Abstract
The static permittivity of macroscopically homogeneous and isotropic heterogeneous systems is analyzed using the concepts of compact groups of inhomogeneities. The method makes it possible to avoid excessive specification of mutual polarization processes in the system, which ensures effective application of this method for concentrated systems with arbitrary relations between the permittivities of system components. By way of example, the Maxwell-Garnett and Bruggeman formulas for the effective permittivity of heterogeneous matrix systems are reconstructed and their interrelation is analyzed. It is shown that the Bruggeman formula is more limited in the sense that it is based on additional model assumptions concerning the properties of the system and the type of averaging of fields over the volume of the system. Generalizations of these formulas are obtained for multicomponent heterogeneous systems consisting of inhomogeneous nonspherical particles or parts.
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Original Russian Text © M.Ya. Sushko, S.K. Kris’kiv, 2009, published in Zhurnal Tekhnicheskoĭ Fiziki, 2009, Vol. 79, No. 3, pp. 97–101.
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Sushko, M.Y., Kris’kiv, S.K. Compact group method in the theory of permittivity of heterogeneous systems. Tech. Phys. 54, 423–427 (2009). https://doi.org/10.1134/S1063784209030165
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DOI: https://doi.org/10.1134/S1063784209030165