムシー出版
    • Description
      「研究成果報告書概要(和文)」より
  • [Book] Nano Fiber Technology is Developing Advanced Industry2004

    • Author(s)
      T.Kyotani, (ed.T.Hongu)
    • Total Pages
      91-102
    • Publisher
      CMC Publishing Co., Ltd.
    • Description
      「研究成果報告書概要(欧文)」より
  • [Patent(Industrial Property Rights)] カーボンナノチューブ連結体及びその製造方法、並びに、標的検出素子及び標的検出方法2006

    • Inventor(s)
      伊藤健一, 京谷 隆, 益田秀樹
    • Industrial Property Rights Holder
      東北大学, 富士通, 神奈川科学技術アカデミー
    • Industrial Property Number
      特願 2006-100656
    • Filing Date
      2006-03-31
    • Description
      「研究成果報告書概要(和文)」より
  • [Patent(Industrial Property Rights)] カーボンナノチューブ複合材料及びその製造方法、並びに磁性材料及びその製造方法2004

    • Inventor(s)
      京谷 隆, 小川和則, 伊藤健一, 菊池英幸, 中尾 宏, 熊井次男
    • Industrial Property Rights Holder
      東北大学, 富士通
    • Industrial Property Number
      特願 2004-145528
    • Filing Date
      2004-05-14
    • Description
      「研究成果報告書概要(和文)」より

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Published: 2007-12-13  

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