| Numéro |
J. Phys. IV France
Volume 7, Numéro C2, Avril 1997
Proceedings of the 9th International Conference on X-Ray Absorption Fine Structure
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|---|---|---|
| Page(s) | C2-991 - C2-992 | |
| DOI | https://doi.org/10.1051/jp4:19972110 | |
Proceedings of the 9th International Conference on X-Ray Absorption Fine Structure
J. Phys. IV France 7 (1997) C2-991-C2-992
DOI: 10.1051/jp4:19972110
1 Laboratoire de Physique des Matériaux et des Surfaces, Université de Cergy-Pontoise, 49 avenue des Génottes, 95806 Cergy cedex, France
2 LURE, Université Paris-Sud, 91405 Orsay cedex, France
3 Physique des Milieux Condensés, Université Pierre et Marie Curie, 75252 Paris cedex 05, France
© EDP Sciences 1997
J. Phys. IV France 7 (1997) C2-991-C2-992
DOI: 10.1051/jp4:19972110
EXAFS Evidence of a Phase Transition in Icosahedral AlLiCu Quasicrystals under High Pressure
A. Sadoc1, 2, J.P. Itié2, 3, A. Polian2, 3 and S. Lefebvre21 Laboratoire de Physique des Matériaux et des Surfaces, Université de Cergy-Pontoise, 49 avenue des Génottes, 95806 Cergy cedex, France
2 LURE, Université Paris-Sud, 91405 Orsay cedex, France
3 Physique des Milieux Condensés, Université Pierre et Marie Curie, 75252 Paris cedex 05, France
Abstract
In situ EXAFS studies, performed at the Cu K absorption edge, are reported for icosahedral Al6Li3Cu quasicrystals frorn ambient pressure up to 33 GPa. The increase in the average distance of first neighbours around Cu atoms above 20 GPa is interpreted as the finger-print of a phase transition, while the evolution of the disorder parameter could be the signature of phason disorder.
© EDP Sciences 1997