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_xIn_1−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 Ga_xIn_1−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.

在目前的工作中，我们报告了基于虚拟晶体近似 (VCA) 的经验赝势法 (EPM)，并结合了成分无序效应 (CDE) 来研究 Ga _x In _1-x Sb 合金的一些物理性质。分析了所研究合金的声速和声子频率与 Ga 含量的相关性。声子频率和声速在压力和温度的影响下已经确定。获得的结果通常与可获得的实验和理论数据非常吻合。Ga _x In _{1−x 的}声速和声子频率压力和温度下的 Sb 尚未得到充分研究，因此，我们重点研究了这一主题。正在研究的合金可用于光电和光子材料。