CONDUCTIVITY ENHANCEMENT AND MICROSTRUCTURE IN AGCL AGI COMPOSITES

被引：31

作者：

LAUER, U

MAIER, J

机构：

[1] Max-Planck-Institut für Festkörperforschung, 7000 Stuttgart 80

来源：

SOLID STATE IONICS | 1992年 / 51卷 / 3-4期

关键词：

D O I：

10.1016/0167-2738(92)90202-Z

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Distinct anomalies of the ionic conductivity are found in the two-phase system AgCl-beta-AgI. Impedance spectroscopy and mi-crostructure reveal that the conduction pathways consist of homo-(AgCl/AgCl or beta-AgI/beta-AgI) as well as hetero-(AgCl/beta-AgI) contacts both exhibiting enhanced sigma-values. Particularly the analysis of the activation enthalpy indicates vacancy conduction in the interfacial regions. The effects are discussed in terms of the quantitative space charge model given previously.

引用

页码：209 / 213

页数：5

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