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The Formation of New Critical System by Electric Breakdown in Percolation System

Published online by Cambridge University Press:  28 February 2011

V.A. Garanov
Affiliation:
Institute of High Temperatures, USSR Academy of Sciences, Izhorskaya ul 13/19,Moscow 127412, USSR
A.A. Kalachev
Affiliation:
Institute of High Temperatures, USSR Academy of Sciences, Izhorskaya ul 13/19,Moscow 127412, USSR
A.M. Karimov
Affiliation:
Institute of High Temperatures, USSR Academy of Sciences, Izhorskaya ul 13/19,Moscow 127412, USSR
A.N. Lagar´kov
Affiliation:
Institute of High Temperatures, USSR Academy of Sciences, Izhorskaya ul 13/19,Moscow 127412, USSR
S.M. Matitsin
Affiliation:
Institute of High Temperatures, USSR Academy of Sciences, Izhorskaya ul 13/19,Moscow 127412, USSR
A.B. Pakhomov
Affiliation:
A.F.Ioffe Physical Technical Institute, USSR Academy of Sciences, Polytechnicheskaya ul 26, Leningrad 194021, USSR
B.P. Peregood
Affiliation:
A.F.Ioffe Physical Technical Institute, USSR Academy of Sciences, Polytechnicheskaya ul 26, Leningrad 194021, USSR
A.K. Sarychev
Affiliation:
Institute of High Temperatures, USSR Academy of Sciences, Izhorskaya ul 13/19,Moscow 127412, USSR
A.P. Vinogradov
Affiliation:
Institute of High Temperatures, USSR Academy of Sciences, Izhorskaya ul 13/19,Moscow 127412, USSR
A.M. Virnik
Affiliation:
Institute of High Temperatures, USSR Academy of Sciences, Izhorskaya ul 13/19,Moscow 127412, USSR
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Abstract

A new way of obtaining binary composite materials having some properties of the critical percolation system is presented..These materials can be obtained by high-density current action on an initially well conducting mixture.This action destroys part of contacts between adjacent conducting granules bringing the system to the quasi-critical state.It is shown that quasi-critical s stems may have high values of dielectric constant ε′ ∼ 102-106 101 in the frequency range 0<f<1010Hz.Formation and dielectric properties of the systems are studied both by computer simulation and experi mentally.

Type
Research Article
Copyright
Copyright © Materials Research Society 1990

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References

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