′�?, using a frequency of 295 cm−1, is attributed for the stretching vibration of Ga–Se bonds. The two-phonon absorption from the 295 cm−one phonon corresponds on the crystal IR absorption edge, as an alternative to the residual absorption peak. Density practical concept computations display which the residual absorption in the https://baga4se7-crystal30568.bcbloggers.com/31979006/5-tips-about-baga4se7-crystal-you-can-use-today