Equations for the conductivity of macroscopic mixtures
- 30 March 1986
- journal article
- Published by IOP Publishing in Journal of Physics C: Solid State Physics
- Vol. 19 (9) , 1339-1354
- https://doi.org/10.1088/0022-3719/19/9/007
Abstract
Two equations which describe the conductivity (resistivity) of a wide variety of binary macroscopic conducting mixtures as a function of the conductivity of the components, the volume fraction of each, the space dimension and a single parameter are presented. These equations are interpolations between Bruggeman's symmetric- and asymmetric-effective-media theories. The parameter, possibly a fractal dimension, is determined from a critical composition; for example, in a metal-perfect-insulator mixture it is the metal-insulator transition point. Good agreement is found with a wide range of experimental data.Keywords
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