| Numéro |
J. Phys. Colloques
Volume 49, Numéro C8, Décembre 1988
Proceedings of the International Conference on Magnetism
|
|
|---|---|---|
| Page(s) | C8-1227 - C8-1228 | |
| DOI | https://doi.org/10.1051/jphyscol:19888556 | |
Proceedings of the International Conference on Magnetism
J. Phys. Colloques 49 (1988) C8-1227-C8-1228
DOI: 10.1051/jphyscol:19888556
1 Physics Dept., University of Manitoba, Winnipeg, Canada R3T 2N2
2 Physics Department, Queen's University, Kingston, Canada K7L 3N6.
J. Phys. Colloques 49 (1988) C8-1227-C8-1228
DOI: 10.1051/jphyscol:19888556
ULTRASONIC INVESTIGATION OF MODIFIED CRITICAL BEHAVIOUR IN THE STRONG RANDOM-FIELD SYSTEM Dy ( As0.17V0.83) O4
J. H. Page1 et J. T. Graham21 Physics Dept., University of Manitoba, Winnipeg, Canada R3T 2N2
2 Physics Department, Queen's University, Kingston, Canada K7L 3N6.
Abstract
Ultrasonic measurements of the soft-mode elastic constant 1/2 (C11 - C12) have been performed to investigate the pseudospin susceptibility of the random-field system Dy (AsxV1-x) O4. The susceptibility critical exponent γ = 1.73 ± 0.07 for x = 0.17 is much larger than for the pure compound (x = 0), in reasonable agreement with predictions of the random-field Ising model.