Mixed temperature and pressure derivative of isothermal bulk modulus for Debye like solid

In the present paper we propose three relationships to predict the values of the mixed temperature and pressure derivative of isothermal bulk modulus (∂2KT/∂P∂T) at zero pressure based on different assumptions. It is found that (∂2KT/∂P∂T) changes linearly with increase in temperature above Debye temperature at zero pressure. The relationships developed in this study are applied to MgO and the predicted values of (∂2KT/∂P∂T) compare favorably with the experimental results.

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