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Enhancing thermal stability of a"-Fe16N2

Research Project

Project/Area Number 25620186
Research Category

Grant-in-Aid for Challenging Exploratory Research

Allocation TypeMulti-year Fund
Research Field Inorganic industrial materials
Research InstitutionKyoto University

Principal Investigator

YAMAMOTO Shinpei  京都大学, 物質-細胞統合システム拠点, 助教 (20362395)

Co-Investigator(Kenkyū-buntansha) MCNAMEE Cathy  信州大学, 繊維学部, 准教授 (40504551)
Project Period (FY) 2013-04-01 – 2015-03-31
Project Status Completed (Fiscal Year 2014)
Budget Amount *help
¥4,030,000 (Direct Cost: ¥3,100,000、Indirect Cost: ¥930,000)
Fiscal Year 2014: ¥1,950,000 (Direct Cost: ¥1,500,000、Indirect Cost: ¥450,000)
Fiscal Year 2013: ¥2,080,000 (Direct Cost: ¥1,600,000、Indirect Cost: ¥480,000)
Keywordsiron nitride / thermal stability / 窒化鉄 / 熱安定性
Outline of Final Research Achievements

Enhancement of thermal stability of a”-Fe16N2 was studied by doping a third element which interacts strongly with nitrogen atoms. The doped a”-Fe16N2 samples were prepared in two steps; oxide-to-metal reduction in a H2 stream and subsequent metal-to-nitride conversion using an NH3 stream. We have succeeded in finding conditions to produce high purity gallium-doped a”-Fe16N2 samples (purities > 90%). Thermal stability of thus-formed samples was studied and found to be similar to that of non-doped samples (a”-Fe16N2).

Report

(3 results)
  • 2014 Annual Research Report   Final Research Report ( PDF )
  • 2013 Research-status Report
  • Research Products

    (7 results)

All 2014 2013

All Journal Article (3 results) (of which Peer Reviewed: 3 results) Presentation (4 results)

  • [Journal Article] Orbital magnetic moment and coercivity of SiO2-coated FePt nanoparticles studied by x-ray magnetic circular dichroism2014

    • Author(s)
      Y. Takahashi, T. Kadono, V. R. Singh, V. K. Verma, K. Ishigami, G. Shibata, T. Harano, A. Fujimori, Y. Takeda, T. Okane, Y. Saito, H. Yamagami, S. Yamamoto, and M. Takano
    • Journal Title

      Physical Review B

      Volume: 90 Issue: 2

    • DOI

      10.1103/physrevb.90.024423

    • Related Report
      2014 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Stability of α”-Fe16N2 in hydrogenous atmospheres2014

    • Author(s)
      S. Yamamoto, R. Gallage, S. Isoda, Y. Ogata, Y. Kusano, N. Kobayashi, T. Ogawa, N. Hayashi, M. Takahashi, M. Takano
    • Journal Title

      Chem. Comm.

      Volume: 50 Issue: 53 Pages: 7040-7043

    • DOI

      10.1039/c4cc01839g

    • NAID

      120005623276

    • Related Report
      2014 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Quantitative understanding of thermal stability of α"-Fe_<16>N_22013

    • Author(s)
      S. Yamamoto, R. Gallage, Y. Ogata, Y. Kusano, N. Kobayashi, T. Ogawa, N. Hayashi, K. Kohara, M. Takahashi, and M. Takano
    • Journal Title

      Chem. Commun

      Volume: 49(70) Issue: 70 Pages: 7708-7710

    • DOI

      10.1039/c3cc43590c

    • Related Report
      2013 Research-status Report
    • Peer Reviewed
  • [Presentation] Quantitative understanding of thermal stability of a”-Fe16N22014

    • Author(s)
      Shinpei Yamamoto
    • Organizer
      59th Annual Magnetic and Magnetic Materials Conference
    • Place of Presentation
      ホノルル
    • Year and Date
      2014-11-03 – 2014-11-07
    • Related Report
      2014 Annual Research Report
  • [Presentation] 強磁性窒化鉄a’’-Fe16N2の水素ガス雰囲気下における安定性2014

    • Author(s)
      2.山本真平
    • Organizer
      粉体粉末冶金協会H26年度秋季大会
    • Place of Presentation
      大阪大学コンベンションセンター
    • Year and Date
      2014-10-29 – 2014-10-31
    • Related Report
      2014 Annual Research Report
  • [Presentation] 水素ガス雰囲気下における&#61537;”-Fe16N2の安定性2014

    • Author(s)
      山本真平
    • Organizer
      日本磁気学会第38回学術講演会
    • Place of Presentation
      慶應義塾大学 日吉キャンパス
    • Year and Date
      2014-09-02 – 2014-09-05
    • Related Report
      2014 Annual Research Report
  • [Presentation] 強磁性窒化鉄a’’-Fe16N2の熱安定性に関する研究2013

    • Author(s)
      山本真平, 高野幹夫, Gallage Ruwan, 小林斉也, 緒方安伸, 小川智之, 高橋研
    • Organizer
      粉体粉末冶金協会平成25年度秋季大会
    • Place of Presentation
      名古屋
    • Related Report
      2013 Research-status Report

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Published: 2014-07-25   Modified: 2019-07-29  

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