′�?, having a frequency of 295 cm−1, is attributed into the stretching vibration of Ga–Se bonds. The two-phonon absorption with the 295 cm−one phonon corresponds towards the crystal IR absorption edge, rather than the residual absorption peak. Density useful principle computations exhibit the residual absorption on the BGSe crystal originates https://baga4se7-crystal97429.blogunteer.com/31727854/what-does-baga4se7-crystal-mean