Structural phase transition in some disordered binary alloys

The pseudopotential formalism of binary alloys has been used to obtain bind ing energy of some disordered binary alloys by using the linear potential d ue to Sharma and Kachhava along with RPA form of screening function. The al loy potential is treated as the linear combination of the potential of the average lattice and the difference potential. The binding energy of Li-Mg, LI-AI, Al-Mg and In-Mg systems has been computed at different atomic concen trations in three possible phases viz. bcc, fee and hcp. Minimum energy val ues and phases corresponding to these alloys are obtained. The results obta ined show a good agreement with the experimental data as well as with the o ther theoretical results.