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Surfactant-Mediated Growth of Epitaxial Films on Quasiperiodic Surfaces

Published online by Cambridge University Press:  17 March 2011

Masahiko Shimoda ,
Junqing Guo ,
Taku J. Sato  and
An Pang Tsai
Masahiko Shimoda
Affiliation:
National Research Institute for Metals 1-2-1, Sengen, Tsukuba, Ibaraki, 305-0047, Japan
Junqing Guo
Affiliation:
CREST, Japan Science and Technology Corporation, Kawaguchi, Saitama, 332-0012, Japan
Taku J. Sato
Affiliation:
National Research Institute for Metals 1-2-1, Sengen, Tsukuba, Ibaraki, 305-0047, Japan
An Pang Tsai
Affiliation:
National Research Institute for Metals 1-2-1, Sengen, Tsukuba, Ibaraki, 305-0047, Japan
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Abstract

We have succeeded for the first time in inducing epitaxial growth of metal films on quasiperiodic surfaces. Depositions of Au onto the tenfold surface of a decagonal Al-Ni-Co quasicrystal were originally attempted to create a quasicrystal of a single element as an epitaxial film. Although the desired film was not obtained on the clean surface, a multiply twinned AuAl2 crystalline layer with a (110)-oriented surface was formed with the aid of an In pre-deposition layer. The presence of pre-deposited In also worked as a surfactant for the case of Au-deposition onto the fivefold surface of an icosahedral Al-Pd-Mn quasicrystal and promoted the formation of an ordered film of Au-Al alloy. X-ray photoelectron diffraction images from this ordered film show that the alloy has an icosahedral structure as a long-range order, suggesting the formation of a quasicrystalline film.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 643: Symposium K – Quasicrystals-Preparation, Properties, and Applications , 2000 , K11.5
Copyright
Copyright © Materials Research Society 2001

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References

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