Influence of metalloids on the XANES spectra of metallic glasses

Abstract Calculations of X-ray absorption near edge structure spectra for amorphous metal–metalloid systems are performed, using an amorphous metal model, where some first neighbor atoms are progressively substituted by metalloids. The results are compared with experimental curves obtained in the (Fe0.2Co0.8)75SixB25−x system with 0⩽x⩽25. The changes of the shape of the curves with the replacement of metalloids are qualitatively reproduced by the calculations. Results confirm the affinity of Si for Co and of B for Fe as found experimentally.