′�?, that has a frequency of 295 cm−1, is attributed for the stretching vibration of Ga–Se bonds. The 2-phonon absorption on the 295 cm−one phonon corresponds into the crystal IR absorption edge, as opposed to the residual absorption peak. Density practical theory computations exhibit which the residual absorption of the https://andyotrsq.ageeksblog.com/31500615/top-guidelines-of-baga4se7-crystal