′�?, by using a frequency of 295 cm−1, is attributed on the stretching vibration of Ga–Se bonds. The two-phonon absorption on the 295 cm−one phonon corresponds for the crystal IR absorption edge, as opposed to the residual absorption peak. Density useful idea computations demonstrate that the residual absorption from the https://beaueecvw.ja-blog.com/32701324/baga4se7-crystal-an-overview