′�?, having a frequency of 295 cm−one, is attributed into the stretching vibration of Ga–Se bonds. The 2-phonon absorption in the 295 cm−1 phonon corresponds to your crystal IR absorption edge, as opposed to the residual absorption peak. Density practical concept computations present that the residual absorption of the BGSe https://baga4se7crystal41627.azzablog.com/32795384/baga4se7-crystal-an-overview