Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
1461954 | Ceramics International | 2012 | 6 Pages |
Abstract
Lead-free piezoceramics of (1 â x)Ba0.8Sr0.2TiO3-xBiAlO3 [(1 â x)BST-xBA (0 â¤Â x â¤Â 0.12)] have been synthesized and the structures and properties have been investigated systemically. X-ray diffraction patterns indicated that the solid solution limit is close to x = 0.04, and a morphotropic phase boundary (MPB) separating tetragonal and pseudocubic phases exists near x = 0.02. The ferroelectricity weakens monotonously with increasing x, accompanied by weakened butterfly shaped bipolar strain-electric field curves. The temperature dependent properties of the composition with x = 0.02 have been typically investigated, showing that with increasing temperature, the ferroelectricity tends to be weakened. Pure electrostrictive effect has been found in the compositions with x = 0.02 and 0.03 close to room temperature temperature. Based on the results, the effects of BA on structures and electric properties were discussed.
Related Topics
Physical Sciences and Engineering
Materials Science
Ceramics and Composites
Authors
Chong Zhang, Long Jiao, Huajun Kang, Zheng-Bin Gu, Guo-Liang Yuan, Jun Chen, Shan-Tao Zhang,