The earlier proposed single statistical model of a condensed molecular system with pair-wise interaction of molecules described by the intermolecular Lennard-Jones potential was applied. In using an analytical expression for the addition to the vibrational specific heat of a perfect crystal, in which the presence of thermal vacancies under real conditions was taken into account, numerical calculations were carried out and an analysis of the results obtained was made.

Molecular-Statistical Description of the Specific Heat of Crystals with Thermal Vacancies 2. Numerical Calculations of the Contribution of the Vacancy Subsystem to the Lattice Specific Heat of Crystals. E.V.Farafontova, I.I.Narkevich: Journal of Engineering Physics and Thermophysics, 2011, 84[3], 689-94