Surface structural phase transitions on icosahedral Al-Pd-Mn

Authors
Bolliger, B Erbudak, M Hensch, A Vvedensky, DD
Citation
B. Bolliger et al., Surface structural phase transitions on icosahedral Al-Pd-Mn, MAT SCI E A, 294, 2000, pp. 859-862
Citations number
10
Categorie Soggetti
Apllied Physucs/Condensed Matter/Materiales Science","Material Science & Engineering
Journal title
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
ISSN journal
09215093 → ACNP
Volume
294
Year of publication
2000
Pages
859 - 862
Database
ISI
SICI code
0921-5093(200012)294:<859:SSPTOI>2.0.ZU;2-N
Abstract
The sputtering of alloy surfaces with Ar+ ions may change their chemical co mposition by preferentially removing particular atomic species. For the ico sahedral quasicrystal Al-Pd-Mn this produces reversible surface phase trans itions either to a cubic structure or to a decagonal quasicrystal, dependin g on the temperature. In both the cases, the original icosahedral structure is restored upon annealing. We discuss the orientation of these phases rel ative to the underlying icosahedral bulk and the processes responsible for the restoration of the icosahedral structure. (C) 2000 Elsevier Science B.V . All rights reserved.