′�?, using a frequency of 295 cm−1, is attributed for the stretching vibration of Ga–Se bonds. The 2-phonon absorption of your 295 cm−one phonon corresponds on the crystal IR absorption edge, rather then the residual absorption peak. Density purposeful principle computations demonstrate that the residual absorption in the BGSe crystal https://lanemdqco.kylieblog.com/33351528/5-simple-techniques-for-baga4se7-crystal