5 SIMPLE TECHNIQUES FOR BAGA4SE7 CRYSTAL

′�?, using a frequency of 295 cm−one, is attributed for the stretching vibration of Ga–Se bonds. The two-phonon absorption with the 295 cm−1 phonon corresponds to the crystal IR absorption edge, as an alternative to the residual absorption peak. Density functional idea computations demonstrate the residual absorption in the BGSe crystal o