HIGH-PRESSURE PHASE TRANSITION AND STABILITY OF CeSb, LaSb, AND LuSb WITH NaCl-TYPE STRUCTURE

Abstract

We have predicted the phase transition pressures and corresponding relative volume changes of CeSb , LaSb , and LuSb having NaCl -type structure under high pressure using three-body interaction potential approach (TBIPA) incorporated with short-range van der Walls (vdW) interaction and zero point energy effects. We have obtained phase transition pressures and relative volume changes which are in close agreement with measured values. Thus TBIPA with vdW interaction and zero point energy effects are found to be promising potential models for the prediction of transition pressure and stability of rare-earth compounds.