AN EQUATION FOR THE CONDUCTIVITY OF BINARY-MIXTURES WITH ANISOTROPIC GRAIN STRUCTURES

被引：296

作者：

MCLACHLAN, DS ^{[1
]}

机构：

[1] UNIV WITWATERSRAND,CONDENSED MATTER RES GRP,JOHANNESBURG 2001,SOUTH AFRICA

来源：

JOURNAL OF PHYSICS C-SOLID STATE PHYSICS | 1987年 / 20卷 / 07期

关键词：

FILMS - Metallic - POWDER METALLURGY;

D O I：

10.1088/0022-3719/20/7/004

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

An equation is presented which describes the conductivity (resistivity) of a wide variety of binary macroscopic mixtures as a function of the conductivities (resistivities) of the components, the volume (area) fraction of each, and two parameters. Unlike in an earlier version, the granular shape of at least one component in no longer required to be roughly spherical (circular). One parameter is the critical volume (area) fraction. The other, the exponent, is a combination of effective demagnetization coefficients and the critical fraction. The equation, which is valid for all volume fractions, is shown to fit a variety of experimental data very well. Some deductions about the shape of the grains in the media can be made by analyzing the experimental results.

引用

页码：865 / 877

页数：13

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