′�?, using a frequency of 295 cm−one, is attributed to the stretching vibration of Ga–Se bonds. The 2-phonon absorption of your 295 cm−1 phonon corresponds on the crystal IR absorption edge, as opposed to the residual absorption peak. Density practical principle computations display the residual absorption in the BGSe crystal https://baga4se7-crystal14196.blogofchange.com/33204100/top-latest-five-baga4se7-crystal-urban-news