Structural and dielectric properties of (Na0.5Bi0.5)0.70Ba0.30TiO3 ceramics

被引：119

作者：

Suchanicz, J

Kusz, J

Böhm, H

Duda, H

Mercurio, JP

Konieczny, K

机构：

[1] Pedag Acad, Inst Phys, PL-30084 Krakow, Poland

[2] Silesian Univ, Inst Phys, PL-40007 Katowice, Poland

[3] Univ Mainz, Inst Geowissensch, D-55099 Mainz, Germany

[4] Univ Limoges, Fac Sci, F-7060 Limoges, France

来源：

JOURNAL OF THE EUROPEAN CERAMIC SOCIETY | 2003年 / 23卷 / 10期

关键词：

actuators; dielectric properties; (Na; Bi; Ba)TiO3; perovskites; sintering; X-ray methods;

D O I：

10.1016/S0955-2219(02)00406-5

中图分类号：

TQ174 [陶瓷工业]; TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

A (Na0.5Bi0.5)(0.70)Ba0.30TiO3 ceramic has been studied by X-ray diffraction and by measurements of dielectric and ferroelectric properties between room temperature and 450 degreesC. A sharp increase in the electric permittivity and dielectric loss near 200 degreesC has been observed. This sharp increase in dielectric responses indicates a transformation between normal and relaxor ferroelectric states. It is found that polar regions can exist at higher temperatures. The X-ray diffraction study shows that the transformation corresponds to the first order phase transition from tetragonal to cubic. The use of the (Na0.5Bi0.5)(0.70)Ba0.30TiO3 ceramic for device application has also been indicated. (C) 2003 Elsevier Science Ltd. All rights reserved.

引用

页码：1559 / 1564

页数：6

共 23 条

[1] Lead-free high-strain single-crystal piezoelectrics in the alkaline-bismuth-titanate perovskite family [J].