Effect of calcium on the piezoelectric and dielectric properties of Sm-modified PbTiO3 ceramics

被引：28

作者：

Chu, SY ^{[1
]}

Chen, CH ^{[1
]}

机构：

[1] Natl Cheng Kung Univ, Dept Elect Engn, Tainan 70101, Taiwan

来源：

SENSORS AND ACTUATORS A-PHYSICAL | 2001年 / 89卷 / 03期

关键词：

calcium doping; piezoelectric; dielectric; modified PbTiO3;

D O I：

10.1016/S0924-4247(00)00536-7

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

In this paper, effects of calcium dopants on the piezoelectric and dielectric properties of Sm-modified lead titanate (PbTiO3) ceramics have been investigated. Sm-modified PbTiO3 ceramics with a composition of (Pb0.88-xCaxSm0.08)(Ti0.98Mn0.02)O-3; x = 0.11-0.17 were prepared by conventional mixed-oxide methods with sintering temperature at 1200 degreesC. We successfully showed that Ca additive is helpful to obtain much higher thickness electromechanical coupling coefficient, k(t) (> 0.57), than that of conventional PbTiO3 based ceramics and still keep small planar electromechanical coupling coefficient, k(p). Microstructural and compositional analyses of these doped ceramics have been carried out using X-ray diffractometer (XRD) and scanning electron microscope (SEM). (C) 2001 Elsevier Science B.V. All rights reserved.

引用

页码：210 / 214

页数：5

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