′�?, having a frequency of 295 cm−one, is attributed towards the stretching vibration of Ga–Se bonds. The 2-phonon absorption with the 295 cm−1 phonon corresponds to your crystal IR absorption edge, rather than the residual absorption peak. Density purposeful principle computations demonstrate that the residual absorption of your BGSe crystal https://baga4se7crystal05048.get-blogging.com/33281890/everything-about-baga4se7-crystal