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Atomic self-diffusion in dodecagonal quasicrystals

  • J. Roth
  • F. Gähler

Abstract:

A molecular dynamics study of atomic self-diffusion in Frank-Kasper type dodecagonal quasicrystals is presented. It is found that the quasicrystal-specific flip mechanism for atomic diffusion, predicted by Kalugin and Katz, indeed occurs in this system. However, in order to be effective, this mechanism needs to be catalyzed by other defects, such as half-vacancies. For this reason, it is difficult to distinguish from standard vacancy diffusion.

PACS. 61.44.Br Quasicrystals - 66.30.-h Diffusion in solids - 61.72.Ji Point defects (vacancies, interstitials, color center, etc.) and defect clusters 

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Copyright information

© EDP Sciences, Springer-Verlag 1998

Authors and Affiliations

  • J. Roth
    • 1
  • F. Gähler
    • 1
  1. 1.Institut für Theoretische und Angewandte Physik, Universität Stuttgart, Pfaffenwaldring 57, 70550 Stuttgart, GermanyDE

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