Acoustic velocity and phonon frequencies of Ga <sub>x</sub> In <sub>1−x</sub> Sb alloys under pressure, temperature, and compositions
Elkenany Brens Elkenany
Abstract
Abstract In the present work, we have reported the empirical pseudo-potential method (EPM) based on the virtual crystal approximation (VCA) incorporated the compositional disorder effect (CDE) to study some physical properties of Ga x In 1−x Sb alloys. The dependence of the acoustic velocity and phonon frequencies for the studied alloys with the Ga content has been analyzed. The phonon frequencies and the sound velocity under the effect of pressure and temperature have been determined. The obtained outcomes were generally in very good agreement with the accessible experimental and theoretical data. The acoustic velocity and phonon frequencies of Ga x In 1−x Sb under pressure and temperature have not been fully studied, so, we highlighted the study of this topic. The alloy under investigation could be useful in optoelectronic and photonic materials.