Thermodynamic Properties of Pyrope under the Effect of High Temperatures and Pressure

The study of elasticity of the earth materials is of great interest for the geophysics. Earlier several attempts have been made to study the thermodynamic properties such as thermal expansivity and bulk modulus of solids under the effect of high temperatures. Thermal expansivity and bulk modulus are important thermodynamic quantities for understanding the high temperature behaviour and the equation of state for solids. To understand the thermodynamic and thermoelastic behaviour of solids at high temperature, it is necessary to have reliable value of thermal expansivity and isothermal bulk modulus along with the value of Anderson-Gruneisen parameter and the thermal pressure for the range of temperatures from room temperature to the melting temperature. The present work analysed temperature dependence of isothermal bulk modulus and thermal expansivity in terms of Anderson-Gruneisen parameter and the thermal pressure for Pyrope. The analysis is based on the thermodynamic and thermoelastic data reported by Anderson.