′�?, which has a frequency of 295 cm−one, is attributed to the stretching vibration of Ga–Se bonds. The 2-phonon absorption with the 295 cm−one phonon corresponds for the crystal IR absorption edge, as opposed to the residual absorption peak. Density practical principle computations present that the residual absorption of the https://beauqvxws.collectblogs.com/77732672/considerations-to-know-about-baga4se7-crystal