Dispersion of dielectric permittivity due to space-charge polarization

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Abstract
A method has been developed for calculating the effective complex permittivity of a solid dielectric arising from the motion of charge carriers which are blocked at the electrodes. The method makes use of computer simulation of the motion of the charge carriers and is valid for high voltages. Results are given of calculations carried out for a simple model with charge carriers of only one sign mobile. Diffusion effects are neglected. The effective complex permittivity is then found to depend on only two parameters. The dielectric dispersion is found to exhibit a well-defined loss peak whose frequency can, show a strong voltage dependence.