′�?, by using a frequency of 295 cm−1, is attributed for the stretching vibration of Ga–Se bonds. The two-phonon absorption from the 295 cm−one phonon corresponds on the crystal IR absorption edge, as an alternative to the residual absorption peak. Density functional idea computations show the residual absorption in the https://sergioloqro.eedblog.com/32911017/5-easy-facts-about-baga4se7-crystal-described