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Combined neutron and x-ray powder diffraction study of Fe0.50Co0.48V0.02

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Abstract

The large number of constituent elements and high symmetry of the ordered Fe–Co−V alloys make a complete solution of its structure impossible from a single diffraction experiment. We have carried out a Rietveld refinement of the site occupancies for a partially ordered Fe–Co–V alloy using both neutron and anomalous dispersion x-ray powder diffraction data in order to obtain a complete crystallographic solution to its structure. Contrary to previous assumptions that V occupies both sites randomly or magnetic and Mössbauer studies that suggest that V has a site preference for the Fe sublattice, we find that the V dopant preferentially occupies the Co sites.

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Authors and Affiliations

  1. Los Alamos National Laboratory, New Mexico, 87545, Los Alamos, USA

    A. Williams, G. H. Kwei & A. T. Ortiz

  2. Sandia National Laboratory, New Mexico, 87185, Albuquerque, USA

    M. Karnowski

  3. X-ray Instrumentation Associates, California, 94025, Menlo Park, USA

    W. K. Warburton

Authors
  1. A. Williams
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  2. G. H. Kwei
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  3. A. T. Ortiz
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  4. M. Karnowski
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  5. W. K. Warburton
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Williams, A., Kwei, G.H., Ortiz, A.T. et al. Combined neutron and x-ray powder diffraction study of Fe0.50Co0.48V0.02. Journal of Materials Research 5, 1197–1200 (1990). https://doi.org/10.1557/JMR.1990.1197

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  • DOI: https://doi.org/10.1557/JMR.1990.1197

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