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Percolation properties of cellular composite systems

Published online by Cambridge University Press:  17 March 2011

C. Chiteme and
D.S. McLachlan
C. Chiteme
Affiliation:
School of Physics and Material Physics Institute, University of the Witwatersrand, Private Bag 3, Wits 2050, Johannesburg, South Africa.
D.S. McLachlan
Affiliation:
School of Physics and Material Physics Institute, University of the Witwatersrand, Private Bag 3, Wits 2050, Johannesburg, South Africa.
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Abstract

Percolation phenomena were studied in a series of six composites with a cellular structure. Measurements made on the composites include dc and ac electrical conductivity, dielectric constant, 1/for flicker noise and magnetoresistance. Results arising from these extensive measurements were fitted to the percolation power laws and a phenomenological equation to give various exponents, which are presented, discussed and compared.

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