Study of two-phase mixtures copper(I) bromide-alumina by impedance spectroscopy

被引：16

作者：

Desvals, MA ^{[1
]}

Knauth, P ^{[1
]}

机构：

[1] UNIV AIX MARSEILLE,FAC SCI ST JEROME,EDIFIS,URA 443,CNRS,F-13397 MARSEILLE 20,FRANCE

来源：

JOURNAL OF PHYSICS AND CHEMISTRY OF SOLIDS | 1997年 / 58卷 / 02期

关键词：

inorganic compounds; interfaces; defects; electrical conductivity;

D O I：

10.1016/S0022-3697(96)00123-0

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Electrical properties of two-phase mixtures of copper(I) bromide and alumina (molar fraction <0.3) were investigated by impedance spectroscopy. The enhancement of electrical conductivity in comparison with pure copper(I) bromide can be interpreted with a 'brick-layer' space charge model. SEM observations confirm globally the presence of continuous layers of alumina particles around grains of the solid ionic conductor. Bulk and short-circuiting 'parallel' pathways are detected in a high-frequency semi-circle. The low-frequency response is essentially due to current path narrowing by 'perpendicular' alumina layers. (C) 1997 Elsevier Science Ltd. All rights reserved.

引用

页码：319 / 324

页数：6

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