Analysis of temperature and isobaric volume expansion dependence of elastic moduli of solids

Thermo-elastic properties of solids at high temperature can be understood adequately by knowing the temperature dependences of their elastic moduli. It has been found that there exists a precise relationship showing exponential dependence of their elastic moduli on isobaric volume expansion for some typical solids such as NaCl, KCL, MgO, and CaO at high temperatures. We have calculated the values of elastic moduli C11C11, C44C44, CS,KSCS,KS, and KTKT at different temperatures for the solids under study. The calculated values of elastic moduli are found to show fairly good agreement with available experimental data.