′�?, by using a frequency of 295 cm−1, is attributed for the stretching vibration of Ga–Se bonds. The 2-phonon absorption with the 295 cm−1 phonon corresponds on the crystal IR absorption edge, in lieu of the residual absorption peak. Density purposeful theory computations present that the residual absorption in the https://marcoljcvq.oblogation.com/31941666/the-best-side-of-baga4se7-crystal