• Search Research Projects
  • Search Researchers
  • How to Use
  1. Back to previous page

Photoinduced physical-properties switching of photochromic rare-earth metal oxyhydrides thin films

Research Project

Project/Area Number 19H02596
Research Category

Grant-in-Aid for Scientific Research (B)

Allocation TypeSingle-year Grants
Section一般
Review Section Basic Section 29020:Thin film/surface and interfacial physical properties-related
Research InstitutionTokyo Institute of Technology

Principal Investigator

Shimizu Ryota  東京工業大学, 物質理工学院, 准教授 (70611953)

Co-Investigator(Kenkyū-buntansha) 関場 大一郎  筑波大学, 数理物質系, 講師 (20396807)
Project Period (FY) 2019-04-01 – 2022-03-31
Project Status Completed (Fiscal Year 2021)
Budget Amount *help
¥17,810,000 (Direct Cost: ¥13,700,000、Indirect Cost: ¥4,110,000)
Fiscal Year 2021: ¥2,470,000 (Direct Cost: ¥1,900,000、Indirect Cost: ¥570,000)
Fiscal Year 2020: ¥4,160,000 (Direct Cost: ¥3,200,000、Indirect Cost: ¥960,000)
Fiscal Year 2019: ¥11,180,000 (Direct Cost: ¥8,600,000、Indirect Cost: ¥2,580,000)
Keywords薄膜物性 / 複合アニオン化合物 / 光物性 / 電子物性 / 電気化学 / 金属水素化物 / エピタキシャル成長 / 光・電子物性 / 水素化物薄膜物性 / 光誘起物性
Outline of Research at the Start

イットリウム酸水素化物薄膜において光照射による可逆的な5桁の抵抗変化を見出し、新奇光センサや抵抗・磁気メモリの応用を目指している。次なるステップとして、本研究では希土類酸水素化物における多機能なフォトクロミック素子応用を志向し、「光キャリア生成機構と磁気特性の解明」、「可逆的な透過・反射特性および金属化」「強磁性化」の実現を目指す。

Outline of Final Research Achievements

In this study, we demonstrated repeatable photoinduced insulator-to-metal transition of rare-earth metal oxyhydrides using ultraviolet laser illumination for the first time. This permanent photoconductivity can be switched to the original insulating states by thermal annealing in argon atmosphere at 120oC for 2h. To investigate this photoinduced metallization, we performed high-resolution measurements including compositional and structural analysis based on sparse modeling technique, and obtained reliable structural models for theoretical calculations. The theoretical calculations reveals that excess hydrogen in the films can generate itinerant photocarriers, leading to metallic conduction. Thus, we succeeded in the exotic functions based on hydrogen in rare-earth metal oxyhydrides.

Academic Significance and Societal Importance of the Research Achievements

光による絶縁体から金属へのスイッチングを繰り返し行った例は、どの物質においても世界で初めての成果である(プレスリリース済み)。未発表ではあるが、任意のタイミングにおける絶縁化の時間短縮にも成功しており、スマートウィンドウや光センサ・光メモリ応用につながる画期的な成果である。

Report

(4 results)
  • 2021 Annual Research Report   Final Research Report ( PDF )
  • 2020 Annual Research Report
  • 2019 Annual Research Report
  • Research Products

    (27 results)

All 2022 2021 2020 2019

All Journal Article (8 results) (of which Int'l Joint Research: 2 results,  Peer Reviewed: 8 results,  Open Access: 6 results) Presentation (17 results) (of which Int'l Joint Research: 4 results,  Invited: 10 results) Book (2 results)

  • [Journal Article] Repeatable Photoinduced Insulator-to-Metal Transition in Yttrium Oxyhydride Epitaxial Thin Films2022

    • Author(s)
      Y. Komatsu, Ryota Shimizu, R. Sato, M. Wilde, K. Nishio, T. Katase, D. Matsumura, H. Saitoh, M. Miyauchi, J. R. Adelman, R. M. L. McFadden, D. Fujimoto, J. O. Ticknor, M. Stachura, I. McKenzie, G. D. Morris, W. A. MacFarlane, J. Sugiyama, K. Fukutani, S. Tsuneyuki, T. Hitosugi
    • Journal Title

      Chemistry of Materials

      Volume: 34 Issue: 8 Pages: 3616-3623

    • DOI

      10.1021/acs.chemmater.1c03450

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Bayesian sparse modeling of extended X-ray absorption fine structure to determine interstitial oxygen positions in yttrium oxyhydride epitaxial thin film2021

    • Author(s)
      Hiroyuki Kumazoe, Yasuhiko Igarashi, Fabio Iesari, Ryota Shimizu, Yuya Komatsu, Taro Hitosugi, Daiju Matsumura, Hiroyuki Saitoh, Kazunori Iwamitsu, Toshihiro Okajima, Yoshiki Seno, Masato Okada, Ichiro Akai
    • Journal Title

      AIP Advances

      Volume: 11 Issue: 12 Pages: 125013-125013

    • DOI

      10.1063/5.0071166

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Metal hydrides: Epitaxial thin film growth and electronic properties2020

    • Author(s)
      清水 亮太、大口 裕之、一杉 太郎
    • Journal Title

      Oyo Buturi

      Volume: 89 Issue: 1 Pages: 20-24

    • DOI

      10.11470/oubutsu.89.1_20

    • NAID

      130007783795

    • ISSN
      0369-8009, 2188-2290
    • Year and Date
      2020-01-10
    • Related Report
      2019 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Polarity reversal of the charge carrier in tetragonal TiHx(x=1.6-2.0) at low temperatures2020

    • Author(s)
      Shimizu Ryota、Sasahara Yuki、Hamada Ikutaro、Oguchi Hiroyuki、Ogura Shohei、Shirasawa Tetsuroh、Kitamura Miho、Horiba Koji、Kumigashira Hiroshi、Orimo Shin-ichi、Fukutani Katsuyuki、Hitosugi Taro
    • Journal Title

      Physical Review Research

      Volume: 2 Issue: 3 Pages: 0334671-9

    • DOI

      10.1103/physrevresearch.2.033467

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Epitaxial Thin Film Growth of Europium Dihydride2020

    • Author(s)
      Yuya Komatsu, Ryota Shimizu, Markus Wilde, Shigeru Kobayashi, Yuki Sasahara, Kazunori Nishio, Kei Shigematsu, Akira Ohtomo, Katsuyuki Fukutani, and Taro Hitosugi
    • Journal Title

      Cryst. Growth Des.

      Volume: 20 Issue: 9 Pages: 5903-5903

    • DOI

      10.1021/acs.cgd.0c00602

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Impact of Surface Roughness on Recrystallization of an α-Al2O3(001) Single Crystal to α-AlO(OH) Diaspore Microcrystals2020

    • Author(s)
      Yuki Sasahara, Koki Kanatani, Masayuki Matsuhisa, Yuji Wada, Ryota Shimizu, Norimasa Nishiyama, and Taro Hitosugi
    • Journal Title

      ACS Omega

      Volume: 5 Issue: 37 Pages: 23520-23523

    • DOI

      10.1021/acsomega.0c01376

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Metal Hydrides: Epitaxial Growth and Electronic Properties2020

    • Author(s)
      Shimizu Ryota、Oguchi Hiroyuki、Hitosugi Taro
    • Journal Title

      Journal of the Physical Society of Japan

      Volume: 89 Issue: 5 Pages: 051012-051012

    • DOI

      10.7566/jpsj.89.051012

    • NAID

      210000158109

    • Related Report
      2019 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Epitaxial Growth of Single-Phase Magnesium Dihydride Thin Films2019

    • Author(s)
      Shimizu Ryota、Kakinokizono Takuya、Gu Igseon、Hitosugi Taro
    • Journal Title

      Inorganic Chemistry

      Volume: 58 Issue: 22 Pages: 15354-15358

    • DOI

      10.1021/acs.inorgchem.9b02399

    • Related Report
      2019 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Presentation] MRS-Japan Physical properties control in metal hydride epitaxial thin films by tuning c harge state in hydrogen2021

    • Author(s)
      Ryota Shimizu Yuya Komatsu, Seoungmin Chon, and Taro Hitosugi
    • Organizer
      Materials Research Meeting
    • Related Report
      2021 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Photo-induced hydrogen diffusion in yttrium oxy-hydride epitaxial thin films2021

    • Author(s)
      Yuya Komatsu, Jun Sugiyama, Ryota Shimizu, Kazunori Nishio, Masahiro Miyauchi, Markus Wilde, Katsuyuki Fukutani, Ryan McFadden, Martin Dehn, Victoria Karner, Derek Fujimoto, John Ticknor, Aris Chatzichristos, Monika Stachura, David Cortie, Gerald Morris, Dr. Iain McKenzie, W MacFarlane, Taro Hitosugi
    • Organizer
      Pacifichem2021
    • Related Report
      2021 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Repeatable photo-induced insulator-to-metal transition in YOxHy epitaxial thin films2021

    • Author(s)
      Yuya Komatsu, Ryota Shimizu, Ryuhei Sato, Markus Wilde, Kazunori Nishio, Daiju Matsumura, Hiroyuki Saitoh, Katsuyuki Fukutani, Shinji Tsuneyuki, Taro Hitosugi
    • Organizer
      Materials Research Meeting
    • Related Report
      2021 Annual Research Report
    • Int'l Joint Research
  • [Presentation] NaOH水溶液中電場印加によるYOxHy薄膜の金属-絶縁体転移2021

    • Author(s)
      小松 遊矢, 清水 亮太, ビルデ マーカス, 西尾 和記, 福谷 克之, 一杉 太郎
    • Organizer
      第82回応用物理学会秋季学術講演会
    • Related Report
      2021 Annual Research Report
    • Invited
  • [Presentation] Selective fabrication of Ca2NH epitaxial thin films using magnetron sputtering system2021

    • Author(s)
      Seoungmin Chon, Shigeru Kobayashi, Kazunori Nishio, Ryota Shimizu, Taro Hitosugi
    • Organizer
      日本化学会春季年会 第101回春季大会
    • Related Report
      2020 Annual Research Report
  • [Presentation] イッテルビウム水素化物薄膜のエピタキシャル成長と電気・光学特性評価2021

    • Author(s)
      邱 天裕, 小松 遊矢, 清水 亮太, ビルデ マーカス, 福谷 克之, 一杉 太郎
    • Organizer
      応用物理学会 第68回 春季学術講演会
    • Related Report
      2020 Annual Research Report
  • [Presentation] YOxHyエピタキシャル薄膜の光誘起絶縁体-金属転移における水素の寄与2021

    • Author(s)
      小松 遊矢, 清水 亮太, 佐藤 龍平, ビルデ マーカス, 西尾 和記, 松村 大樹, 齋藤 寛之, 福谷 克之, 常行 真司, 一杉 太郎
    • Organizer
      応用物理学会 第68回 春季学術講演会
    • Related Report
      2020 Annual Research Report
  • [Presentation] 高圧相α-PbO2型TiO2エピタキシャル薄膜の高圧合成2021

    • Author(s)
      笹原 悠輝, 金谷 航葵, 遊馬 博明, 西尾 和記, 清水 亮太, 西山 宣正, 一杉 太郎
    • Organizer
      強的秩序とその操作に関わる第12回講演会
    • Related Report
      2020 Annual Research Report
  • [Presentation] 金属水素化物薄膜における水素の荷電状態変化と電子・イオン物性制御2020

    • Author(s)
      清水亮太, 一杉太郎
    • Organizer
      第46回 固体イオニクス討論会
    • Related Report
      2020 Annual Research Report
    • Invited
  • [Presentation] AIとロボットを導入した自律的無機材料合成2020

    • Author(s)
      清水亮太
    • Organizer
      第30回MRS-J年次大会
    • Related Report
      2020 Annual Research Report
    • Invited
  • [Presentation] イットリウム酸水素化物薄膜成長と光誘起絶縁体-金属転移2020

    • Author(s)
      清水亮太
    • Organizer
      日本物理学会2020年秋季大会
    • Related Report
      2020 Annual Research Report
    • Invited
  • [Presentation] AI-ロボット合成システムの導入による無機薄膜材料研究2020

    • Author(s)
      清水 亮太
    • Organizer
      ISSP Workshop 次世代放射光への イノベーション
    • Related Report
      2019 Annual Research Report
    • Invited
  • [Presentation] イットリウム酸水素化物薄膜成長と光誘起絶縁体―金属転移2020

    • Author(s)
      清水 亮太
    • Organizer
      第75回日本物理学会年次大会
    • Related Report
      2019 Annual Research Report
    • Invited
  • [Presentation] 金属水素化物薄膜の水素組成制御と物性2019

    • Author(s)
      清水 亮太
    • Organizer
      新学術領域「ハイドロジェノミクス」第4回若手育成スクール
    • Related Report
      2019 Annual Research Report
    • Invited
  • [Presentation] AI-Robot システムを導入した無機固体材料研究2019

    • Author(s)
      清水 亮太
    • Organizer
      JSTさきがけ「マテリアルズインフォ」第3回公開シンポジウム
    • Related Report
      2019 Annual Research Report
    • Invited
  • [Presentation] Epitaxial growth of metal hydride thin films and their unique physical properties2019

    • Author(s)
      Ryota Shimizu
    • Organizer
      The 5th Japan-Korea Joint Symposium on Hydrogen in Materials
    • Related Report
      2019 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] 金属水素化物のエピタキシャル成長と電子物性制御2019

    • Author(s)
      清水 亮太
    • Organizer
      第2回ハイドロジェノミクス研究会
    • Related Report
      2019 Annual Research Report
    • Invited
  • [Book] “水素”を使いこなすためのサイエンス ハイドロジェノミクス2022

    • Author(s)
      折茂 慎一・福谷 克之・藤田 健一編著
    • Total Pages
      224
    • Publisher
      共立出版
    • ISBN
      9784320044982
    • Related Report
      2021 Annual Research Report
  • [Book] 人と共生するAI革命 ~活用事例からみる生活・産業・社会の未来展望~ 「AIとロボットを融合した全自動システムによる機能性薄膜創製」部 分担執筆2019

    • Author(s)
      清水亮太、一杉太郎
    • Total Pages
      480
    • Publisher
      (株) エヌ・ティー・エス
    • Related Report
      2019 Annual Research Report

URL: 

Published: 2019-04-18   Modified: 2023-01-30  

Information User Guide FAQ News Terms of Use Attribution of KAKENHI

Powered by NII kakenhi