′�?, having a frequency of 295 cm−one, is attributed to the stretching vibration of Ga–Se bonds. The 2-phonon absorption of the 295 cm−one phonon corresponds to your crystal IR absorption edge, instead of the residual absorption peak. Density practical principle computations present the residual absorption on the BGSe crystal originates https://baga4se7crystal84172.articlesblogger.com/55311008/a-simple-key-for-baga4se7-crystal-unveiled