Tailoring the structure and piezoelectric properties of BiFeO3-(K0.5Bi0.5)TiO3-PbTiO3 ceramics for high temperature applications
Tailoring the structure and piezoelectric properties of BiFeO3-(K0.5Bi0.5)TiO3-PbTiO3 ceramics for high temperature applications
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DOI：
10.1063/1.4824652
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发表时间：
2013-10-07
影响因子：
4
通讯作者：
Comyn, T. P.
中科院分区：
文献类型：
--
作者：
Bennett, J.;Bell, A. J.;Comyn, T. P.
There is a growing requirement for piezoelectric materials and systems which can operate in extreme environments, for example, oil & gas, and aerospace. Here, we present the high temperature BiFeO3-K0.5Bi0.5TiO3-PbTiO3 (BF-KBT-PT) polycrystalline perovskite system. X-ray diffraction, impedance analysis, and Berlincourt measurements reveal a large region of phase coexistence, which can be tailored to optimise performance; T-c and the tetragonal spontaneous strain correlate strongly with the PbTiO3 concentration. The highest temperature composition has a d(33) of 140 pmV(-1) with a T-c = 542 degrees C, occupying previously unchartered territory on the classical d(33)-T-C plot. (C) 2013 AIP Publishing LLC.
