′�?, using a frequency of 295 cm−one, is attributed to your stretching vibration of Ga–Se bonds. The two-phonon absorption with the 295 cm−one phonon corresponds on the crystal IR absorption edge, as an alternative to the residual absorption peak. Density practical theory computations show the residual absorption on the BGSe https://sethoeqdp.bloggadores.com/32086022/baga4se7-crystal-can-be-fun-for-anyone