Au-197 and Fe-57 Mossbauer study of Au-substituted Al-Cu-Fe quasi-crystalline alloys

Authors
Kyek, A Wagner, FE Palade, P Jianu, A Macovei, D Popescu, R Manaila, R Filoti, G
Citation
A. Kyek et al., Au-197 and Fe-57 Mossbauer study of Au-substituted Al-Cu-Fe quasi-crystalline alloys, J ALLOY COM, 313, 2000, pp. 13-20
Citations number
33
Categorie Soggetti
Apllied Physucs/Condensed Matter/Materiales Science
Journal title
JOURNAL OF ALLOYS AND COMPOUNDS
ISSN journal
09258388 → ACNP
Volume
313
Year of publication
2000
Pages
13 - 20
Database
ISI
SICI code
0925-8388(200012)313:<13:AAFMSO>2.0.ZU;2-8
Abstract
The substitution of up to 7 at. % of gold into icosahedral Al62Cu25.5Fe32.5 , quasicrystals has been investigated by Au-197 and Fe-57 Mossbauer spectro scopy. Gold was found to replace copper on BC1 sites and to hybridise stron gly with its Al neighbours. In addition, particularly at the higher Sold co ncentrations, the precipitation of small amounts of AuAl2 and beta -FeAl wa s observed. (C) 2000 Elsevier Science B.V. All rights reserved.