Phase structure and piezoelectric properties of high Curie temperature BiYbO3-PbTiO3-BaTiO3 ceramics

被引：29

作者：

Gao Feng ^{[1
]}

Hong Rongzi ^{[1
]}

Liu Jiaji ^{[1
]}

Li Zhen ^{[1
]}

Cheng Lihong ^{[1
]}

Tian Changsheng ^{[1
]}

机构：

[1] Northwestern Polytech Univ, Coll Mat Sci & Engn, Xian 710072, Peoples R China

来源：

JOURNAL OF ALLOYS AND COMPOUNDS | 2009年 / 475卷 / 1-2期

关键词：

Piezoelectric ceramics; Curie temperature; Pyrochlore phase; Electrical properties; DIELECTRIC-PROPERTIES; SYSTEM; (1-X)BISCO3-XPBTIO(3);

D O I：

10.1016/j.jallcom.2008.07.116

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Perovskite (1 -x)(0.1BiYbO(3)-0.9PbTiO(3))-xBaTiO(3) (BYPT-BT) ceramics were prepared by the conventional processing. The effect of BaTiO3 on the microstructure and piezoelectric properties was investigated. The results show that the perovskite phase and the Yb2Ti2O7 pyrochlore phase are coexisting in the BYPT-BT ceramics. BaTiO3 influences the lattice structure and Ba2+ will replace A-site ions of perovskite, which decreases the lattice constant ratio c/a, leading to the lattice distortion. With increasing BaTiO3 content, the percentage of pyrochlore phase decreases, which resulted in the increase of the dielectric constant E and the piezoelectric constant d(33). BYPT-BT ceramics with the high Curie temperatures of > 500 degrees C are obtained. And BYPT-BT4 ceramics with 0.12 mol BaTiO3 has the optimal piezoelectric properties, epsilon is 720, tan delta is 0.013, d(33) is 34 pC/N, T-C is 505 degrees C. (C) 2008 Elsevier B.V. All rights reserved.

引用

页码：619 / 623

页数：5

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