Giant Hysteretic Single‐Molecule Electric Polarisation Switching above Room Temperature
Angewandte Chemie International Edition 57 巻 41 号
13429-13432 頁
2018-10-08 発行
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| ファイル情報(添付) | |
| タイトル ( eng ) |
Giant Hysteretic Single‐Molecule Electric Polarisation Switching above Room Temperature
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| 作成者 |
Kato Chisato
Machida Ryo
Maruyama Rio
Tsunashima Ryo
Ren Xiao-Ming
Kurmoo Mohamedally
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| 収録物名 |
Angewandte Chemie International Edition
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| 巻 | 57 |
| 号 | 41 |
| 開始ページ | 13429 |
| 終了ページ | 13432 |
| 抄録 |
Continual progress has been achieved in information technology through unrelenting miniaturisation of the single memory bit in integrated ferromagnetic, ferroelectric, optical, and related circuits. However, as miniaturisation approaches its theoretical limit, new memory materials are being sought. Herein, we report a unique material exhibiting single‐molecule electric polarisation switching that can operate above room temperature. The phenomenon occurs in a Preyssler‐type polyoxometalate (POM) cluster we call a single‐molecule electret (SME). It exhibits all the characteristics of ferroelectricity but without long‐range dipole ordering. The SME affords bi‐stability as a result of the two potential positions of localisation of a Tb3+ ion trapped in the POM, resulting in extremely slow relaxation of the polarisation and electric hysteresis with high spontaneous polarisation and coercive electric fields. Our findings suggest that SMEs can potentially be applied to ultrahigh‐density memory and other molecular‐level electronic devices operating above room temperature.
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| 著者キーワード |
molecular devices
molecular electronics
polyoxometalates
terbium
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| 内容記述 |
This study was supported by JSPS KAKENHI Grant Numbers JP16H04223, JP16K14101, JP24350095, and JP25220803;the Joint Research Project between JSPS and the National Science Foundation of China (NSFC);and JSPS Core-to-Core Program, A. Advanced Research Networks. This work was also performed under the aegis of the Canon Science Promotion Foundation, Murata Science Foundation, Casio Science Promotion Foundation, and the Cooperative Research Program of “Network Joint Research Centre for Materials and Devices”. M.K. is also funded by CNRS, France.
アクセプト後にキーワード・アブストラクト等変更あり。
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| 言語 |
英語
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| 資源タイプ | 学術雑誌論文 |
| 出版者 |
Wiley
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| 発行日 | 2018-10-08 |
| 権利情報 |
© 2018 Wiley‐VCH Verlag GmbH & Co. KGaA, Weinheim
This is the peer reviewed version of the following article: C. Kato, R. Machida, R. Maruyama, R. Tsunashima, X.-M. Ren, M. Kurmoo, K. Inoue, S. Nishihara, Angew. Chem. Int. Ed. 2018, 57, 13429., which has been published in final form at https://doi.org/10.1002/anie.201806803. This article may be used for non-commercial purposes in accordance with Wiley Terms and Conditions for Use of Self-Archived Versions.
This is not the published version. Please cite only the published version. この論文は出版社版ではありません。引用の際には出版社版をご確認、ご利用ください。
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| 出版タイプ | Author’s Original（十分な品質であるとして、著者から正式な査読に提出される版） |
| アクセス権 | オープンアクセス |
| 収録物識別子 |
[ISSN] 1433-7851
[ISSN] 1521-3773
[DOI] 10.1002/anie.201806803
[DOI] https://doi.org/10.1002/anie.201806803
～の異版である
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