′�?, that has a frequency of 295 cm−1, is attributed towards the stretching vibration of Ga–Se bonds. The 2-phonon absorption of the 295 cm−1 phonon corresponds on the crystal IR absorption edge, rather than the residual absorption peak. Density practical concept computations present which the residual absorption from the BGSe https://baga4se7crystal20752.thelateblog.com/33308930/5-tips-about-baga4se7-crystal-you-can-use-today