′�?, with a frequency of 295 cm−1, is attributed to your stretching vibration of Ga–Se bonds. The 2-phonon absorption with the 295 cm−one phonon corresponds on the crystal IR absorption edge, as an alternative to the residual absorption peak. Density functional idea computations demonstrate that the residual absorption in the https://baga4se7crystal08529.digitollblog.com/32524505/helping-the-others-realize-the-advantages-of-baga4se7-crystal