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Functional exploration of thin-filmed quadruple perovskites

Research Project

Project/Area Number 20K15171
Research Category

Grant-in-Aid for Early-Career Scientists

Allocation TypeMulti-year Fund
Review Section Basic Section 29020:Thin film/surface and interfacial physical properties-related
Research InstitutionTokyo Institute of Technology

Principal Investigator

Shigematsu Kei  東京工業大学, 科学技術創成研究院, 助教 (40754578)

Project Period (FY) 2020-04-01 – 2022-03-31
Project Status Completed (Fiscal Year 2021)
Budget Amount *help
¥4,290,000 (Direct Cost: ¥3,300,000、Indirect Cost: ¥990,000)
Fiscal Year 2021: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2020: ¥2,990,000 (Direct Cost: ¥2,300,000、Indirect Cost: ¥690,000)
Keywords酸化物薄膜 / ペロブスカイト / エピタキシャル薄膜 / 遷移金属酸化物 / ペロブスカイト酸化物 / 磁気特性 / ペロブスカイト型酸化物
Outline of Research at the Start

本研究では、四重ペロブスカイト型酸化物と称される、多彩な物性を示すにもかかわらず高圧安定相であるため高品質な薄膜が得られていなかった物質群に着目し、異種物質接合や低次元性、ヘテロ接合など薄膜形態を生かした応用探索を行う。申請者のこれまでの研究から、パルスレーザー堆積法の特長を活用することで四重ペロブスカイトの薄膜化を可能にすることができる。この知見を駆使し、薄膜化によって可能となる格子歪の付与による新たな機能発現を狙う。

Outline of Final Research Achievements

In this study, we performed synthesis and characterization of LnCu3Mn4O12 (Ln: lanthanide) and LaCu3Mn4-xFexO12 thin films. We have clarified the origin for the lower magnetic transition temperature in the LnCu3Mn4O12 thin films, except for Ln=Ce, by magnetic measurement and electronic spectroscopy. In addition, we experimentally show that the magnetic anisotropy in LaCu3Mn4-xFexO12 thin films induced by lattice strain from substrate is preserved after Fe substitution. The magnetic interactions between constituent atoms in the films were experimentally investigated.

Academic Significance and Societal Importance of the Research Achievements

四重ペロブスカイト型酸化物は、構造歪みと原子組成の自由度の高さから、誘電性・電気磁気特性・超伝導といった多彩な物性を示す機能性材料群として長年研究されている。本研究における磁気特性・電子物性の結果は、四重ペロブスカイトの機能開拓のなかで、合成条件・磁気特性・電子物性の重要な知見となるものであり、今後の薄膜合成技術の進展とともに合成可能な材料が増える四重ペロブスカイト化合物の材料研究の後押しとなるものである。

Report

(3 results)
  • 2021 Annual Research Report   Final Research Report ( PDF )
  • 2020 Research-status Report
  • Research Products

    (5 results)

All 2022 2021 2020

All Journal Article (2 results) (of which Peer Reviewed: 2 results) Presentation (3 results) (of which Int'l Joint Research: 2 results,  Invited: 1 results)

  • [Journal Article] Stabilization of correlated ferroelectric and ferromagnetic domain structures in BiFe0.9Co0.1O3 films2021

    • Author(s)
      Katsumata Marin、Shigematsu Kei、Itoh Takuma、Shimizu Haruki、Shimizu Keisuke、Azuma Masaki
    • Journal Title

      Applied Physics Letters

      Volume: 119 Issue: 13 Pages: 132901-132901

    • DOI

      10.1063/5.0061508

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Stable electric polarization switching accompanied by magnetization reversal in B-site-substituted multiferroic BiFe0.9Co0.1O3 thin films2020

    • Author(s)
      Shigematsu Kei、Shimizu Haruki、Katsumata Marin、Shimizu Keisuke、Yamamoto Hajime、Mibu Ko、Azuma Masaki
    • Journal Title

      Applied Physics Express

      Volume: 13 Issue: 7 Pages: 071001-071001

    • DOI

      10.35848/1882-0786/ab98b2

    • Related Report
      2020 Research-status Report
    • Peer Reviewed
  • [Presentation] Water printingによる マルチフェロイックBiFe0.9Co0.1O3薄膜 の面外分極反転と強誘電性・強磁性 ドメイン制御2022

    • Author(s)
      伊藤 拓真, 重松 圭, 東 正樹
    • Organizer
      第69回応用物理学会春季学術講演会
    • Related Report
      2021 Annual Research Report
  • [Presentation] Direct Observation of Magnetization Reversal by Polarization Switching in Multiferroic Cobalt-Substituted Bismuth Ferrite Thin Film2021

    • Author(s)
      Kei Shigematsu, Masaki Azuma
    • Organizer
      International Congresson Ceramics (ICC8)
    • Related Report
      2021 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Direct observation of magnetization reversal by polarization switching in multiferroic Co-substituted BiFeO3 thin film2021

    • Author(s)
      Kei Shigematsu,1,2 Keisuke Shimizu,1 Ryo Kawabe,1 Hajime Hojo,3Haruki Shimizu,1 Ko Mibu,4 Marin Katsumata,1 Masaki Azuma1,2
    • Organizer
      IEEE ISAF-ISIF-PFM 2021
    • Related Report
      2021 Annual Research Report
    • Int'l Joint Research

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Published: 2020-04-28   Modified: 2023-01-30  

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