5 SIMPLE TECHNIQUES FOR BAGA4SE7 CRYSTAL

′�?, by using a frequency of 295 cm−1, is attributed towards the stretching vibration of Ga–Se bonds. The two-phonon absorption in the 295 cm−one phonon corresponds towards the crystal IR absorption edge, as opposed to the residual absorption peak. Density purposeful idea computations show that the residual absorption in the BGSe crystal