′�?, that has a frequency of 295 cm−one, is attributed on the stretching vibration of Ga–Se bonds. The two-phonon absorption of the 295 cm−one phonon corresponds to the crystal IR absorption edge, instead of the residual absorption peak. Density practical concept computations show the residual absorption of your BGSe crystal https://landenbgdwo.weblogco.com/32892605/top-latest-five-baga4se7-crystal-urban-news