Volume 33, Number 3, January III 1996
|Page(s)||199 - 204|
|Section||Condensed matter: structure, thermal and mechanical properties|
|Published online||01 September 2002|
Phason softening in the AlPdMn icosahedral phase
Laboratoire de Thermodynamique et Physico-Chimie Métallurgiques UA
CNRS 29, ENSEEG, BP 75 - 38402, St. Martin d'Heres Cedex, France
2 Laboratoire Léon Brillouin, Centre d'Energie Nucléaire Saclay 91191 Gif sur Yvette Cedex, France
3 Institut Laue-Langevin BP 156 - 38042 Grenoble Cedex 9, France
Accepted: 4 December 1995
The diffuse scattering located close to Bragg reflections has been studied as a function of the temperature on a single grain of the AlPdMn icosahedral phase. Between C and C there is a reversible and continuous transition. When the temperature increases, the diffuse scattering diminishes whereas high- reflections have their intensity increased. All results are well interpreted within the elasticity theory of quasi-crystals: the changes in diffuse scattering shape and intensity when lowering the temperature are due to a softening of the K1 phason elastic constant. The time decay of these long-wavelength phason fluctuations is larger than 5 ns.
PACS: 61.44.+p – Quasicrystals / 61.12.-q – Neutron diffraction and scattering
© EDP Sciences, 1996
Current usage metrics show cumulative count of Article Views (full-text article views including HTML views, PDF and ePub downloads, according to the available data) and Abstracts Views on Vision4Press platform.
Data correspond to usage on the plateform after 2015. The current usage metrics is available 48-96 hours after online publication and is updated daily on week days.
Initial download of the metrics may take a while.