′�?, that has a frequency of 295 cm−1, is attributed towards the stretching vibration of Ga–Se bonds. The 2-phonon absorption in the 295 cm−1 phonon corresponds for the crystal IR absorption edge, as opposed to the residual absorption peak. Density purposeful concept computations exhibit that the residual absorption from the https://baga4se7-crystal81234.blogprodesign.com/54042968/baga4se7-crystal-an-overview