Permanent ferroelectric retention of BiFeO3 mesocrystal

被引：54

作者：

Hsieh, Ying-Hui ^{[1
]}

Xue, Fei ^{[2
]}

Yang, Tiannan ^{[2
]}

Liu, Heng-Jui ^{[1
]}

Zhu, Yuanmin ^{[3
,4
]}

Chen, Yi-Chun ^{[5
]}

Zhan, Qian ^{[3
]}

Duan, Chun-Gang ^{[6
]}

Chen, Long-Qing ^{[2
]}

He, Qing ^{[7
]}

Chu, Ying-Hao ^{[1
,8
]}

机构：

[1] Natl Chiao Tung Univ, Dept Mat Sci & Engn, Hsinchu 30010, Taiwan

[2] Penn State Univ, Dept Mat & Engn, University Pk, PA 16802 USA

[3] Univ Sci & Technol Beijing, Sch Mat Sci & Engn, Beijing 100083, Peoples R China

[4] Tsinghua Univ, Sch Mat Sci & Engn, Natl Ctr Electron Microscopy Beijing, Beijing 100084, Peoples R China

[5] Natl Cheng Kung Univ, Dept Phys, Tainan 70101, Taiwan

[6] East China Normal Univ, Minist Educ, Key Lab Polar Mat & Devices, Shanghai 200241, Peoples R China

[7] Univ Durham, Dept Phys, Durham DH1 3LE, England

[8] Acad Sinica, Inst Phys, Taipei 11529, Taiwan

来源：

NATURE COMMUNICATIONS | 2016年 / 7卷

基金：

英国工程与自然科学研究理事会; 中国国家自然科学基金;

关键词：

PHASE-FIELD MODEL; THIN-FILMS; DOMAIN-STRUCTURES; MULTIFERROICS; FUNCTIONALITIES; MICROSTRUCTURE; POLARIZATION;

D O I：

10.1038/ncomms13199

中图分类号：

O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];

学科分类号：

07 ; 0710 ; 09 ;

摘要：

Non-volatile electronic devices based on magnetoelectric multiferroics have triggered new possibilities of outperforming conventional devices for applications. However, ferroelectric reliability issues, such as imprint, retention and fatigue, must be solved before the realization of practical devices. In this study, everlasting ferroelectric retention in the heteroepitaxially constrained multiferroic mesocrystal is reported, suggesting a new approach to overcome the failure of ferroelectric retention. Studied by scanning probe microscopy and transmission electron microscopy, and supported via the phase-field simulations, the key to the success of ferroelectric retention is to prevent the crystal from ferroelastic deformation during the relaxation of the spontaneous polarization in a ferroelectric nanocrystal.

引用

页数：9

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