Figure 5: EXAFS spectra of the ultra-quenched glass annealed at 623 K.
From: Structural origins of Johari-Goldstein relaxation in a metallic glass

(a) k2χ(k) spectra of Cu-K-edge; and (b) Zr-K-edge. (c) Fourier transform profiles of the experimental EXAFS spectra of Cu-K-edge, and (d) Zr-K-edge.