The structure of the (Al, Cu)13Co4 phase with different Cu content
- 1 January 1994
- journal article
- Published by Walter de Gruyter GmbH in Zeitschrift für Kristallographie - Crystalline Materials
- Vol. 209 (1) , 49-51
- https://doi.org/10.1524/zkri.1994.209.1.49
Abstract
The structure of the (Al, Cu)13Co4 phase was determined by powder X-ray diffractometry and Rietveld refinement for 2,4,5 and 6 at.% Cu. The increase in the copper content is realized by the permanent replacement of the Al atoms by Cu in the (x0z) plane of the binary Al13Co4 structure. For up to 2 at.% of Cu this occurs at the (0.5, 0, 0.5) position. For the higher Cu content its atoms occupy completely or partially two other positions, whose coordinates for the 6 at.% Cu phase are (0.890, 0, 0.200) and (0.075, 0, 0.777). No partial occupancies of pure Al-sites are suggested for the 2–6 at.% Cu.Keywords
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