Lattice Dynamics and Thermodynamic Properties of β-ZnS, GaP and β-SiC

Abstract

The lattice dynamics of β-ZnS, GaP and β-SiC has been investigated on the basis of a rigid ion model with seven parameters. Results are obtained for the dispersion curves and effective calorimetric and X-ray Debye temperatures and are shown to compare favourably with the available experimental data. Calculated values of equivalent Debye frequencies are also reported.