′�?, having a frequency of 295 cm−one, is attributed on the stretching vibration of Ga–Se bonds. The two-phonon absorption in the 295 cm−one phonon corresponds to the crystal IR absorption edge, rather then the residual absorption peak. Density practical idea computations present the residual absorption of your BGSe crystal originates https://baga4s7crystal25678.bloggerchest.com/32677107/baga4se7-crystal-an-overview