| Issue |
J. Phys. Colloques
Volume 49, Number C8, Décembre 1988
Proceedings of the International Conference on Magnetism
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|---|---|---|
| Page(s) | C8-2135 - C8-2136 | |
| DOI | https://doi.org/10.1051/jphyscol:19888955 | |
Proceedings of the International Conference on Magnetism
J. Phys. Colloques 49 (1988) C8-2135-C8-2136
DOI: 10.1051/jphyscol:19888955
Laboratoire Louis Néel, C.N.R.S., 166 X, 38042 Grenoble Cedex, France
J. Phys. Colloques 49 (1988) C8-2135-C8-2136
DOI: 10.1051/jphyscol:19888955
FIELD TRANSITION FROM 3D TO 2D ANTIFERROMAGNETIC CORRELATIONS IN NON-STOICHIOMETRIC La2CuO4-δ
B. Barbara, J. Beille et H. DupendantLaboratoire Louis Néel, C.N.R.S., 166 X, 38042 Grenoble Cedex, France
Abstract
SQUID magnetization experiments performed up to 70 kOe show the existence of a metamagnetic-like transition in La2Cu1.02O4-δ from which one derives the inter and intraplanar coupling constants as well as the 2D correlation length. The results indicate either a strong field dependence of the correlation length or a drecrease of the local moment with the Néel temperature (M α √TN above 50 K and M ≈ constant below this temperature).