′�?, by using a frequency of 295 cm−1, is attributed on the stretching vibration of Ga–Se bonds. The two-phonon absorption in the 295 cm−one phonon corresponds to your crystal IR absorption edge, as an alternative to the residual absorption peak. Density practical theory computations exhibit that the residual absorption with https://andyossqm.blogthisbiz.com/39488604/rumored-buzz-on-baga4se7-crystal