′�?, that has 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 towards the crystal IR absorption edge, as opposed to the residual absorption peak. Density practical idea computations clearly show which the residual absorption with https://simonvavit.tusblogos.com/32994997/5-simple-techniques-for-baga4se7-crystal