Dielectric properties of Pb(Mg1/3Nb2/3)O3-PbTiO3 ceramics modified by Pb(Mg1/3Ta2/3)O3

被引：0
|
作者：
Cao, Lin-Hong [1 ]
Dai, Zhong-Hua
Yao, Xi
Xu, Zhuo
机构：
[1] Xian Jiaotong Univ, Elect Mat Res Lab, Xian 710049, Peoples R China
[2] Southwest Univ Sci & Technol, Key Lab Adv Bldg Mat Sichuan Prov, Sichuan Mianyang 621010, Peoples R China
来源：
FERROELECTRICS | 2007年 / 355卷
关键词：
PMN-PT ceramics; Pb(Mg1/3Ta2/3)O-3; columbite; XRD analysis; dielectric properties;
D O I：
10.1080/00150190701522549
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Ferroelectric 0.8Pb(Mg1/3Nb2/3)O-3-0.2PbTiO(3) ceramics modified by Pb(Mg1/3Ta2/3)O-3 (5, 10 and 20 mol%) were prepared by two-stage columbite method. The phase compositions and dielectric properties for these ceramics were investigated. The results showed that pure perovskite phase were obtained for all the specimens, and the ceramic with 10 mol% Pb(Mg1/3Ta2/3)O-3 substitution has better dielectric properties (epsilon similar to 6500 and epsilon(m) similar to 37000). However, with Pb(Mg1/3Ta2/3)O-3 additives increasing, the frequency dispersion is more obvious, and the degree of dielectric relaxor behavior is increasing.
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页码：252 / 256
页数：5
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