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カチオン秩序配列新規遷移金属酸化物の低温合成と構造物性評価

Research Project

Project/Area Number 17F17039
Research Category

Grant-in-Aid for JSPS Fellows

Allocation TypeSingle-year Grants
Section外国
Research Field Inorganic chemistry
Research InstitutionKyoto University

Principal Investigator

島川 祐一  京都大学, 化学研究所, 教授 (20372550)

Co-Investigator(Kenkyū-buntansha) AMANO PATINO MIDORI  京都大学, 化学研究所, 外国人特別研究員
Project Period (FY) 2017-04-26 – 2019-03-31
Project Status Completed (Fiscal Year 2018)
Budget Amount *help
¥2,300,000 (Direct Cost: ¥2,300,000)
Fiscal Year 2018: ¥1,100,000 (Direct Cost: ¥1,100,000)
Fiscal Year 2017: ¥1,200,000 (Direct Cost: ¥1,200,000)
Keywords遷移金属酸化物 / 高圧合成 / 磁気構造 / 秩序配列 / 構造物性
Outline of Annual Research Achievements

Aサイトに磁性Feイオン、Bサイトに非磁性Tiイオンを含んだ新規四重ペロブスカイト構造酸化物CaFe3Ti4O12を高圧法を用いて合成することに成功し、この物質が磁場下で興味深い磁気転移を示すことを見出した。この物質では、AサイトにあるFe2+スピン間での磁気相互作用の競合によりフラストレーションが生じ、その大きなモーメントにも関わらず、転移温度が非常に低い反強磁性が現れる。さらに、磁場中ではこのAサイトスピンが強磁性的な配列へと変化するという興味深い現象が見出された。
The material CaFe3Ti4O12 with unusual square-planar Fe2+ centers at the A sites was successfully synthesized using high-temperature high-pressure techniques, and the magnetic properties were characterized for the first time. Collection of neutron powder diffraction data under high magnetic fields at Rutherford Appleton Laboratory, UK, allowed the observation of non-trivial magnetic ordering for CaFe3Ti4O12. These data along with additional magnetic-property characterization techniques such as heat capacity and Mossbauer spectroscopy were combined to reveal unprecedented insights into the unusual properties of these A'A3B4O12 materials.

Research Progress Status

平成30年度が最終年度であるため、記入しない。

Strategy for Future Research Activity

平成30年度が最終年度であるため、記入しない。

Report

(2 results)
  • 2018 Annual Research Report
  • 2017 Annual Research Report
  • Research Products

    (9 results)

All 2019 2018 2017 Other

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

  • [Int'l Joint Research] University of Edinburgh/ISIS Neutron Facility(英国)

    • Related Report
      2018 Annual Research Report
  • [Int'l Joint Research] University of Edinburgh/ISIS Neutron Facility(英国)

    • Related Report
      2017 Annual Research Report
  • [Journal Article] Suppression of Sequential Charge Transitions in Ca0.5Bi0.5FeO3 via B-Site Cobalt Substitution2018

    • Author(s)
      F. D. Romero, P. Xiong, M. Amano Patino, T. Saito, P. Kayser, J. P. Attfield, and Y. Shimakawa
    • Journal Title

      Chem. Mater.

      Volume: 30 Issue: 15 Pages: 5493-5499

    • DOI

      10.1021/acs.chemmater.8b02524

    • Related Report
      2018 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Hexagonal Perovskite Ba4Fe3NiO12 Containing Tetravalent Fe and Ni Ions2018

    • Author(s)
      Z. Tan, T. Saito, F. D. Romero, M. Amano Patino, M. Goto, W.-T. Chen, Y.-C. Chuang, H.-S. Sheu, and Y. Shimakawa
    • Journal Title

      Inorg. Chem.

      Volume: 57 Issue: 16 Pages: 10410-10415

    • DOI

      10.1021/acs.inorgchem.8b01618

    • Related Report
      2018 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Presentation] Magnetic order of A'-site iron spins in CaFe3Ti4O12 and field-induced switching2019

    • Author(s)
      Midori Amano Patino、Fabio Denis Romero、Masato Goto、Takashi Saito、Yuichi Shimakawa
    • Organizer
      日本化学会 第99春季年会
    • Related Report
      2018 Annual Research Report
  • [Presentation] Field-Induced Magnetic Order Switching of A'-site Iron Spins in CaFe3Ti4O122018

    • Author(s)
      M. Amano Patino, F. Denis Romero, M. Goto, T. Saito, and Y. Shimakawa
    • Organizer
      2018 MRS Fall meeting
    • Related Report
      2018 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Structural and Magnetic Properties of Quadruple Perovskites Containing A-site Iron2017

    • Author(s)
      M. Amano
    • Organizer
      Core-to-Core Workshop "From Basic to Application of Materials"
    • Related Report
      2017 Annual Research Report
    • Int'l Joint Research
  • [Remarks] 京都大学化学研究所、先端無機個体化学(島川)研究室

    • URL

      http://www.scl.kyoto-u.ac.jp/~shimakgr/index.html

    • Related Report
      2018 Annual Research Report 2017 Annual Research Report
  • [Remarks] Shimakawa group, ICR, Kyoto Univ

    • URL

      http://www.scl.kyoto-u.ac.jp/~shimakgr/indexE.html

    • Related Report
      2018 Annual Research Report 2017 Annual Research Report

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Published: 2017-05-25   Modified: 2024-03-26  

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