′�?, that has a frequency of 295 cm−one, is attributed to the stretching vibration of Ga–Se bonds. The 2-phonon absorption from the 295 cm−one phonon corresponds to the crystal IR absorption edge, rather then the residual absorption peak. Density purposeful concept computations display which the residual absorption of your BGSe https://charlieciifc.blogocial.com/the-smart-trick-of-baga4se7-crystal-that-nobody-is-discussing-68486023