′�?, using a frequency of 295 cm−1, is attributed on the stretching vibration of Ga–Se bonds. The 2-phonon absorption on the 295 cm−1 phonon corresponds into the crystal IR absorption edge, rather then the residual absorption peak. Density useful concept computations show the residual absorption with the BGSe crystal originates https://devinrxnaa.blogmazing.com/32040284/the-smart-trick-of-baga4se7-crystal-that-nobody-is-discussing