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Powder diffraction refinement of the Co2Al5 structure

Published online by Cambridge University Press:  10 January 2013

U. Burkhardt ,
M. Ellner ,
Yu. Grin  and
B. Baumgartner
U. Burkhardt
Affiliation:
Max-Planck-Institut für Metallforschung, Seestraße 75, D-70174 Stuttgart, Germany
M. Ellner
Affiliation:
Max-Planck-Institut für Metallforschung, Seestraße 75, D-70174 Stuttgart, Germany
Yu. Grin
Affiliation:
Max-Planck-Institut für Festkörperforschung, Heisenbergstraße 1, D-70569 Stuttgart, Germany
B. Baumgartner
Affiliation:
STOE Application Laboratory, Hilpertstraße 10, D-64295 Darmstadt, Germany
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Abstract

The structure of Co2Al5 (hP28, P63/mmc) was refined by means of Rietveld method. The shortest Co–Al distance amounts 2.338 Å. Co2Al5 shows a homogeneity range between Co29Al71 and Co27.5Al72.5 at 1125 K. The concentration dependence of lattice parameters was also measured. The axial ratio c/a increases with increasing mole fraction of aluminum.

Type
Research Article
Information
Powder Diffraction , Volume 13 , Issue 3 , September 1998 , pp. 159 - 162
Copyright
Copyright © Cambridge University Press 1998

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