Anomalous power law dispersions in ac conductivity and permittivity shown to be characteristics of microstructural electrical networks

被引：148

作者：

Almond, DP ^{[1
]}

Bowen, CR ^{[1
]}

机构：

[1] Univ Bath, Mat Res Ctr, Dept Engn & Appl Sci, Bath BA2 7AY, Avon, England

来源：

PHYSICAL REVIEW LETTERS | 2004年 / 92卷 / 15期

关键词：

D O I：

10.1103/PhysRevLett.92.157601

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

The frequency dependent ac conductivity and permittivity of porous lead zirconate titanate ceramic with the pore volume filled with water are shown to match the simulated electrical response of a large network of randomly positioned resistors and capacitors. Anomalous power law dispersions in conductivity and permittivity are shown to be an electrical response characteristic of the microstructural network formed by the porous lead zirconate titanate pore structure. The anomalous power law dispersions of a wide range of materials are also suggested to be microstructural network characteristics.

引用

页码：157601 / 1

页数：4

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