| Numéro |
J. Phys. Colloques
Volume 49, Numéro C8, Décembre 1988
Proceedings of the International Conference on Magnetism
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|---|---|---|
| Page(s) | C8-2171 - C8-2172 | |
| DOI | https://doi.org/10.1051/jphyscol:19888973 | |
Proceedings of the International Conference on Magnetism
J. Phys. Colloques 49 (1988) C8-2171-C8-2172
DOI: 10.1051/jphyscol:19888973
1 Institut für Festkörperforschung der KFA Jülich, 5170 Jülich, F.R.G.
2 Institut Laue-Langevin, BP 156X, 38042 Grenoble Cedex, France
J. Phys. Colloques 49 (1988) C8-2171-C8-2172
DOI: 10.1051/jphyscol:19888973
NEUTRON DIFFRACTION STUDY OF THE MAGNETIC ORDERING IN GdBa2Cu3O7-δ
T. Chattopadhyay1, H. Maletta1, W. Wirges1, K. Fischer1 et P. J. Brown21 Institut für Festkörperforschung der KFA Jülich, 5170 Jülich, F.R.G.
2 Institut Laue-Langevin, BP 156X, 38042 Grenoble Cedex, France
Abstract
Neutron diffraction investigations on a single crystal of GdBa2Cu3O7-δ (δ = 0.5) show that the Gd moments order at TN = 2.2 K with a wave vector (1/2, 1/2, 0). The Gd moments are antiferromagnetically coupled to their nearest neighbours in the a - b plane but are ferromagnetically coupled along the c-axis in contrast to the case of GdBa2Cu3O7 where the coupling along this direction is antiferromagnetic.