5 SIMPLE TECHNIQUES FOR BAGA4SE7 CRYSTAL

′�?, having a frequency of 295 cm−one, is attributed to the stretching vibration of Ga–Se bonds. The 2-phonon absorption in the 295 cm−1 phonon corresponds on the crystal IR absorption edge, in lieu of the residual absorption peak. Density functional principle computations present which the residual absorption in the BGSe crystal originat