′�?, having a frequency of 295 cm−1, is attributed into the stretching vibration of Ga–Se bonds. The two-phonon absorption of the 295 cm−one phonon corresponds to the crystal IR absorption edge, as an alternative to the residual absorption peak. Density practical concept computations demonstrate that the residual absorption of the https://baga4se7crystal96284.izrablog.com/33191379/5-simple-techniques-for-baga4se7-crystal