| Issue |
J. Phys. IV France
Volume 06, Number C8, Décembre 1996
ICIFUAS 11Eleventh International Conference on Internal Friction and Ultrasonic Attenuation in Solids |
|
|---|---|---|
| Page(s) | C8-441 - C8-442 | |
| DOI | https://doi.org/10.1051/jp4:1996896 | |
ICIFUAS 11
Eleventh International Conference on Internal Friction and Ultrasonic Attenuation in Solids
J. Phys. IV France 06 (1996) C8-441-C8-442
DOI: 10.1051/jp4:1996896
1 Centre de Recherches sur les Très Basses Températures, Associé à l'Université Joseph Fourier, CNRS, BP. 166, 38042 Grenoble cedex 9, France
2 Institut de Physique Appliquée, Ecole Polytechnique de Lausanne, 1015 Lausanne, Switzerland
© EDP Sciences 1996
Eleventh International Conference on Internal Friction and Ultrasonic Attenuation in Solids
J. Phys. IV France 06 (1996) C8-441-C8-442
DOI: 10.1051/jp4:1996896
Ultrasonic Attenuation in Quasi-one-Dimensional (TaSe4)2I Compound
M. Saint-Paul1, P. Monceau1 and F. Levy21 Centre de Recherches sur les Très Basses Températures, Associé à l'Université Joseph Fourier, CNRS, BP. 166, 38042 Grenoble cedex 9, France
2 Institut de Physique Appliquée, Ecole Polytechnique de Lausanne, 1015 Lausanne, Switzerland
Abstract
The quasi-one-dimensional compound (TaSe4)2I is characterized by a very small shear elastic constant C44 corresponding to a sound velocity of 450 m/s. A large peak in the ultrasonic attenuation of the C44 mode is observed around the Peierls transition Tp= 263 K. This transition involves the formation of a charge density wave with an associated lattice distortion. The anelastic relaxation process is discussed.
© EDP Sciences 1996