Preparation and ferroelectric properties of strontium barium bismuth tantalate ceramics
作者:
Chung-Hsin Lu,
Jia-Hau Bai,
期刊:
Integrated Ferroelectrics
(Taylor Available online 1999)
卷期:
Volume 26,
issue 1-4
页码: 57-64
ISSN:1058-4587
年代: 1999
DOI:10.1080/10584589908215610
出版商: Taylor & Francis Group
关键词: ferroelectrics;preparation;strontium;barium;bismuth;tantalate
数据来源: Taylor
摘要:
The preparation and ferroelectric properties of layered ferroelectric barium-doped SrBi2Ta2O9were investigated in this study. Pure layered perovskites were successfully synthesized when the mixed reactants were heated up to 900°C. The formation of solid solutions of barium-doped SrBi2Ta2O9were confirmed. The addition of barium cations was found to substantially improve the sinterability of SrBi2Ta2O9, and resulted in densified specimens at low sintering temperatures. The degree of c-axis preferred orientation of the sintered specimens also increased with the increase in the barium content in SrBi2Ta2O9. This variation in the c-axis orientation was related to the morphological change of the grains in barium-doped SrBi2Ta2O9. The barium-doped specimens exhibited well saturated P-E loops and high remanent polarization.
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