Applications and New Functions of Single-Molecule Electrets (SMEs)
| Project/Area Number |
16H04223
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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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| Research Field |
Device related chemistry
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| Research Institution | Hiroshima University |
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Principal Investigator |
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| Co-Investigator(Kenkyū-buntansha) |
戸川 欣彦 大阪府立大学, 工学(系)研究科(研究院), 教授 (00415241)
帯刀 陽子 東京農工大学, 工学(系)研究科(研究院), 講師 (30435763)
久保田 佳基 大阪府立大学, 理学(系)研究科(研究院), 教授 (50254371)
綱島 亮 山口大学, 大学院創成科学研究科, 准教授 (70466431)
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| Project Period (FY) |
2016-04-01 – 2019-03-31
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| Project Status |
Completed (Fiscal Year 2018)
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| Budget Amount *help |
¥17,030,000 (Direct Cost: ¥13,100,000、Indirect Cost: ¥3,930,000)
Fiscal Year 2018: ¥2,080,000 (Direct Cost: ¥1,600,000、Indirect Cost: ¥480,000)
Fiscal Year 2017: ¥2,860,000 (Direct Cost: ¥2,200,000、Indirect Cost: ¥660,000)
Fiscal Year 2016: ¥12,090,000 (Direct Cost: ¥9,300,000、Indirect Cost: ¥2,790,000)
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| Keywords | 強誘電 / 単分子 / ポリオキソメタレート / 高密度メモリ / 単分子誘電体 / イオン移動 / 強誘電体 / 分極 / 誘電体 / メモリ / 常誘電 / 誘電率 / 分子エレクトロニクス / 分子デバイス |
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| Outline of Final Research Achievements |
In this study, we discovered a unique material exhibiting single-molecule electric polarisation switching that can be operated above room temperature. This switching appears on a Preyssler-type polyoxometalate (POM) cluster, which is named single-molecule electret (SME). The SME affords bi-stability due to the two potential positions of localisation of a terbium ion (Tb3+), which results in extremely slow relaxation of the polarization and electric hysteresis with very high spontaneous polarisation and coercive electric fields.
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| Academic Significance and Societal Importance of the Research Achievements |
本研究において，単一分子で恰も強誘電体の様な分極ヒステリシスや自発分極を有す「単分子誘電体」の開発に成功した。当該成果は，既に頭打ちとなっている記録媒体の記録密度の大幅な向上に繋がるものと期待される。実際，この研究でターゲットとしたPreyssler型 ポリオキソメタレート分子は高い水溶性，耐熱性など，実用化に適した多くの性質を有している。
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Report
(2 results)
Research Products
(59 results)
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[Journal Article] Synthesis of epsilon-Keggin-Type Cobaltomolybdate-Based 3D Framework Material and Characterization Using Atomic-Scale HAADF-STEM and XANES2017
Author(s)
Igarashi, T; Zhang, ZX; Haioka, T; Iseki, N; Hiyoshi, N; Sakaguchi, N; Kato, C; Nishihara, S; Inoue, K; Yamamoto, A; Yoshida, H; Tsunoji, N; Ueda, W; Sano, T; Sadakane, M
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Journal Title
INORGANIC CHEMISTRY
Volume: 56
Issue: 4
Pages: 2042-2049
DOI
Related Report
Peer Reviewed / Open Access / Int'l Joint Research
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[Journal Article] Synthesis, Characterisation, and Structure of a Reduced Preyssler-Type Polyoxometalate2017
Author(s)
C. Kato, K. Y. Maryunina, K. Inoue, S. Yamaguchi, H. Miyaoka, A. Hayashi, M. Sadakane, R. Tsunashima, S. Nishihara
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Journal Title
Chem. Lett.
Volume: 46
Issue: 4
Pages: 602-604
DOI
NAID
Related Report
Peer Reviewed / Open Access / Int'l Joint Research / Acknowledgement Compliant
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[Journal Article] Collective resonant dynamics of the chiral spin soliton lattice in a monoaxial chiral magnetic crystal2017
Author(s)
F. J. T. Goncalves, T. Sogo, Y. Shimamoto, Y. Kousaka, J. Akimitsu, S. Nishihara, K. Inoue, D. Yoshizawa, M. Hagiwara, M. Mito, R. L. Stamps, I. G. Bostrem, V. E. Sinitsyn, A. S. Ovchinnikov, J. Kishine, and Y. Togawa
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Journal Title
Physical Review B
Volume: 95
Issue: 10
DOI
Related Report
Peer Reviewed / Int'l Joint Research
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[Journal Article] Orthorhombic distortion and orbital order in the vanadium spinel FeV2O42016
Author(s)
S. Kawaguchi, H. Ishibashi, S. Nishihara, S. Mori, J. Campo, F. Porcher, O. Fabelo, K. Sugimoto, J. Kim, K. Kato, M. Takata, H. Nakao, Y. Kubota
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Journal Title
Phys. Rev. B
Volume: 93
Issue: 2
Pages: 3831-3837
DOI
Related Report
Peer Reviewed / Open Access / Int'l Joint Research
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