′�?, that has a frequency of 295 cm−1, is attributed for the stretching vibration of Ga–Se bonds. The 2-phonon absorption from the 295 cm−1 phonon corresponds for the crystal IR absorption edge, as an alternative to the residual absorption peak. Density practical concept computations display which the residual absorption in https://baga4se7-crystal63072.blog-kids.com/32834731/5-easy-facts-about-baga4se7-crystal-described