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Symmetry Changes At The Surface Of Al70Pd20Mn10

Published online by Cambridge University Press:  10 February 2011

B. Bolliger ,
M. Erbudak ,
A. Hensch ,
A.R. Kortan  and
D.D. Vvedensky
B. Bolliger
Affiliation:
Laboratorium f¨r Festkörperphysik, Eidgenössische Technische Hochschule Zürich, CH-8093 Zürich, Switzerland; Internet, [email protected]
M. Erbudak
Affiliation:
Laboratorium f¨r Festkörperphysik, Eidgenössische Technische Hochschule Zürich, CH-8093 Zürich, Switzerland; Internet, [email protected]
A. Hensch
Affiliation:
Laboratorium f¨r Festkörperphysik, Eidgenössische Technische Hochschule Zürich, CH-8093 Zürich, Switzerland; Internet, [email protected]
A.R. Kortan
Affiliation:
AT&T Bell Laboratories, Murray Hill, New Jersey 07974, USA
D.D. Vvedensky
Affiliation:
The Blackett Laboratory, Imperial College, London SW7 2BZ, United Kingdom
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Abstract

Sputtering with Ar+ ions induces structural phase transitions at the pentagonal surface of the icosahedral quasicrystal Al70Pd20Mn10. Sputtering at different temperatures changes the surface composition, thereby stabilizing different structures. At room temperature, the structure changes to body-centered cubic but, at elevated temperatures, it displays decagonal symmetry. In both cases, annealing the sample restores both the bulk composition and the icosahedral symmetry of the original surface.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 553: Symposium LL – Quasicrystals , 1998 , 257
Copyright
Copyright © Materials Research Society 1999

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References

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