′�?, which has a frequency of 295 cm−1, is attributed for the stretching vibration of Ga–Se bonds. The two-phonon absorption on the 295 cm−1 phonon corresponds for the crystal IR absorption edge, as an alternative to the residual absorption peak. Density useful concept computations demonstrate the residual absorption in the https://baga4se7-crystal02356.blogdon.net/baga4se7-crystal-can-be-fun-for-anyone-48931869