期刊
SOLID STATE COMMUNICATIONS
卷 150, 期 1-2, 页码 101-103出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.ssc.2009.09.042
关键词
Ferroelectrics; Domain switching
资金
- Nature Science Associate Foundation (NSAF) of China [10676035]
- Chinese Academic of Science, and Innovation
- Innovation Project Foundation of Chinese Academy of Sciences [KGCXZ-YW-340]
The dependence of a switching current in lead zirconate titanate (PZT) ferroelectric ceramics on the temperature and an applied electrical field was investigated. It was found that temperature has a moderate contribution to the switching current values, but applied electric fields have significant effects on the values. Importantly, a relaxation of switching current on frequency was observed through this method. By a comparison investigation on PZT ceramics of different compositions non-180 degrees domain switching was found to be responsible for the relaxation. A function, the 'active potential of domains' was proposed to interpret the observed results from the viewpoint of energy. The results obtained provide a new understanding of domain process in ferroelectric ceramics that relaxation of domains is a collective motion of non-180 degrees domains. (C) 2009 Elsevier Ltd. All rights reserved.
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