Theoretical analysis of the impedance spectra of electroceramics - Part 2: isotropic grain boundaries

被引：28

作者：

Bouchet, R. ^{[1
]}

Knauth, P. ^{[1
]}

Laugier, J. -M. ^{[1
]}

机构：

[1] Univ Aix Marseille 1, CNRS, Ctr St Jerome, UMR 6121, F-13397 Marseille 20, France

来源：

JOURNAL OF ELECTROCERAMICS | 2006年 / 16卷 / 03期

关键词：

nanocomposite; nanoceramics; grain boundaries; impedance spectroscopy;

D O I：

10.1007/s10832-006-8278-9

中图分类号：

TQ174 [陶瓷工业]; TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

The grain-size dependence of impedance spectra of electroceramics is simulated, based on a brick layer model with explicit consideration of parallel boundaries. A constant grain interior conductivity is assumed and the grain boundary (gb) conductivity is varied. Parallel and series gb are assumed isotropic, i.e. charge transport along and across gb is supposed identical. Various grain sizes between 500 and 0.5 nm are studied and impedance spectra are shown in complex plane and Bode representations.

引用

页码：229 / 238

页数：10