A relation between long-range correlation and dielectric anomaly

被引：0
作者：
Lei Zhang
Weilie Zhong
Chunlei Wang
Yiping Peng
机构：
[1] Shandong University,Department of Physics
来源：
Science in China Series A: Mathematics | 1999年 / 42卷
关键词：
ferroelectrics; multi-site potential; dielectric anomaly; long-range correlation;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
A double-well potential model is established to explain the dielectric anomaly of ferroelectrics. The dielectric constant consists of two parts. One part is independent of the long-range correlation, following 1/T law. The other part originates from the long-range correlation, and can be described by the correlation length well. The deviation from Curie-Weiss law in a small size sample originates from the decrease of the long-range correlation.
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页码：423 / 428
页数：5
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