Compression dependence of αKT for ionic solids

In the present study, the compression dependence of αKT is analyzed using Anderson-Isaak equation along with Stacey's equation of state for ionic solids such as NaCl and MgO. It is found that the value of αKT decreases with increasing compression and attains a minimum, after which it increases with increasing compression along an isotherm. It is also found that αKT tends to infinity as P→∞ or V→0. The presented nature of αKT is valuable to understand the thermoelastic and thermodynamic properties of MgO and NaCl at high compressions and at high temperatures.