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Cation distribution in spinel iron oxides by resonant X-ray scattering

Research Project

Project/Area Number 15H03747
Research Category

Grant-in-Aid for Scientific Research (B)

Allocation TypeSingle-year Grants
Section一般
Research Field Petrology/Mineralogy/Economic geology
Research InstitutionTohoku University (2016-2017)
Tokyo Institute of Technology (2015)

Principal Investigator

Okube Maki  東北大学, 金属材料研究所, 准教授 (10397060)

Co-Investigator(Renkei-kenkyūsha) Sasaki Satoshi  東京工業大学, 科学技術創成研究院, 名誉教授 (10162364)
Project Period (FY) 2015-04-01 – 2018-03-31
Project Status Completed (Fiscal Year 2017)
Budget Amount *help
¥10,920,000 (Direct Cost: ¥8,400,000、Indirect Cost: ¥2,520,000)
Fiscal Year 2017: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Fiscal Year 2016: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2015: ¥8,580,000 (Direct Cost: ¥6,600,000、Indirect Cost: ¥1,980,000)
KeywordsX線異常分散効果 / 共鳴散乱 / スピネル構造 / 陽イオン分布 / 電子密度分布
Outline of Final Research Achievements

Understanding of cation distribution in spinel-type oxides is essential since their magnetic properties highly depend on the cation distribution. The site occupancies of cations in spinel oxides were analyzed using X-rays with energies near absorption edges. The resonant scattering experiments allowed us to distinguish cations that have close number of electrons or the same cations with different valence. Spinel structure has two different crystallographyc sites; tetrahedral site and Octahedral sites. The site occupancies of Mn and Fe for MnxFe3-xO4, Fe2+, Fe3+ and Ti4+ for TixFe3-xO4 was distinctively analyzed. X-ray resonant magnetic scattering experiments with circularly polarized X-ray were also carried out to develop site-selective magnetic moment analysis and theoretical expression for asymmetric ratio was discussed.

Report

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

    (24 results)

All 2018 2017 2016 2015

All Journal Article (8 results) (of which Int'l Joint Research: 1 results,  Peer Reviewed: 8 results,  Acknowledgement Compliant: 2 results,  Open Access: 3 results) Presentation (16 results) (of which Int'l Joint Research: 7 results)

  • [Journal Article] Resonant and non-resonant magnetic scatterings with circularly polarized X-rays: magnetic scattering factor and electron density of gadolinium iron garnet2017

    • Author(s)
      Yo Sasaki, Maki Okube and Satoshi Sasaki
    • Journal Title

      Acta Crystallographica A

      Volume: 73 Issue: 3 Pages: 257-270

    • DOI

      10.1107/s2053273317003588

    • Related Report
      2017 Annual Research Report
    • Peer Reviewed / Acknowledgement Compliant
  • [Journal Article] CRYSTAL STRUCTURES OF POTASSIUM TETRA-SILICIC FLUORO-MICAS2017

    • Author(s)
      Ritsuro Miyawaki,Koichi Momma,Maki Okube,Akira Yoshiasa,Shun-Ichi Ohta
    • Journal Title

      Clay Science

      Volume: 21 Issue: 3 Pages: 41-54

    • DOI

      10.11362/jcssjclayscience.21.3_41

    • NAID

      130006120062

    • ISSN
      0009-8574, 2186-3555
    • Related Report
      2017 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Structure of Single-Crystal Rutile (TiO2) Prepared by High-Temperature Ultracentrifugation2017

    • Author(s)
      Mashimo, T; Bagum, R; Ogata, Y; Tokuda, M; Okube, M; Sugiyama, K; Kinemuchi, Y; Isobe, H; Yoshiasa, A
    • Journal Title

      CRYSTAL GROWTH & DESIGN

      Volume: 17 Issue: 4 Pages: 1460-1464

    • DOI

      10.1021/acs.cgd.6b01818

    • Related Report
      2017 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Cation distribution and magnetic structure of M-type BaTiMnFe10O19 examined by synchrotron X-ray and neutron studies2016

    • Author(s)
      Maki Okube, Jumpei Yoshizaki, Takeshi Toyoda and Satoshi Sasaki
    • Journal Title

      J. Applid Crystallography

      Volume: 49 Issue: 5 Pages: 1433-1442

    • DOI

      10.1107/s1600576716010591

    • Related Report
      2016 Annual Research Report
    • Peer Reviewed / Acknowledgement Compliant
  • [Journal Article] High-temperature single-crystal X-ray diffraction study of tetragonal and cubic perovskite-type PbTiO3 phases2016

    • Author(s)
      Yoshiasa Akira, Nakatani Tomotaka, Nakatsuka Akihiko, Okube Maki, Sugiyama Kazumasa, Mashimo Tsutomu
    • Journal Title

      ACTA CRYSTALLOGRAPHICA SECTION B-STRUCTURAL SCIENCE CRYSTAL ENGINEERING AND MATERIALS

      Volume: 72(3) Issue: 3 Pages: 381-388

    • DOI

      10.1107/s2052520616005114

    • Related Report
      2016 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Variable-temperature single-crystal X-ray diffraction study of tetragonal and cubic perovskite-type barium titanate phases2016

    • Author(s)
      Tomotaka Nakatani, Akira Yoshiasa, Akihiko Nakatsuka, Tatsuya Hiratoko, Tsutomu Mashimo, Maki Okube and Satoshi Sasaki,
    • Journal Title

      Acta Crystallographica B

      Volume: B72 Issue: 1 Pages: 151-159

    • DOI

      10.1107/s2052520615022544

    • Related Report
      2016 Annual Research Report 2015 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Temperature dependence of Zr and Ti K-edge XANES spectra for para- and ferro-electric perovskite-type PbZrO3, PbTiO3 and BaTiO32016

    • Author(s)
      A Yoshiasa, T Nakatani, T Hiratoko, T Tobase, A Nakatsuka, M Okube, H Arima and K Sugiyama
    • Journal Title

      Journal of Physics: Conference Series

      Volume: 712 Pages: 012121-012121

    • DOI

      10.1088/1742-6596/712/1/012121

    • Related Report
      2016 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] XAFS study of Zr in Cretaceous–Tertiary boundary clays from Stevns Klint2015

    • Author(s)
      Tsubasa Tobase, Akira Yoshiasa, Ling Wang, Tatsuya Hiraroko, Hidetomo Hongu, Maki Okube and Kazumasa Sugiyama
    • Journal Title

      Journal of Mineralogical and Petrological Sciences

      Volume: 110 Issue: 2 Pages: 88-91

    • DOI

      10.2465/jmps.141022a

    • NAID

      130005067165

    • ISSN
      1345-6296, 1349-3825
    • Related Report
      2015 Annual Research Report
    • Peer Reviewed
  • [Presentation] 異常分散法を用いたTi0.31 Fe2.69O4の 陽イオンの占有席率解析2018

    • Author(s)
      奥部真樹,鴛海太郎,長瀬敏郎,佐々木聡,杉山和正
    • Organizer
      量子ビームサイエンスフェスタ,水戸
    • Related Report
      2017 Annual Research Report
  • [Presentation] 異常分散法を用いたチタノマグネタイトの陽イオン価数分布解析2017

    • Author(s)
      奥部真樹,鴛海太郎,長瀬敏郎,佐々木聡,杉山和正
    • Organizer
      日本結晶学会年会,広島
    • Related Report
      2017 Annual Research Report
  • [Presentation] 円偏光 X 線共鳴磁気散乱(CP -RXMS)法 :(2)Gd IG 磁気構造の温度変化2017

    • Author(s)
      奥部真樹, 逢坂尚志, 佐々木 聡
    • Organizer
      日本結晶学会年会,広島
    • Related Report
      2017 Annual Research Report
  • [Presentation] X線異常分散法による、らせん対称性をもつ鉱物の キラリティの決定2017

    • Author(s)
      鴛海太郎, 奥部真樹, 有馬寛, 長瀬敏郎, 杉山和正
    • Organizer
      日本鉱物科学会年会
    • Related Report
      2017 Annual Research Report
  • [Presentation] X線異常分散効果を用いた、らせん対称性の決定2017

    • Author(s)
      鴛海太郎, 奥部真樹, 長瀬敏郎, 杉山和正
    • Organizer
      第134回東北大学金属材料研究所講演会
    • Related Report
      2017 Annual Research Report
  • [Presentation] XAFS法による元素の局所構造解析と濃集過程の推定:K-T境界粘土層中のSb, Asについて2017

    • Author(s)
      本宮秀朋, 鳥羽瀬翼, 吉朝朗, 磯部博志, 奥部真樹, 有馬寛, 杉山和正, 宮脇律郎
    • Organizer
      日本鉱物科学会年会
    • Related Report
      2017 Annual Research Report
  • [Presentation] Mn1+xFe2-xO4における陽イオン分布と電子状態の席選択的解析2016

    • Author(s)
      奥部真樹・佐々木聡
    • Organizer
      2015年度量子ビームサイエンスフェスタ
    • Place of Presentation
      つくば国際会議場
    • Year and Date
      2016-03-15
    • Related Report
      2015 Annual Research Report
  • [Presentation] Site occupancy and energy state of electrons of Mn in MnxFe3-xO4 spinel2016

    • Author(s)
      M. Okube and S. Sasaki
    • Organizer
      14th Conference of the Asian crystallographic Association, Honoi, Vietnam
    • Related Report
      2016 Annual Research Report
    • Int'l Joint Research
  • [Presentation] 円偏光X線と共鳴・非共鳴磁気散乱(1) Gd鉄ガーネット2016

    • Author(s)
      佐々木暢,奥部真樹,佐々木聡
    • Organizer
      日本結晶学会年会
    • Related Report
      2016 Annual Research Report
  • [Presentation] Circularly polarized X-rays and appearance of resonant and non-resonant magnetic scatterings2016

    • Author(s)
      K. Fuchigami, Y. Sasaki, M. Okube and S. Sasaki
    • Organizer
      14th Conference of the Asian crystallographic Association, Honoi, Vietnam
    • Related Report
      2016 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Magnetic electron-density distributions in Y and Gd iron garnets observed by synchrotron X-ray diffraction at the Fe K pre-edge2016

    • Author(s)
      S. Nishino, Y. Sasaki, M. Okube and S. Sasaki
    • Organizer
      14th Conference of the Asian crystallographic Association, Honoi, Vietnam
    • Related Report
      2016 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Temperature dependence of magnetic moments of Fe ions Gd3Fe5O12 examined by resonant X-ray magnetic scattering2016

    • Author(s)
      T. Osaka, M. Okube and S. Sasaki
    • Organizer
      14th Conference of the Asian crystallographic Association, Honoi, Vietnam
    • Related Report
      2016 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Mnフェライトの陽イオン席占有率と電子密度分布2015

    • Author(s)
      奥部真樹・佐々木聡
    • Organizer
      日本結晶学会年会
    • Place of Presentation
      大阪府立大学
    • Year and Date
      2015-10-17
    • Related Report
      2015 Annual Research Report
  • [Presentation] Displacement correlation functions and mean square displacements in CaGeO3 perovskite and garnet phases2015

    • Author(s)
      Akira Yoshiasa, Tsubasa Tobase, Akihiko Nakatsuka, Maki Okube, Hiroshi Arima and Kazumasa Sugiyama
    • Organizer
      12th International Congress for Applied Mineralogy(国際学会)
    • Place of Presentation
      Istanbul, Turkey
    • Year and Date
      2015-08-10
    • Related Report
      2015 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Unique temperature dependence of Zr and Ti XANES spectra for para- and ferro-electric perovskite-type compounds2015

    • Author(s)
      Akira Yoshiasa, Tatsuya Hiratoko, Tomotaka Nakatani, Maki Okube, Akihiko Nakatsuka, Hiroshi Arima, Kazumasa Sugiyama
    • Organizer
      The 12th International Conference on Synchrotron Radiation Instrumentation
    • Place of Presentation
      New York
    • Year and Date
      2015-07-06
    • Related Report
      2015 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Unique local structures of Ca, Ti, Fe and Zr in natural glasses formed by meteorite impact.2015

    • Author(s)
      Akira Yoshiasa, Tsubasa Tobase, Maki Okube, Ling Wang, Hiroshi Isobe and Tsutomu Mashimo
    • Organizer
      The 19th American Physical Society Shock Compression of Condensed Matter conference
    • Place of Presentation
      Tampa, FL
    • Year and Date
      2015-06-14
    • Related Report
      2015 Annual Research Report
    • Int'l Joint Research

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Published: 2015-04-16   Modified: 2019-03-29  

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