Radial-distribution function by EXAFS: Asymmetry in metallic glasses

Summary The authors discuss the information on the radial-distribution function (RDF) obtainable from EXAFS as compared with X-ray diffraction. The cases of Gaussian and non-Gaussian RDFs are illustrated showing how the Fourier transform (FT) of the experimental spectrum is connected with the RDF parameters in the two cases. The evidence of an asymmetric RDF in a metal glass, Fe₈₀B₂₀, is presented and discussed in detail. Paper presented at the Workshop on ?EXAFS Data Analysis in Disordered Systems?, held in Parma, October 5–7, 1981.