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

Published online by Cambridge University Press:  31 January 2011

A. Williams ,
G. H. Kwei ,
A. T. Ortiz ,
M. Karnowski  and
W. K. Warburton
A. Williams
Affiliation:
Los Alamos National Laboratory, Los Alamos, New Mexico 87545
G. H. Kwei
Affiliation:
Los Alamos National Laboratory, Los Alamos, New Mexico 87545
A. T. Ortiz
Affiliation:
Los Alamos National Laboratory, Los Alamos, New Mexico 87545
M. Karnowski
Affiliation:
Sandia National Laboratory, Albuquerque, New Mexico 87185
W. K. Warburton
Affiliation:
X-ray Instrumentation Associates, Menlo Park, California 94025
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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.

Type
Articles
Information
Journal of Materials Research , Volume 5 , Issue 6 , June 1990 , pp. 1197 - 1200
Copyright
Copyright © Materials Research Society 1990

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References

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