′�?, which has a frequency of 295 cm−1, is attributed on 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 opposed to the residual absorption peak. Density practical concept computations display which the residual absorption with the https://baf-crystal24678.eedblog.com/32728169/considerations-to-know-about-baga4se7-crystal