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Experimental electron density study of interlayer interaction of layered transition metal dichalcogenides

Research Project

Project/Area Number 18K14136
Research Category

Grant-in-Aid for Early-Career Scientists

Allocation TypeMulti-year Fund
Review Section Basic Section 30010:Crystal engineering-related
Research InstitutionUniversity of Tsukuba

Principal Investigator

Kasai Hidetaka  筑波大学, 数理物質系, 助教 (80634807)

Project Period (FY) 2018-04-01 – 2021-03-31
Project Status Completed (Fiscal Year 2020)
Budget Amount *help
¥4,030,000 (Direct Cost: ¥3,100,000、Indirect Cost: ¥930,000)
Fiscal Year 2020: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2019: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2018: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Keywords放射光X線回折 / 層状物質 / 電子密度 / 原子配列 / 放射光その場観察 / ファンデルワールス力
Outline of Final Research Achievements

We have been challenging to observe atomic structure and electron density distribution of layered materials and other inorganic materials using synchrotron radiation X-ray diffraction. While we couldn’t report observation of electron density distribution of layered transition metal dichalcogenides and layered thermoelectric materials, we reported observation of accurate electron density distribution of the pure metal. We also observed detailed atomic structure of a layered material of which electric conductivity drastically increases with lattice expansion of a few %. In addition, we developed a hydrothermal reactor for in-situ synchrotron X-ray powder diffraction. Using the reactor, we obtained the diffraction data during hydrothermal synthesis of nanoparticles. We can apply the in-situ reactor to study of layered structure.

Academic Significance and Societal Importance of the Research Achievements

放射光X線回折を用いて、物質の機能の起源を理解するために不可欠な原子配列と電子密度分布を精密に観測した。この成果によって、無機物質とくに層状物質の機能の理解へ向けた知見を増やすことができた。加えて、水熱合成中のナノ粒子の原子配列の変化を追跡するその場観察装置を開発した。開発した装置によって、粒子成長の観測から層状構造の研究を発展できる。

Report

(4 results)
  • 2020 Annual Research Report   Final Research Report ( PDF )
  • 2019 Research-status Report
  • 2018 Research-status Report
  • Research Products

    (9 results)

All 2020 2019 2018 Other

All Int'l Joint Research (2 results) Journal Article (5 results) (of which Int'l Joint Research: 1 results,  Peer Reviewed: 5 results,  Open Access: 1 results) Presentation (2 results) (of which Int'l Joint Research: 1 results,  Invited: 1 results)

  • [Int'l Joint Research] オーフス大学(デンマーク)

    • Related Report
      2019 Research-status Report
  • [Int'l Joint Research] オーフス大学(デンマーク)

    • Related Report
      2018 Research-status Report
  • [Journal Article] Ion Product Scale for Phase and Size Selective Crystal Growth of Zirconia Nanoparticles2020

    • Author(s)
      Fujita Tomoki、Kasai Hidetaka、Nishibori Eiji
    • Journal Title

      Crystal Growth & Design

      Volume: 20 Issue: 8 Pages: 5589-5595

    • DOI

      10.1021/acs.cgd.0c00765

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Increased electrical conduction with high hole mobility in anti-ThCr2Si2-type La2O2Bi via oxygen intercalation adjacent to Bi square net2020

    • Author(s)
      Matsumoto Kota、Kawasoko Hideyuki、Kasai Hidetaka、Nishibori Eiji、Fukumura Tomoteru
    • Journal Title

      Applied Physics Letters

      Volume: 116 Issue: 19 Pages: 191901-191901

    • DOI

      10.1063/5.0005300

    • Related Report
      2019 Research-status Report
    • Peer Reviewed
  • [Journal Article] Aspherical and covalent bonding character of d electrons of molybdenum from synchrotron x-ray diffraction2019

    • Author(s)
      Sasaki Tomoaki、Kasai Hidetaka、Nishibori Eiji
    • Journal Title

      Journal of Physics Communications

      Volume: 3 Issue: 9 Pages: 095009-095009

    • DOI

      10.1088/2399-6528/ab41c9

    • NAID

      120007133089

    • Related Report
      2019 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Low-Temperature Structural Phase Transitions in Thermoelectric Tetrahedrite, Cu12Sb4S13, and Tennantite, Cu12As4S132019

    • Author(s)
      Hathwar Venkatesha R.、Nakamura Atsushi、Kasai Hidetaka、Suekuni Koichiro、Tanaka Hiromi I.、Takabatake Toshiro、Iversen Bo B.、Nishibori Eiji
    • Journal Title

      Crystal Growth & Design

      Volume: 19 Issue: 7 Pages: 3979-3988

    • DOI

      10.1021/acs.cgd.9b00385

    • Related Report
      2019 Research-status Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Hydrothermal reactor for in-situ synchrotron radiation powder diffraction at SPring-8 BL02B2 for quantitative design for nanoparticle2019

    • Author(s)
      Fujita Tomoki、Kasai Hidetaka、Nishibori Eiji
    • Journal Title

      The Journal of Supercritical Fluids

      Volume: 147 Pages: 172-178

    • DOI

      10.1016/j.supflu.2018.10.016

    • Related Report
      2018 Research-status Report
    • Peer Reviewed
  • [Presentation] 放射光X線回折による層状物質TiS2の層間相互作用の研究2020

    • Author(s)
      笠井秀隆, 西堀英治, Bo B. Iversen
    • Organizer
      第33回日本放射光学会年会・放射光科学合同シンポジウム
    • Related Report
      2019 Research-status Report
    • Invited
  • [Presentation] X-ray charge density study of chemical bonding in ZnSb2018

    • Author(s)
      Hidetaka Kasai, Jiawei Zhang, Kasper Tolborg, Anders B. Blichfeld, Mattia Sist, Venkatesha R. Hathwar, Jacob Overgaard, Eiji Nishibori, Bo B. Iversen
    • Organizer
      SAGAMORE 2018
    • Related Report
      2018 Research-status Report
    • Int'l Joint Research

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Published: 2018-04-23   Modified: 2022-01-27  

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