Structures and temperature-dependent electrical properties in Ba0.8Sr0.2TiO3–BiAlO3 electrostrictive ceramics
作者： Chong Zhang , Long Jiao , Huajun Kang , Zheng-Bin Gu , Guo-Liang Yuan
DOI: 10.1016/J.CERAMINT.2012.04.006
关键词:
摘要: Abstract Lead-free piezoceramics of (1 − x )Ba 0.8 Sr 0.2 TiO 3 – BiAlO [(1 − )BST– BA (0 ≤ ≤ 0.12)] have been synthesized and the structures properties investigated systemically. X-ray diffraction patterns indicated that solid solution limit is close to = 0.04, a morphotropic phase boundary (MPB) separating tetragonal pseudocubic phases exists near = 0.02. The ferroelectricity weakens monotonously with increasing , accompanied by weakened butterfly shaped bipolar strain–electric field curves. temperature dependent composition = 0.02 typically investigated, showing temperature, tends be weakened. Pure electrostrictive effect has found in compositions 0.03 room temperature. Based on results, effects electric were discussed.
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