Electrical properties of Na1/2Bi1/2TiO3-BaTiO3 ceramics
Electrical properties of Na1/2Bi1/2TiO3-BaTiO3 ceramics
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DOI：
10.1016/s0955-2219(02)00027-4
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发表时间：
2002-12-01
影响因子：
5.7
通讯作者：
Yin, QR
中科院分区：
文献类型：
--
作者：
Chu, BJ;Chen, DR;Yin, QR
研究了具有钙钛矿结构的无铅Na1/2Bi1/2TiO3 BaTiO3压电陶瓷。报道了（1-x）Na1/2Bi1/2TiO3-xBaTiO(3) （x=0.02, 0.04, 0.06, 0.08, 0.10）陶瓷的压电性能，其压电性能在MPB附近达到极值（约x=0.06）。进一步研究了非化学计量和掺杂对（Na1/2Bi1/2）（0.92）Ba0.08TiO3陶瓷结构和压电性能的影响。研究了非化学计量陶瓷和掺杂陶瓷的压电常数与退极化温度的关系。研究发现，在大多数Na1/2Bi1/2TiO3-BaTiO3陶瓷中，它们的退极化温度远低于介电常数曲线的最高温度，并讨论了这一现象的原因。(C) 2002 Elsevier Science Ltd.版权所有。
Lead-free Na1/2Bi1/2TiO3 BaTiO3 piezoelectric ceramics with perovskite structure were studied. The piezoelectric properties of (1-x)Na1/2Bi1/2TiO3-xBaTiO(3) (x=0.02, 0.04, 0.06, 0.08, 0.10) ceramics were reported and their piezoelectric properties reach extreme values near the MPB (about x=0.06). Influences of nonstoichiometry and doping on the structures and piezoelectric properties of (Na1/2Bi1/2)(0.92)Ba0.08TiO3 ceramics were further studied. The relationship between piezoelectric constant and depolarization temperature of nonstoichiometric and doped ceramics was also investigated. It was found that in most of Na1/2Bi1/2TiO3-BaTiO3 ceramics studied, their depolarization temperatures were much lower than maximum temperatures of dielectric constant-temperature curves the origin of this phenomenon was discussed. (C) 2002 Elsevier Science Ltd. All rights reserved.