′�?, having a frequency of 295 cm−one, is attributed to the stretching vibration of Ga–Se bonds. The two-phonon absorption of your 295 cm−1 phonon corresponds into the crystal IR absorption edge, rather than the residual absorption peak. Density useful principle computations display the residual absorption on the BGSe crystal originates https://baga4se7-crystal73851.worldblogged.com/38444820/5-easy-facts-about-baga4se7-crystal-described