期刊
SCRIPTA MATERIALIA
卷 178, 期 -, 页码 334-338出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.scriptamat.2019.11.061
关键词
In-situ TEM; Electric fatigue; Ferroelectric domains; Relaxor-ferroelectric transition
类别
资金
- National Science Foundation (NSF) [DMR-1465254]
The polarization degradation during electric field cycling in a ferroelectric ceramic is closely related to the phase composition. In the present work, electric biasing in-situ transmission electron microscopy (TEM) fatigue tests are conducted on relaxors of (1-x)(Bi1/2Na1/2)TiO3-xSrTiO(3). It is directly observed that the ceramic of x = 0.25 features an irreversible relaxor-ferroelectric phase transition and the domain walls in the metastable ferroelectric phase sweep shorter and shorter distances during cycling. In contrast, the ceramic of x = 0.27 features a reversible relaxor-ferroelectric transition and the domain walls in the transient ferroelectric phase remain highly mobile even after 10(4) cycles. (C) 2019 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据