Effect of pressure and temperature on CaF₂ and ZnO

Simple theory based on the knowledge of Equation of State (EOS) has been developed to study the thermodynamic properties of CaF₂ with fluorite type structure and zinc oxide with wurtzite and rocksalt structure under varying conditions of pressure and temperature. The pressure and temperature dependence of V/V₀, thermal expansivity and isothermal bulk modulus, has been computed. The results are compared with the available experimental data. A good agreement obtained between theory and experiment supports the validity of the present approach. (author)