| Numéro |
J. Phys. Colloques
Volume 49, Numéro C8, Décembre 1988
Proceedings of the International Conference on Magnetism
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|---|---|---|
| Page(s) | C8-249 - C8-250 | |
| DOI | https://doi.org/10.1051/jphyscol:19888109 | |
Proceedings of the International Conference on Magnetism
J. Phys. Colloques 49 (1988) C8-249-C8-250
DOI: 10.1051/jphyscol:19888109
Laboratoire Louis Néel, C.N.R.S., 166X, 38042 Grenoble cedex, France
J. Phys. Colloques 49 (1988) C8-249-C8-250
DOI: 10.1051/jphyscol:19888109
ANOMALOUS THERMAL VARIATION OF THE COBALT ANISOTROPY AND LONGITUDINAL SPIN FLUCTUATIONS IN Y2Co7
R. Ballou et L. LemaireLaboratoire Louis Néel, C.N.R.S., 166X, 38042 Grenoble cedex, France
Abstract
A single crystal magnetostatic study of the intermetallic compound Y2Co7 is presented, revealing the existence of extremes in the thermal variation of the anisotropy constants of the compound. These anomalies are understood as resulting from large longitudinal spin fluctuations which are gradually frozen by an applied field, and associated with metamagnetic instabilities of the cobalt magnetism occurring within a finite range of temperatures.