The structure of a decagonal Al72Ni20Co8quasicrystal

Hiroyuki Takakura, Akiji Yamamoto, An Pang Tsai

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86 Citations (Scopus)


The structure of a decagonal Al72Ni20Co8 quasicrystal with space group P105/mmc has been determined on the basis of a single-crystal X-ray data set using the five-dimensional description. The best-fit model structure based on a cluster model having lower symmetry than the decagonal symmetry with 103 parameters gives wR = 0.045 and R = 0.063 for 449 reflections. The structure is well described by the hexagon, boat and star tiling with an edge length of 6.36 Å and is very consistent with recent high-resolution electron-microscopy images. The refined structure is compared with previously discussed model structures including cluster-based models having 20 Å tenfold symmetric clusters.

Original languageEnglish
Pages (from-to)576-585
Number of pages10
JournalActa Crystallographica Section A: Foundations of Crystallography
Issue number5
Publication statusPublished - 2001 Jan 1
Externally publishedYes

ASJC Scopus subject areas

  • Structural Biology


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