′�?, using a frequency of 295 cm−1, is attributed on the stretching vibration of Ga–Se bonds. The two-phonon absorption in the 295 cm−1 phonon corresponds to the crystal IR absorption edge, instead of the residual absorption peak. Density purposeful concept computations show the residual absorption from the BGSe crystal originates https://trevorsuqkg.blogozz.com/31939056/top-latest-five-baga4se7-crystal-urban-news