Analysis of temperature dependence of thermal pressure and thermoelastic properties of MgO

In the present paper, the thermal pressure for the MgO is evaluated from room temperature to 3000 K at atmospheric pressure with the help of data suggested by Jacobs and Oonk. Various relationships between thermal pressure and volume expansion ratio are examined. Thermoelastic properties viz. C11, C44, CS, and KS are calculated at high temperatures for the solid under study, with the help of Murnaghan and Tallon models. Predicted values of thermoelastic properties at higher temperatures can be used to understand the high-temperature behavior of MgO at 1 bar pressure.