  In the reported study we have investigated the robust phase stability,
elasto-mechanical, thermophysical and magnetic properties of KVSb half Heusler
compound by implementing density functional theory models in Wien2k simulation
package. The dynamic phase stability is computed in phase type I, II & III
phase configurations by optimising their energy. It is observed that given
compound is more stable in spin-polarised state of phase type I. To explore the
electronic band structure, we apply the generalised gradient approximation. The
electronic band profile of the Heusler alloy display a half-metallic nature.
Moreover, the calculated second-order elastic parameters divulge the ductile
nature. To understand the thermodynamical and thermoelectric stability of the
alloy at various temperature and pressures ranges we have utilised the
Quasi-Harmonic Debye model. The computed value of magnetic moment found in good
agreement with Slater-Pauling rule. Our findings confirms that the predicted
half Heusler alloy can be used in various spintronics and thermoelectric
applications.
