Thermodynamic Approximations in High‐pressure and High‐Temperature Physics of Solids

Abstract

Abstract A number of useful thermodynamic approximations of wide applicability for describing high‐pressure and high‐temperature behaviour of solids are discussed with particular emphasis on the origin and equivalence of such approximations. Calculations of various thermodynamic quantities for NaCl crystals are performed and compared with available experimental data to demonstrate the usefulness of the approximations considered.