Tunability and relaxor properties of ferroelectric barium stannate titanate ceramics

被引：107

作者：

Lu, SG ^{[1
]}

Xu, ZK ^{[1
]}

Chen, H ^{[1
]}

机构：

[1] City Univ Hong Kong, Dept Phys & Mat Sci, Kowloon, Hong Kong, Peoples R China

来源：

APPLIED PHYSICS LETTERS | 2004年 / 85卷 / 22期

关键词：

D O I：

10.1063/1.1829794

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

Barium stannate titanate [Ba(SnxTi1-x)O-3, x=0.1, 0.2, 0.3, and 0.4] ceramics were prepared using a conventional solid-state reaction process. Their dielectric properties were measured under direct current bias fields ranging from 0 to 2.5 kV/cm. A transformation from normal to relaxor ferroelectrics was observed when xgreater than or equal to0.3. Broken long-range order or "dirty" ferroelectric domains and nanodomains were observed in Ba(Sn0.1Ti0.9)O-3 and Ba(Sn0.4Ti0.6)O-3 by transmission electron microscopy, respectively. Voltage driven tunability was found to decrease with increasing Sn content. The change from normal ferroelectric into relaxor ferroelectric had a negative impact on the tunability value of the materials. (C) 2004 American Institute of Physics.

引用

页码：5319 / 5321

页数：3

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