Preparation and properties of neodymium-modified bismuth titanate ceramics

被引：34

作者：

Kan, Yan-Mei ^{[1
]}

Zhang, Guo-Jun ^{[1
]}

Wang, Pei-Ling ^{[1
]}

Cheng, Yi-Bing ^{[2
]}

机构：

[1] Chinese Acad Sci, Shanghai Inst Ceram, State Key Lab High Performance Ceram & Superfine, Shanghai 200050, Peoples R China

[2] Monash Univ Clayton, Sch Phys & Mat Engn, Clayton, Vic 3168, Australia

来源：

JOURNAL OF THE EUROPEAN CERAMIC SOCIETY | 2008年 / 28卷 / 08期

基金：

中国国家自然科学基金;

关键词：

Bi4Ti3O12; powders-chemical preparation; sintering; microstructure-final; electrical properties;

D O I：

10.1016/j.jeurceramsoc.2007.10.010

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：

Neodymium-modified bismuth titanate (BNT) powder with compositions of Bi4-xNdxTi3O12 (x = 0, 0.2, 0.5 and 0.75) were prepared through a hydrolysis method. The influence of Nd addition on the powder characteristics, sintering, microstructure and properties were investigated. It was found that the absorption band of Ti-O stretching vibration at 589 cm(-1) was shifted to a higher wave number in the IR spectra, and the sintering as well as grain growth was significantly retarded. The Curie temperature, dielectric loss and Curie peak intensity were steadily decreased with an increase in Nd concentration, and the dielectric constant and loss tangent became much less dependent on temperature and frequency. At the same time, the polarization properties of the material were greatly improved. (c) 2007 Elsevier Ltd. All rights reserved.

引用

页码：1641 / 1647

页数：7

共 23 条

[1] Layered perovskites with giant spontaneous polarizations for nonvolatile memories [J].