Structure of the Fivefold Surface of the Icosahedral Al-Cu-Fe Quasicrystal: Experimental Evidence of Bulk Truncations at Larger Interlayer Spacings

H. R. Sharma, V. Fournée, M. Shimoda, A. R. Ross, T. A. Lograsso, A. P. Tsai, and A. Yamamoto
Phys. Rev. Lett. 93, 165502 – Published 14 October 2004

Abstract

Based on scanning tunneling microscopy of the fivefold surface of the icosahedral Al-Cu-Fe quasicrystal and the refined structure model of the isostructural i-Al-Pd-Mn, we present evidence that the surface corresponds to bulk truncations at the positions where blocks of atomic layers are separated by larger interlayer spacings (gaps). Both step-height distribution and high resolution scanning tunneling microscopy images on terraces reveal bulk truncations at larger gaps.

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  • Received 5 July 2004

DOI:https://doi.org/10.1103/PhysRevLett.93.165502

©2004 American Physical Society

Authors & Affiliations

H. R. Sharma1,*, V. Fournée2, M. Shimoda1,3, A. R. Ross4, T. A. Lograsso4, A. P. Tsai1,3,5, and A. Yamamoto6

  • 1SORST, Japan Science and Technology Agency, Japan
  • 2LSG2M, CNRS-UMR7584, Ecole des Mines, Parc de Saurupt, 54042 Nancy, France
  • 3National Institute for Materials Science, 1-2-1 Sengen, Tsukuba, Ibaraki, 305-0047, Japan
  • 4Department of Materials Science and Engineering, Ames Laboratory, Ames, Iowa 50011, USA
  • 5Institute of Multidisciplinary Research for Advanced Materials, Tohoku University, Sendai, 980-8577, Japan
  • 6Advanced Materials Laboratory, National Institute for Materials Science, Tsukuba, Ibaraki, 305-0044, Japan

  • *Corresponding author. Electronic address: hemraj.sharma@nims.go.jp

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Vol. 93, Iss. 16 — 15 October 2004

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