5 SIMPLE TECHNIQUES FOR BAGA4SE7 CRYSTAL

′�?, that has a frequency of 295 cm−one, is attributed on the stretching vibration of Ga–Se bonds. The 2-phonon absorption from the 295 cm−1 phonon corresponds to the crystal IR absorption edge, as opposed to the residual absorption peak. Density purposeful concept computations show the residual absorption with the BGSe crystal originates