′�?, that has a frequency of 295 cm−one, is attributed into the stretching vibration of Ga–Se bonds. The 2-phonon absorption on the 295 cm−1 phonon corresponds for the crystal IR absorption edge, as an alternative to the residual absorption peak. Density practical concept computations show which the residual absorption with https://griffinixkvh.blogscribble.com/32856921/detailed-notes-on-baga4se7-crystal