| Numéro |
J. Phys. I France
Volume 2, Numéro 8, August 1992
|
|
|---|---|---|
| Page(s) | 1553 - 1557 | |
| DOI | https://doi.org/10.1051/jp1:1992221 | |
DOI: 10.1051/jp1:1992221
J. Phys. I France 2 (1992) 1553-1557
1 Laboratoire de Physique des Solides, Université Paris-Sud, 91405 Orsay Cedex, France
2 CECM/CNRS, 15 rue G. Urbain, 94407 Vitry Cedex, France
© Les Editions de Physique 1992
J. Phys. I France 2 (1992) 1553-1557
Specific-heat measurements in phason-strained quasicrystalline AlFeCu
K. Wang1, C. Scheidt1, P. Garoche1 and Y. Calvayrac21 Laboratoire de Physique des Solides, Université Paris-Sud, 91405 Orsay Cedex, France
2 CECM/CNRS, 15 rue G. Urbain, 94407 Vitry Cedex, France
(Received 7 April 1992, accepted 4 June 1992)
Abstract
We measured the low temperature specific-heat on phason-strained and phason-free samples of the
quasicrystalline Al
62Cu
25.5Fe
12.5 alloy. A strong enhancement of the vibrational
contribution is observed for the phason-strained sample. This clearly indicates a softening of
low-energy phonon modes, which allows us to deduce a decrease of the elastic shear modulus induced by
phason strains.
© Les Editions de Physique 1992