| Numéro |
J. Phys. Colloques
Volume 49, Numéro C8, Décembre 1988
Proceedings of the International Conference on Magnetism
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|---|---|---|
| Page(s) | C8-1047 - C8-1048 | |
| DOI | https://doi.org/10.1051/jphyscol:19888478 | |
Proceedings of the International Conference on Magnetism
J. Phys. Colloques 49 (1988) C8-1047-C8-1048
DOI: 10.1051/jphyscol:19888478
1 Institut Laue-Langevin, BP 156X, 38042 Grenoble Cedex, France
2 Schuster Laboratory, University of Manchester, Manchester, G.B.
3 Clarenden Laboratory, University of Oxford, Oxford, G.B.
J. Phys. Colloques 49 (1988) C8-1047-C8-1048
DOI: 10.1051/jphyscol:19888478
THE DYNAMICS OF DISORDERED MAGNETS IN THE GRIFFITHS PHASE, INVESTIGATED BY NEUTRON SCATTERING
R. G. Lloyd1, P. W. Mitchell2, R. C. C. Ward3 et M. Cherrill31 Institut Laue-Langevin, BP 156X, 38042 Grenoble Cedex, France
2 Schuster Laboratory, University of Manchester, Manchester, G.B.
3 Clarenden Laboratory, University of Oxford, Oxford, G.B.
Abstract
We present neutron scattering measurements of the dynamics of the dipolar magnets LiTbF4 and Li (Tb0.6Y0.4) F4 at TC and in the Griffiths phase. For both systems mean-field theory describes the dynamics above TC, but a value of 1.01 ± 0.03 for the dynamical critical exponent was observed in the pure system.