Study of Polarizability on EuO under High Pressure

Abstract

We have investigated the pressure volume relationship, pressure induced structural phase transformation and elastic behaviour in Europium oxide (EuO) compound .We are using two different potential models (i) improved interaction potential model (IIPM) which includes Coulomb interaction, three body interaction, Polarizability effect and Overlap repulsive interactions.(ii) interaction potential model (IPM) which excluded Polarizability effect in the previous model. The EuO compound transformed from B1-B2 phase under pressure Pt =40.5 and equation of state shows volume collapse of 10.52%. The results are in good agreements with the available experimental data. The second order elastic constants and thermophysical properties like force constant, Debye temperature; Gruneisen parameter and ratio of thermal expansion to specific heat have also been computed at normal and high pressures.