The best Side of BaGa4Se7 Crystal
′�?, which has 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 for the crystal IR absorption edge, as an alternative to the residual absorption peak. Density practical concept computations exhibit the residual absorption in the BGSe crystal origi