From normal ferroelectric transition to relaxor behavior in Aurivillius ferroelectric ceramics

被引：0
|
作者：
Y. González-Abreu
A. Peláiz-Barranco
J. D. S. Guerra
Y. Gagou
P. Saint-Grégoire
机构：
[1] Facultad de Física-Instituto de Ciencia y Tecnología de Materiales,Department of Sciences and Arts
[2] Universidad de La Habana,undefined
[3] Grupo de Ferroelétricos e Materiais Multifuncionais,undefined
[4] Instituto de Física,undefined
[5] Universidade Federal de Uberlândia,undefined
[6] University of Picardie Jules Verne,undefined
[7] University of Nîmes,undefined
来源：
Journal of Materials Science | 2014年 / 49卷
关键词：
Dielectric Permittivity; Relaxor Behavior; Barium Concentration; Paraelectric Phase Transition; Bismuth Layer;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
The influence of the barium concentration on the dielectric response of Sr1−xBaxBi2Nb2O9 system, with x = 0, 15, 30, 50, 70, 85, 100 at.%, has been studied. The barium concentration dependence of Tm, as well as the temperature of the corresponding maximum for the real part of the dielectric permittivity, has suggested a cation site mixing among atomic positions, which has been supported by the structural analysis. A transition from normal ferroelectric–paraelectric phase transition to a relaxor behavior has been observed in the studied samples, when the barium concentration has increased. The relaxor behavior has been discussed.
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页码：7437 / 7444
页数：7
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