′�?, which has a frequency of 295 cm−one, is attributed towards the stretching vibration of Ga–Se bonds. The two-phonon absorption of the 295 cm−one phonon corresponds on the crystal IR absorption edge, in lieu of the residual absorption peak. Density practical theory computations show that the residual absorption of the https://gunnergorss.theobloggers.com/38857782/5-simple-techniques-for-baga4se7-crystal