Monte Carlo and lattice-dynamics studies of the thermal and elastic properties of a rigid-ion model of sodium chloride

Abstract
We have calculated the thermodynamic properties and elastic constants of a rigid-ion model of sodium chloride, at zero pressure, using a combination of Monte Carlo simulations at high temperatures (3001050 K) and anharmonic perturbation theory at low temperatures. While the results were intended as a benchmark for the simple model we have used, the agreement with experiment is remarkably good.