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      https://www.ias.ac.in/article/fulltext/pram/027/06/0821-0833

    • Keywords

       

      XANES; phase-shifts; metallic-glasses; co-ordination number; bond distances; near-neighbour environment; single-scattering; multiple-scattering; polk model; synchrotron radiation

    • Abstract

       

      XANES and EXAFS techniques are proving very popular in the study of local environment in disordered systems. Results of such studies in a large number of metal (Fe, Co, Ni, etc)-metalloid (B, Si, C, etc) glasses are reported. Experiments were done with synchrotron radiation as well as an x-ray tube. The values of bond lengths and co-ordination numbers computed from one-electron single scattering Fourier transform method turn out substantially smaller. The values of bondlength determined from the other EXAFS calculation method and the multiple-scattering computation scheme show good agreement. Importance of choice of suitable reference materials for analysis of data is emphasized.

    • Author Affiliations

       

      K B Garg1 Kavita S Jerath1 H S Chauhan1 Usha Chandra1

      1. Department of Physics, University of Rajasthan, Jaipur - 302 004, India
    • Dates

       
  • Pramana – Journal of Physics | News

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