Study of Ag/ZnO composite material by universal power law

被引：6

作者：

Yin Gui-Lai ^{[1
]}

Li Jian-Ying ^{[1
]}

Li Sheng-Tao ^{[1
]}

机构：

[1] Xi An Jiao Tong Univ, State Key Lab Elect Insulat & Power Equipment, Xian 710049, Peoples R China

来源：

ACTA PHYSICA SINICA | 2009年 / 58卷 / 06期

基金：

芬兰科学院; 中国国家自然科学基金;

关键词：

universal power law; dielectric property; ZnO; ELECTRICAL-PROPERTIES; CONDUCTIVITY; RELAXATION; AG; SPECTRA; BORATE;

D O I：

10.7498/aps.58.4219

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

The dielectric properties of Ag/ZnO composite material are investigated and a strong low-frequency dispersion phenomenon is found. The experimental results are systematically studied in the frequency range of 0.1-10(7) Hz and in the temperature range of 173-473 K. By means of normalization of conductivity, it is found that samples with different Ag contents show similar mechanism of dielectric loss, which is suggested as electron jumping between deep levels. In addition, it is also found that the dependence of E-1 mA on Ag content is similar to that of alpha(If) on Ag content, which is a novel result in the research of varistor materials. The results can be fully understood by means of universal power law.

引用

页码：4219 / 4224

页数：6

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