Abstract
In a polar dielectric occurring under the conditions of large electrothermal loads, it is necessary to take into account the temperature dependence of the conductivity γ(T) and complex permittivity \(\overset{\lower0.5em\hbox{$\smash{\scriptscriptstyle\smile}$}}{l} \). An allowance for this circumstance in the simplest model of the Debye relaxation polarization leads to deviation of the ε″=f(ε′) curve from the well-known Cole-Cole semicircle. Exact solutions of the model problems for a flat capacitor are presented for the cases when the temperature gradient is caused by an external source and by relaxation losses in the dielectric material.
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Translated from Pis’ma v Zhurnal Tekhnichesko\(\overset{\lower0.5em\hbox{$\smash{\scriptscriptstyle\smile}$}}{l} \) Fiziki, Vol. 28, No. 22, 2002, pp. 32–38.
Original Russian Text Copyright © 2002 by Emel’yanov.
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Emel’yanov, O.A. Features of the relaxation polarization of a polar dielectric under conditions of large electrothermal loads. Tech. Phys. Lett. 28, 939–941 (2002). https://doi.org/10.1134/1.1526890
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DOI: https://doi.org/10.1134/1.1526890