Acoustic velocity and phonon frequencies of GaxIn1-xSb alloys under pressure, temperature, and compositions

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 GaxIn1-xSb 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 GaxIn1-xSb 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.

Automated summary

This research utilized the empirical pseudo-potential method based on the virtual crystal approximation and incorporated the compositional disorder effect to study the physical properties of GaxIn1-xSb alloys. The study found the dependence of acoustic velocity and phonon frequencies on the Ga content, and also analyzed their behavior under pressure and temperature.