′�?, that has a frequency of 295 cm−one, is attributed towards the stretching vibration of Ga–Se bonds. The two-phonon absorption in the 295 cm−1 phonon corresponds into the crystal IR absorption edge, rather than the residual absorption peak. Density purposeful concept computations display which the residual absorption in the BGSe https://baga4se7-crystal29527.blogmazing.com/31718443/5-simple-techniques-for-baga4se7-crystal