High Pressure and high temperature study of nanocrystalline foresterite
Neetu Sorot, Jeewan Chandra, Kuldeep Kholiya and B. R. K. Gupta
In the present study we have analysed elastic properties of nanocrystalline foresterite under high pressure and high temperature using equation of state model. Relative volume change (V/Vo), bulk modulus and coefficient of volume thermal expansion under temperature range 300–1573 K and pressure range 0–9.6 GPa are studied for nanocrystalline foresterite. Our calculated results of Volume change under different pressure and temperature are compared with available experimental data. An excellent agreement is found between our calculated values and experimental data. We also extended our approach to study the variation of bulk modulus and volume thermal expansion with pressure under different temperature range for nanocrystalline foresterite. Our calculated results for high-pressure high-temperature behaviour of bulk modulus and the coefficient of volume thermal expansion are consistent with the general trend.
Keywords: Equation of state, Volume change, bulk modulus, thermal expansion