′�?, having a frequency of 295 cm−one, is attributed to your stretching vibration of Ga–Se bonds. The 2-phonon absorption on the 295 cm−1 phonon corresponds into the crystal IR absorption edge, rather than the residual absorption peak. Density useful concept computations show the residual absorption from the BGSe crystal originates https://bgocrystal08406.blog-kids.com/32964047/baga4se7-crystal-options