Journal
JOURNAL OF NON-CRYSTALLINE SOLIDS
Volume 358, Issue 1, Pages 1-7Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.jnoncrysol.2011.07.020
Keywords
Complex conductivity; The Jonscher's correction; Fractional derivation; Dielectric permittivity; Porous structures
Funding
- Ministry of Higher Education and Science of the RF [1.84.11]
- RFFR [11-02-00739-a]
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The theoretical generalization of the Jonscher's relationship for the complex conductivity of carriers moving in self-similar medium is derived. It is shown that the correction derived enters to more general expression, which, in turn, we define as the generalized Jonscher's relationship. The basic idea which was used for the derivation of the relationship is based on the supposition that disordered medium has self-similar property. The derived relationship is confirmed on dielectric spectroscopy data related to sodium nitrite embedded to porous glasses. Based on new relationship there is a possibility to extract additional information about relaxation processes of a system of dipoles from the processes related to conductivity. It is important in the cases when the contribution to relaxation peaks is small and unnoticeable on the background of essential domination of processes related to conductivity. (C) 2011 Elsevier B.V. All rights reserved.
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