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Morphological evolution of the fivefold surface of i-AlPdMn quasicrystals

  • Giovanni Cappello
  • , Joël Chevrier
  • , Frank Schmithüsen
  • , Andreas Stierle
  • , Vincenzo Formoso
  • , Fabio Comin
  • , Marc de Boissieu
  • , Michel Boudard
  • , Thomas Lograsso
  • , Cynthia Jenks
  • , Dwigth Delaney

Research output: Contribution to journalArticlepeer-review

7 Scopus citations

Abstract

Morphology of the fivefold symmetric quasicrystal surface of AlPdMn was investigated by x-ray reflectivity and by x-ray diffraction. X-ray experiments revealed two different morphologies depending on the surface preparation. Sputtering and annealing up to 900 K, under UHV conditions, produced a rough and facetted quasicrystal surface. These features were confirmed by atomic force microscopy and scanning tunnel microscopy measurements. We also observed that an annealing above 900 K induces a rapid and irreversible transition toward a flat surface.

Original languageEnglish
Article number245405
Pages (from-to)2454051-2454057
Number of pages7
JournalPhysical Review B - Condensed Matter and Materials Physics
Volume65
Issue number24
DOIs
StatePublished - Jun 15 2002
Externally publishedYes

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