′�?, using a frequency of 295 cm−1, is attributed on the stretching vibration of Ga–Se bonds. The two-phonon absorption of the 295 cm−1 phonon corresponds to the crystal IR absorption edge, rather than the residual absorption peak. Density purposeful concept computations show the residual absorption from the BGSe crystal originates https://baga4se7crystal31850.free-blogz.com/80036660/top-latest-five-baga4se7-crystal-urban-news