Temperature dependence of the 8-Å superstructure in decagonal Al-Co-Ni

F. Frey, E. Weidner, K. Hradil, M. de Boissieu, A. Letoublon, G. McIntyre, R. Currat, A. P. Tsai

Research output: Contribution to journalArticlepeer-review

18 Citations (Scopus)


Diffuse layers corresponding to an 8 Å superperiod along the 'periodic' axis of decagonal Al-Ni-Co phases were investigated by in situ X-ray and neutron diffraction at temperatures up to 980 °C. The diffuse layers consist of an unstructured diffuse background, diffuse bands, and diffuse maxima which (almost) all vanish above 900 °C, but show a different temperature dependence in detail. A tentative scenario of the related structural ordering process during cooling from high temperature is developed. A 1D-columnar cluster model is compared to the experimental results.

Original languageEnglish
Pages (from-to)57-64
Number of pages8
JournalJournal of Alloys and Compounds
Issue number1-2
Publication statusPublished - 2002 Aug 14
Externally publishedYes


  • Decagonal quasicrystal
  • Diffuse layers
  • High temperature
  • Neutron diffraction
  • Periodic superstructure

ASJC Scopus subject areas

  • Mechanics of Materials
  • Mechanical Engineering
  • Metals and Alloys
  • Materials Chemistry


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