A simple model of structural disorder in III–V quaternary alloys Original Research Article

A model is proposed describing the bond length and bond-bending angle distributions in quaternary A3B5 alloys with ZB structure in quasi-continuum approximation. The model allows to consider reasonably large crystal lattice clusters employing minimum computing resources. Analytical expressions are derived for the radial distribution functions. The developed approach is applied to the analysis of available experimental data on structural disorder in III–V alloys. Employing the valence force field Keating model the deformation energy for several alloys is evaluated.