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New interface materials of half-metallic tunneling junction consisting of hetero-structures of non-half-metallic materials

Research Project

Project/Area Number 15K04670
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Research Field Crystal engineering
Research InstitutionKindai University

Principal Investigator

Nishikawa Hiroaki  近畿大学, 生物理工学部, 准教授 (50309267)

Co-Investigator(Kenkyū-buntansha) 岩田 展幸  日本大学, 理工学部, 准教授 (20328686)
Project Period (FY) 2015-04-01 – 2018-03-31
Project Status Completed (Fiscal Year 2017)
Budget Amount *help
¥5,070,000 (Direct Cost: ¥3,900,000、Indirect Cost: ¥1,170,000)
Fiscal Year 2017: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2016: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2015: ¥2,470,000 (Direct Cost: ¥1,900,000、Indirect Cost: ¥570,000)
Keywords界面電荷移動 / モット・ハバード型絶縁体 / 電荷移動型絶縁体 / ヘテロ界面 / 界面新物質 / 還元 / 電子ドープ / 2次元的磁性金属相
Outline of Final Research Achievements

Toward the discovery of half-metallic tunneling junctions which is expected to be applied to magnetic random access memory, i.e., an important candidate for the realization of next generation's universal memory devices, the new interface materials have been explored. In this study, the new interface materials mean the spontaneous half-metallic tunneling junctions consisting of non-half-metallic materials. At the hetero-interface between two perovskite type oxides, LaTiO3 (LTO) and LaFeO3 (LFO), electron is transferred from LTO to LFO. This electron transfer causes the metallic conductivity at the hetero-interface between LTO/LFO, i.e., both insulators. This result means that the "new interface materials" can be successfully discovered.

Report

(4 results)
  • 2017 Annual Research Report   Final Research Report ( PDF )
  • 2016 Research-status Report
  • 2015 Research-status Report
  • Research Products

    (7 results)

All 2017 2016 2015

All Presentation (7 results) (of which Int'l Joint Research: 4 results,  Invited: 3 results)

  • [Presentation] Electronic properties of charge transfer heterointerface between LaFeO3 and SrTiO32017

    • Author(s)
      Hiroaki Nishikawa
    • Organizer
      The 4th Japan-Korea International Symposium on Materials Science and Technology 2017
    • Related Report
      2017 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Electronic properties of electron transfer heterointerface between LaFeO3 and SrTiO32017

    • Author(s)
      Hiroaki Nishikawa
    • Organizer
      The 15th International Union of Materials Research, International Conference on Advanced Materials 2017
    • Related Report
      2017 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Controlling the electric conductivity at the interface between LaFeO3/SrTiO32017

    • Author(s)
      西川 博昭
    • Organizer
      第27回日本MRS年次大会
    • Related Report
      2017 Annual Research Report
  • [Presentation] モット絶縁体/電荷移動型絶縁体ヘテロ界面の新規電子物性2016

    • Author(s)
      西川 博昭
    • Organizer
      日本材料科学会関西・中国支部発足記念講演会
    • Place of Presentation
      近畿大学会館(大阪府大阪市中央区)
    • Year and Date
      2016-03-18
    • Related Report
      2015 Research-status Report
    • Invited
  • [Presentation] Electronic properties of LaFeO3/SrTiO3 heterointerface2016

    • Author(s)
      H. Nishikawa
    • Organizer
      Global Forum on Advanced Materials and Technologies for Sustainable Development 2016
    • Place of Presentation
      Toronto, Canada
    • Related Report
      2016 Research-status Report
    • Int'l Joint Research
  • [Presentation] Flexible Thin Film of Epitaxially Grown Functional Oxides2016

    • Author(s)
      H. Nishikawa
    • Organizer
      The 3rd Korea-Japan International Seminar on Materials Science and Engineering 2016
    • Place of Presentation
      Gyeongju, Korea
    • Related Report
      2016 Research-status Report
    • Int'l Joint Research / Invited
  • [Presentation] LaFeO3/SrTiO3ヘテロ界面の電荷移動に伴う新規電子物性探索2015

    • Author(s)
      西川 博昭、岩田 展幸
    • Organizer
      日本真空学会スパッタリングおよびプラズマプロセス技術部会 第12回技術交流会
    • Place of Presentation
      機械振興会館(東京都港区)
    • Year and Date
      2015-12-08
    • Related Report
      2015 Research-status Report

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Published: 2015-04-16   Modified: 2020-01-20  

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