Sinterable ferroelectric glass-ceramics containing (Sr, Ba)Nb2O6 crystals

被引：43

作者：

Shyu, JJ ^{[1
]}

Chen, CH ^{[1
]}

机构：

[1] Tatung Univ, Dept Mat Engn, Taipei 104, Taiwan

来源：

CERAMICS INTERNATIONAL | 2003年 / 29卷 / 04期

关键词：

sintering; ferroelectric property; glass ceramics; niobates;

D O I：

10.1016/S0272-8842(02)00186-4

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：

The densification, crystallization, and dielectric/ferroelectric properties of a SrO-BaO-Nb2O5-SiO2 glass-ceramic were investigated. Glass-ceramics containing (Sr, Ba)Nb2O6 tungsten bronze as the major crystalline phase can be sintered below 1000 degreesC. The good sinterability is attributed to that the major crystallization process occurred after the sintering of the glass powder compact. The variations of dielectric properties with sintering temperature and test frequency can be explained qualitatively by the amount of SBN phase formed. The maximum dielectric constant at 1 kHz is about 351 for the glass-ceramic sintered at 1000 degreesC. The existence of ferroelectricity is verified for the present glass-ceramic. The values of the remanent polarization and the coercive field are about 0.15 muC/cm(2) and 4.5 kV/cm, respectively, for the glass-ceramic sintered at 1000 degreesC. (C) 2003 Elsevier Science Ltd and Techna S.r.l. All rights reserved.

引用

页码：447 / 453

页数：7

共 28 条

[21] Microstructures and dielectric properties of ferroelectric glass-ceramics [J].