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Original Articles

First UHV surface studies of single-grain icosahedral Ag–In–Yb quasicrystal

, , &
Pages 2989-2994 | Received 31 Aug 2006, Published online: 02 Dec 2010
 

Abstract

We present the first ultrahigh vacuum (UHV) surface study of single-grain icosahedral Ag–In–Yb quasicrystal by using X-ray photoelectron spectroscopy (XPS), reflection high-energy electron diffraction (RHEED), and scanning tunnelling microscopy (STM). This new quasicrystal is found to exhibit surfaces with steps and terraces, upon suitable preparation conditions. The Fourier transform of high-resolution STM images and RHEED patterns reveal that the surface after annealing at appropriate temperatures retains quasicrystalline long-range order. The analysis of XPS data measured from this surface shows a near bulk chemical composition in the surface region.

Acknowledgements

APT and MS would like to gratefully acknowledge financial support from JST Solution-Oriented Research for Science and Technology (SORST).

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