5 SIMPLE TECHNIQUES FOR BAGA4SE7 CRYSTAL

′�?, which has a frequency of 295 cm−one, is attributed for the stretching vibration of Ga–Se bonds. The 2-phonon absorption of the 295 cm−one phonon corresponds to the crystal IR absorption edge, rather then the residual absorption peak. Density practical idea computations display the residual absorption with the BGSe crystal originates