Atomistic study of zinc-blends CdS, CdSe, ZnS, and ZnSe from molecular dynamics

Empirical interatomic potential parameters are determined for group semicon ductors such as CdS, CdSe, ZnS, and ZnSe. The structural properties of zinc -blende CdS, CdSe, ZnS, and ZnSe are calculated. A good agreement between t he calculated and experimental values of the lattice constant, the cohesion energy, and bulk modulus and its derivative are obtained. The versality of these empirical potential parameters is confirmed by the calculation of el astic constants for CdS, CdSe, ZnS, and ZnSe. We have used the molecular-dy namics methods for the calculations of the thermal expansion and heat capac ity. The results compare well with available results. (C) 2000 Elsevier Sci ence S.A. All rights reserved.