Influence of Composition on Mechanical Properties and Sound Speed of AlAs_1−xP_x for Various Pressures

The mechanical properties of AlAs 1−x P x alloy under the influence of composition have been determined. The sound speed of AlAs 1−x P x has been determined at various compositions. The studied properties were obtained with the effect of composition at various pressures. The predicted values were consistent with the available experimental results. The investigation used empirical method calculations based on empirical pseudo potential theory (EPM) with the virtual crystal approximation (VCA) to broaden the applications of ternary alloys and better investigate their potential as novel materials. AlAs 1−x P x is a material that shows promise for usage in multi-junction solar cell designs because its properties can potentially be adjusted. The mechanical stability of AlAs 1−x P x alloys was obtained according to these conditions C 11 + 2C 12 > 0, C 44 > 0, and C 11 -C 12 > 0. The obtained anisotropy factor was not equal to 1, indicating the presence of elastic anisotropy in the studied alloy in the applied composition range. The AlAs 1−x P x alloy is a ductile material throughout the entire composition range at various pressures due to the B u /C s values exceeding 1.75.