′�?, with a frequency of 295 cm−1, is attributed on the stretching vibration of Ga–Se bonds. The 2-phonon absorption in the 295 cm−1 phonon corresponds to your crystal IR absorption edge, as an alternative to the residual absorption peak. Density functional principle computations display which the residual absorption on the https://finnlcpan.link4blogs.com/54271697/not-known-details-about-baga4se7-crystal