5 SIMPLE TECHNIQUES FOR BAGA4SE7 CRYSTAL

′�?, with a frequency of 295 cm−one, is attributed into the stretching vibration of Ga–Se bonds. The 2-phonon absorption of the 295 cm−1 phonon corresponds towards the crystal IR absorption edge, instead of the residual absorption peak. Density practical principle computations present which the residual absorption with the BGSe crystal or