′�?, which has a frequency of 295 cm−one, is attributed to the stretching vibration of Ga–Se bonds. The two-phonon absorption of your 295 cm−one phonon corresponds to your crystal IR absorption edge, as an alternative to the residual absorption peak. Density useful principle computations clearly show that the residual absorption https://erickevhse.sharebyblog.com/32514983/considerations-to-know-about-baga4se7-crystal