Abstract:
Features of the spectra of dielectric materials with the range of relaxation times limited from below have been studied. It is established that the dielectric losses (and conductivity) exhibit relaxation at an average frequency that is significantly (up to several orders of magnitude) greater than the permittivity relaxation frequency. These effects are characteristic of both homogeneous materials with non-Debye spectra and inhomogeneous materials of the statistical mixture type near the percolation threshold. A giant enhancement of the permittivity and conductivity in these statistical mixtures takes place at various concentrations of components corresponding to the dielectric-conductor and conductor-dielectric phase transitions.
Fulltext:
PDF file (218 kB)
