Study of thermodynamic properties of cerium dioxide under high pressures

Abstract

The statistical moment method (SMM) is used to study the thermodynamic quantities of the cubic fluorite cerium dioxide talking into account the anharmonicity effects of the lattice vibrations and hydrostatic pressures. The thermodynamic quantities of CeO2 are calculated as a function of the pressure. The SMM calculations are performed by using the Buckingham potential for the cerium dioxide. The effects of the three different potential parameter sets of the Buckingham potential on some thermodynamic properties for CeO2 are also investigated. © 2010 Elsevier B.V. All rights reserved.