′�?, that has a frequency of 295 cm−1, is attributed into the stretching vibration of Ga–Se bonds. The 2-phonon absorption on the 295 cm−one phonon corresponds on the crystal IR absorption edge, as an alternative to the residual absorption peak. Density useful idea computations exhibit that the residual absorption of https://baga4se7-crystal64074.fireblogz.com/63793112/baga4se7-crystal-can-be-fun-for-anyone