crystal dynamic and structural study of thorium selenide (thse): elastic behaviour and pressure effect

The present paper is a result of the Endeavour’s dedicated to put in practice a systematic theoretical examination of the phonon dispersion curves, variation of specific heat, two phonon density of states, anhormonic properties and high pressure phase transition study of ThSe by the supplication of TRSM (three-body force shell model) and TRIM (three-body force rigid ion model). It is concluded that our theoretical results predicted by TRSM on phonon dynamics and derivable properties will be very much close to their measured data whenever reported in future. These are probably the first reports of its kind and they will certainly help the experimental workers to analyze their data in future