′�?, having a frequency of 295 cm−1, is attributed for the stretching vibration of Ga–Se bonds. The 2-phonon absorption from the 295 cm−one phonon corresponds into the crystal IR absorption edge, rather then the residual absorption peak. Density purposeful idea computations demonstrate which the residual absorption of the BGSe crystal https://baga4se7-crystal52852.bloguetechno.com/everything-about-baga4se7-crystal-67808672