| Numéro |
J. Phys. Colloques
Volume 49, Numéro C8, Décembre 1988
Proceedings of the International Conference on Magnetism
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|---|---|---|
| Page(s) | C8-1045 - C8-1046 | |
| DOI | https://doi.org/10.1051/jphyscol:19888477 | |
Proceedings of the International Conference on Magnetism
J. Phys. Colloques 49 (1988) C8-1045-C8-1046
DOI: 10.1051/jphyscol:19888477
1 Hahn-Meitner-Institut, Pf. 390128, D-1000 Berlin 39, F.R.G.
2 Institut für Festkörperforschung, KFA Jülich, D-5170 Jülich, F.R.G.
3 Institut Laue Langevin, 156X, F-38042 Grenoble Cedex, France
4 Brookhaven National Laboratory, Upton, Long Island N.Y. 11973, U.S.A.
J. Phys. Colloques 49 (1988) C8-1045-C8-1046
DOI: 10.1051/jphyscol:19888477
ANOMALOUS SPIN DYNAMICS IN THE PARAMAGNETIC PHASE OF SPIN GLASSES
F. Mezei1, H. Maletta2, B. Farago3 et S. M. Shapiro41 Hahn-Meitner-Institut, Pf. 390128, D-1000 Berlin 39, F.R.G.
2 Institut für Festkörperforschung, KFA Jülich, D-5170 Jülich, F.R.G.
3 Institut Laue Langevin, 156X, F-38042 Grenoble Cedex, France
4 Brookhaven National Laboratory, Upton, Long Island N.Y. 11973, U.S.A.
Abstract
Neutron Spin Echo experiments revealed an anomalous paramagnetic phase above the transition temperature in the insulating Eu0.4Sr0.6S, similarly to previously studied metallic spin glasses. The universal signatures of this phase underline the fundamental rôle spin non-conserving forces (anisotropy) and possibly activated processes play in bringing about the spin glass transition.