High Pressure and Temperature Induced Structural, Elastic and Thermodynamical Properties of Samarium Monochalcogenides Alloy of the Type SmS1-xSex x = 0, 0.11, 0.44, 1

摘要

The pressure and temperature dependent elastic, mechanical and thermal properties of rock salt to CsCl structures in Samarium monochalcogenides SmSl-xSex (x = 0, 0.11, 0.44, 1) are investigated. The enhancement of Young's modulus (E) and Bulk modulus (BT) with increment in doping is an indicator of brittle nature of SmSl-xSex. The compressions in volume of SmSl-xSex (x = 0, 0.11, 0.44, 1) is the indicator of mechanical stiffening in lattice at higher pressure and the thermal expansion of SmSl-xSex at higher temperature shows thermal softening of SmSl-xSex (x = 0, 0.11, 0.44, 1) alloy. From Pugh's and Poisson's ratio we classify SmSl-xSex (x = 0, 0.11, 0.44, 1) as brittle material. The present results are in general in good agreement with experimental data available for the end point members (x = 0 and x = 1).