Dielectric response of polar materials

The proposed approach is based on the unique property that the ratio of the real to the imaginary parts of the susceptibility or of the polarization decrement are independent of frequency in the respective frequency ranges. The resulting energy criterion is discussed, and a screened polarization model and mechanical relaxation model are developed and applied to dipolar spectra both below and above the loss peak frequency. A discussion is presented of the implications for the understanding of the physical nature of loss in dipolar materials within a framework which has applicability to a wide range of polarization processes. Given the inevitable connection between the energy criterion and the fractional power laws, the question of which is the primary cause and which the consequence is discussed