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Original Articles

Structure solution of Co-rich decagonal Al–Co–Ni

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Pages 2747-2752 | Received 31 Aug 2006, Accepted 16 Oct 2006, Published online: 02 Dec 2010
 

Abstract

The structure of Co-rich decagonal Al72.5Co18.5Ni9 has been determined by single crystal X-ray diffraction methods. This is the only modification with four-layer periodicity showing sharp Bragg reflections in all reciprocal space layers. The quasilattice parameters are a1–4 = 4.464(1) Å and a5 = 8.137(3) Å; the Laue group is 10/mmm. Structure solution was performed by the 5D ‘charge-flipping method’. Due to pseudosymmetry, only a structure model averaged over a two-layer period (4.068 Å) could be obtained.

Acknowledgement

We thank Lukas Palatinus for his support with SUPERFLIP and gratefully acknowledge financial support under grant SNF 200020-105158.

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