′�?, having a frequency of 295 cm−1, is attributed into the stretching vibration of Ga–Se bonds. The 2-phonon absorption of the 295 cm−one phonon corresponds on the crystal IR absorption edge, rather than the residual absorption peak. Density useful idea computations present which the residual absorption of your BGSe crystal https://baga4se7-crystal62849.rimmablog.com/32046162/baga4se7-crystal-can-be-fun-for-anyone