Document Type

Article

Publication Date

7-27-2006

Journal or Book Title

Physical Review B

Volume

74

Issue

3

First Page

035429

DOI

10.1103/PhysRevB.74.035429

Abstract

The elucidation of the local atomic structure of a pseudomorphic film of Cu deposited on the five-fold surface of i-Al70Pd21Mn9using medium-energy ion scattering spectroscopy is reported. Monte Carlo calculations, using the VEGAS code, have been utilized to simulate the blocking of 100 keV He+ ions scattered from the overlayer. The coordinates of the Cu atoms in the overlayer derived from this procedure are consistent with a structure occurring in five rotational domains. Each domain consists of nanoscale strips of fcc Cu(100) with the ⟨110⟩ azimuth aligned along the five-fold directions of the quasicrystalline substrate. The strips are arranged according to a one-dimensional Fibonacci sequence with long and short widths related by the golden mean τ. Upon annealing the film transforms to an alloyed structure composed of five orientational domains of fcc material with the (110) axis perpendicular to the surface.

Comments

This article is from Physical Review B 74 (2006): 035429, doi:10.1103/PhysRevB.74.035429.

Copyright Owner

American Physical Society

Language

en

File Format

application/pdf

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