期刊
MATERIALS RESEARCH BULLETIN
卷 68, 期 -, 页码 271-275出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.materresbull.2015.04.004
关键词
Ceramics; Defects; Ferroelectricity; Piezoelectricity
资金
- National Natural Science Foundation of China [11304334]
- Science and Technology Commission of Shanghai Municipality [14DZ2261000]
Stoichiometric Bi2WO6 (BWO) piezoelectric ceramic, with round-shaped grains and a relative density of was prepared by solid state reaction method. The dielectric, resistivity, ferroelectric and piezoelectric properties of BWO were investigated. The dielectric constant and loss show strong frequency dependence with increasing temperature in BWO, which can be attributed to the contribution from the defect dipoles. These defect dipoles have significant effects on the electrical resistivity and polarization electric (P-E) hysteresis loops of unpoled and poled BWO, and also thermal depoling behavior of poled BWO. (C) 2015 Elsevier Ltd. All rights reserved.
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