Clarification of Microscopic Origin of Photo-Induced Properties in Dielectrics by Operando Electron Microscopy
| Project/Area Number |
18H01710
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| Research Category |
Grant-in-Aid for Scientific Research (B)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Review Section |
Basic Section 26020:Inorganic materials and properties-related
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| Research Institution | Kyushu University |
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Principal Investigator |
Sato Yukio 九州大学, 工学研究院, 准教授 (80581991)
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| Co-Investigator(Kenkyū-buntansha) |
森分 博紀 一般財団法人ファインセラミックスセンター, その他部局等, 主席研究員 (40450853)
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| Project Period (FY) |
2018-04-01 – 2021-03-31
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| Project Status |
Completed (Fiscal Year 2020)
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| Budget Amount *help |
¥17,940,000 (Direct Cost: ¥13,800,000、Indirect Cost: ¥4,140,000)
Fiscal Year 2020: ¥2,470,000 (Direct Cost: ¥1,900,000、Indirect Cost: ¥570,000)
Fiscal Year 2019: ¥2,470,000 (Direct Cost: ¥1,900,000、Indirect Cost: ¥570,000)
Fiscal Year 2018: ¥13,000,000 (Direct Cost: ¥10,000,000、Indirect Cost: ¥3,000,000)
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| Keywords | 誘電体 / その場観察 / 電子顕微鏡 / 電場印加 / 光 / ドメイン / 格子定数 / 光物性 / 強誘電体 / 歪み / 起電力 / 電場 / 圧電体 / 微構造 / 圧電 |
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| Outline of Final Research Achievements |
We have developed photo-electric field induced operando electron microscopy in order to understand the origin of physical properties from direct observation of microstructural change. We applied this method to dielectric/ferroelectric materials for measuring photo-induced voltage and change of nanostructure as well as atomic arrangement. By using the newly developed electron microscopy specimen holder, we have succeeded in observing electric-field induced strain as small as 7 picometer, discovering lamellar-like nanostructure in relaxor ferroelectrics, and developing two-step affine transformation method that allows us to measure lattice parameters from atomic-scale scanning transmission electron microscopy image very accurately.
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| Academic Significance and Societal Importance of the Research Achievements |
本研究の学術的な意義は、電場・光という外的刺激を与えたままで原子分解能電子顕微鏡観察および高精度原子位置測定が可能であるという技術的なポテンシャルを示したこと、強誘電体分野における新規ナノ構造を発見したことなどにある。社会的な意義としては、開発された手法が誘電体のみならず、電池、トランジスタ等の光・電気デバイスの解析にも適用可能であることから材料解析の新しい可能性が拓かれたことや、新しい誘電体材料の開発につながり得る知見が得られたことが挙げられる。
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Report
(4 results)
Research Products
(89 results)
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[Journal Article] A NiRhS Fuel Cell Catalyst-Lessons from Hydrogenase.2020
Author(s)
Ogo, Seiji;* Ando, Tatsuya; Thi Minh, Le Tu; Mori, Yuki; Matsumoto, Takahiro; Yatabe, Takeshi; Yoon, Ki-Seok; Sato, Yukio; Hibino, Takashi; Kaneko, Kenji.
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Journal Title
Chem. Commun.
Volume: 56
Pages: 11787-11790
DOI
Related Report
Peer Reviewed
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[Journal Article] Microstructures of superconducting joint between GdBa2Cu3Oy-coated conductors via additionally deposited precursor films2019
Author(s)
Tomohiro Miyajima, Ryo Teranishi, Syotaro Yasuyama, Yukio Sato, Kenji Kaneko, Takuya Maeda, Minoru Ochi, Kazuya Hiramatsu, Miyuki Nakamura, Valery Petrykin, Sergey Lee, Tatsunori Okada, and Satoshi Awaji
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Journal Title
Japanese Journal of Applied Physics
Volume: 58
Issue: 5
Pages: 050913-050913
DOI
ISSN
0021-4922, 1347-4065
Related Report
Peer Reviewed / Int'l Joint Research
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[Journal Article] Influence of joint pressure on superconducting and mechanical properties for jointed GdBa2Cu3Oy coated conductors via precursor films2019
Author(s)
Tomohiro Miyajima, Ryo Teranishi, Syotaro Yasuyama, Yukio Sato, Kenji Kaneko, Valery Petrykin, Sergey Lee, Tatsunori Okada, Satoshi Awaji, and Akiyoshi Matsumoto
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Journal Title
Japanese Journal of Applied Physics
Volume: 58
Issue: 5
Pages: 050907-050907
DOI
NAID
ISSN
0021-4922, 1347-4065
Related Report
Peer Reviewed / Int'l Joint Research
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[Presentation] 0.8BiFeO3－0.2BaTiO3のナノおよび原子スケール構造解析2020
Author(s)
宮内隆輝, 佐藤幸生, 寺西亮, 金子賢治, Kim Sangwook, 藤井一郎, 上野慎太郎, 中平夕貴, 森吉千佳子, 黒岩芳弘, 和田智志
Organizer
日本物理学会2020年秋季大会
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