′�?, with a frequency of 295 cm−1, is attributed to the stretching vibration of Ga–Se bonds. The 2-phonon absorption on the 295 cm−1 phonon corresponds to your crystal IR absorption edge, in lieu of the residual absorption peak. Density practical idea computations demonstrate that the residual absorption with the BGSe https://baga4se7-crystal85318.bcbloggers.com/32060044/5-simple-techniques-for-baga4se7-crystal