このエントリーをはてなブックマークに追加
ID 49752
本文ファイル
著者
Kato, Chisato
Machida, Ryo
Maruyama, Rio
Tsunashima, Ryo
Ren, Xiao-Ming
Kurmoo, Mohamedally
Inoue, Katsuya 大学院理学研究科 広大研究者総覧
キーワード
molecular devices
molecular electronics
polyoxometalates
terbium
抄録(英)
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.
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。
掲載誌名
Angewandte Chemie International Edition
57巻
41号
開始ページ
13429
終了ページ
13432
出版年月日
2018-10-08
出版者
Wiley
ISSN
1433-7851
1521-3773
出版者DOI
言語
英語
NII資源タイプ
学術雑誌論文
広大資料タイプ
学術雑誌論文
DCMIタイプ
text
フォーマット
application/pdf
著者版フラグ
author
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。
関連情報URL(IsVersionOf)
https://doi.org/10.1002/anie.201806803
部局名
理学研究科