Structural, elastic, electronic and lattice dynamical properties of III-P quaternary alloys matched to AlP

We report a detailed study of the compositional dependence of the structural, elastic, electronic and dynamical properties of the In1−x−yAlxGayPIn1−x−yAlxGayP quaternary alloys matched to AlP using pseudo-potential plane-wave method based on the density functional theory. The reliability and accuracy of the predicted physical properties mentioned above for In1−x−yAlxGayP/AlPIn1−x−yAlxGayP/AlP are tested by comparing the calculated lattice constant, elastic constants and phonon dispersion curves for the binary AlP with the available experimental and theoretical data in the literature.