Piezoelectric and dielectric properties of transparent Pb(Ni1/3Nb2/3)1-x-yZrxTiyO3 ceramics prepared by hot isostatic pressing

被引:30
|
作者
Alberta, EF [1 ]
Bhalla, AS [1 ]
机构
[1] Penn State Univ, Mat Res Lab, University Pk, PA 16802 USA
来源
关键词
lead nickel-niobium-zirconium titanate PNN : PZ : PT; morphotropic phase boundary; dielectric properties; pyroelectric properties; piezoelectric properties; transparent ceramics;
D O I
10.1016/S1466-6049(01)00200-8
中图分类号
O61 [无机化学];
学科分类号
070301 ; 081704 ;
摘要
The dielectric, pyroelectric, piezoelectric and optical properties of transparent Pb(Ni1-3Nb2/3)(1-x-y)ZrxTiyO3 (PNNZT) ceramics have been investigated. Hot isostatic pressing was used to achieve uniformly transparent ceramics with optical transmittance of more than 5% at 633 nm. The room temperature dielectric constant of 4200 and a loss of similar to0.025 were measured on these samples. Large electromechanical coupling factors, k(p) = 69%, k(31) = 43%, k(t) = 56%, and k(33) similar to 80%, and large pyroelectric coefficients, 0.2075 li, muC/cm(2) K at room temperature and 2.3819 muC/cm(2) K at 129 degreesC were observed for poled ceramics. Transparent PNNZT ceramics could be promising candidates for many applications such as electrooptics, pyrooptics, and electromechanical transducers/sensors. (C) 2001 Published by Elsevier Science Ltd.
引用
收藏
页码:987 / 995
页数:9
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