ANALYSIS OF PRESSURE DERIVATIVES OF BULK MODULUS AT HIGH COMPRESSIONS USING INTERATOMIC POTENTIAL FUNCTIONS

摘要

We present an analysis for the pressure derivatives of bulk modulus of six solids viz. Ne, Ar, Al, Cu, LiH, and MgO using interatomic potential functions due to Morse, Rydberg, and Davydov. The formulations are obtained using these potential functions. The results for pressure derivatives of bulk modulus are determined as a function of pressure up to a compression of V/V_0 equal to 0.5 for each solid. The results are compared with the corresponding values obtained from the Shanker equation and the Hama-Suito equation of state.