′�?, which has a frequency of 295 cm−1, is attributed towards the stretching vibration of Ga–Se bonds. The two-phonon absorption on the 295 cm−1 phonon corresponds towards the crystal IR absorption edge, as opposed to the residual absorption peak. Density functional principle computations present which the residual absorption in the https://baga4se7crystal24678.blogsvirals.com/31719108/a-secret-weapon-for-baga4se7-crystal