Home >

news ヘルプ

論文・著書情報


タイトル
和文:Room-Temperature Antiferroelectricity in Multiferroic Hexagonal Rare-Earth Ferrites 
英文:Room-Temperature Antiferroelectricity in Multiferroic Hexagonal Rare-Earth Ferrites 
著者
和文: Jun Kasahara, 片山 司, 川本 思心, 近松 彰, 濵嵜 容丞, 安井 伸太郎, 伊藤 満, 長谷川 哲也.  
英文: Jun Kasahara, Tsukasa Katayama, Shishin Mo, Akira Chikamatsu, Yosuke Hamasaki, Shintaro Yasui, Mitsuru Itoh, Tetsuya Hasegawa.  
言語 English 
掲載誌/書名
和文:ACS Applied Materials & Interfaces 
英文:ACS Applied Materials & Interfaces 
巻, 号, ページ Vol. 129        pp. 4230-4235
出版年月 2021年1月 
出版者
和文: 
英文:American Chemical Society 
会議名称
和文: 
英文: 
開催地
和文: 
英文: 
公式リンク https://doi.org/10.1021/acsami.0c20924
 
DOI https://doi.org/10.1021/acsami.0c20924
アブストラクト The antiferroelectric (AFE) phase, in which nonpolar and polar states are switchable by an electric field, is a recent discovery in promising multiferroics of hexagonal rareearth manganites (ferrites), h-RMn(Fe)O3. However, this phase has so far only been observed at 60−160 K, which restricts key investigations into the microstructures and magnetoelectric behaviors. Herein, we report the successful expansion of the AFE temperature range (10−300 K) by preparing h-DyFeO3 films through epitaxial stabilization. Room-temperature scanning transmission electron microscopy reveals that the AFE phase originates from a nanomosaic structure comprising AFE P3̅c1 and ferroelectric P63cm domains with small domain sizes of 1− 10 nm. The nanomosaic structure is stabilized by a low c/a ratio derived from the large ionic radius of Dy3+. Furthermore, weak ferromagnetism and magnetocapacitance behaviors are observed. Below 10 K, the film exhibits an M-shaped magnetocapacitance versus magnetic field curve, indicating unusual magnetoelectric coupling in the AFE phase.

©2007 Tokyo Institute of Technology All rights reserved.