Morphotropic Phase Boundary of (Bi0.9La0.1)ScO3-PbTiO3 Piezoelectric Ceramics for High-Temperature Application

被引：3

作者：

Yao, Zhonghua ^{[1
]}

Liu, Hanxing ^{[1
]}

Li, Yiqiu ^{[1
]}

Cao, Minghe ^{[1
]}

Hao, Hua ^{[1
]}

机构：

[1] Wuhan Univ Technol, State Key Lab Adv Technol Mat Synth & Proc, Wuhan 430070, Peoples R China

来源：

FERROELECTRICS | 2010年 / 409卷

关键词：

Piezoelectric ceramics; morphotropic phase boundary; dielectric properties; ferroelectrics; curie temperature; PEROVSKITE SYSTEM; (1-X)BISCO3-XPBTIO(3);

D O I：

10.1080/00150193.2010.485886

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

(1-x)(Bi0.9La0.1)ScO3-xPbTiO(3) (x = 0.47 similar to 0.62, BLS-PT100x) were synthesized by conventional solid-state sintering. A morphotropic phase boundary (MPB) between rhombohedral and tetragonal phases was confirmed by X-ray analysis. The materials show a strong composition dependence on the ferroelectric and piezoelectric properties. The composition near MPB can obtain the optimal electrical properties; however, the electrical properties decay obviously over the boundary. The BLS-PT52 ceramics exhibit the enhanced electrical properties: d(33) = 361 pC/N, k(p) = 0.40, P-r = 24.3 mu C/cm(2), E-c = 1.94 kV/mm and an adjustable broad Curie temperature range from 366 to 467 degrees C. These results show that this composition is a promising candidate for high-temperature piezoelectric materials.

引用

页码：21 / 26

页数：6

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