′�?, having a frequency of 295 cm−1, is attributed on the stretching vibration of Ga–Se bonds. The two-phonon absorption in the 295 cm−1 phonon corresponds towards the crystal IR absorption edge, as an alternative to the residual absorption peak. Density practical concept computations display that the residual absorption with the https://baga4se7-crystal74184.acidblog.net/63635788/5-tips-about-baga4se7-crystal-you-can-use-today