Surface structure and structural transition of decagonal Al-Ni-Co quasicrystal

M. Shimoda, J. Q. Guo, T. J. Sato, A. P. Tsai

Research output: Contribution to journalConference articlepeer-review

33 Citations (Scopus)


X-ray photoelectron diffraction (XPD) and reflection high-energy electron diffraction (RHEED) measurements have been performed to investigate the surface structure of the decagonal Al72Ni12Co16 quasicrystal, which is known as a two dimensional quasicrystal. RHEED patterns for the surface parallel to the quasiperiodic planes are almost identical to the selected area electron diffraction (SAD) patterns taken along the twofold axes of the bulk sample. The XPD images show clear tenfold-symmetric patterns consistent with the long range orientational order of the decagonal quasicrystal. These facts suggest that the surface has the same quasiperiodic structure as in the bulk. The surface phase transition induced by Ar+ ion bombardment is also investigated.

Original languageEnglish
Pages (from-to)11-15
Number of pages5
JournalSurface Science
Issue number1
Publication statusPublished - 2000 May 20
EventECOSS-18: 18th European Conference on Surface Science - Vienna, Austria
Duration: 1999 Sept 211999 Sept 24


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