CONSIDERATIONS TO KNOW ABOUT BAGA4SE7 CRYSTAL

′�?, using a frequency of 295 cm−one, is attributed for the stretching vibration of Ga–Se bonds. The 2-phonon absorption on the 295 cm−1 phonon corresponds for the crystal IR absorption edge, rather then the residual absorption peak. Density purposeful principle computations present which the residual absorption of the BGSe crystal origin