THERMAL-EXPANSION, MOLAR VOLUME AND SPECIFIC-HEAT OF DIAMOND FROM 0 TO 3000K

Thermal expansion is of both practical and theoretical importance and it together with specific heat is essential for predicting a thermodyn amic equation of state. We utilize a semi-empirical quasi-harmonic mod el to evaluate available data for diamond. The model allows us to pred ict the thermal properties of the metastable diamond polymorph to 3000 K. The approach consisting of a simplified frequency spectrum with sev eral Einstein terms provides a convenient mathematical method where a minimum of empirical parameters represent the thermal property.