Temperature dependence of thermal pressure for NaCl and KCl crystals

In the present study we proposed the empirical relationships for temperature dependence of thermal pressure at atmospheric pressure for NaCl and KCl solids. It is found that the thermal pressure is a complex function of temperature and deviates from linearity in high-temperature region. The temperature dependence of volume expansion ratio is also established with the help of the thermal pressure. A close agreement between theory and experiment reveals the validity of the present work.