On The Pressure And Temperature Dependent Ductile, Brittle Nature Of Hg0.91Mn0.09Te Semiconductor

The high-pressure structural phase transition and pressure as well as temperature induced elastic properties of cubic zincblende to rocksalt structures of Hg0.91Mn0.09Te compound have been performed using effective interionic interaction potential with emphasis on charge transfer interactions and covalent contribution. Estimated values of phase transition pressure and the volume discontinuity in pressure-volume phase diagram indicate the structural phase transition from ZnS to NaCl structure. From the investigations of elastic constants the pressure (temperature) dependent volume collapse/expansion, melting temperature T-M, Hardness (H-V), Poisson's ratio v and Pugh ratio phi(= B-T/G(H)) the Hg0.91Mn0.09Te lattice infers mechanical stiffening, thermal softening, and ductile (brittle) nature.