| Numéro |
J. Phys. Colloques
Volume 49, Numéro C8, Décembre 1988
Proceedings of the International Conference on Magnetism
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|---|---|---|
| Page(s) | C8-2169 - C8-2170 | |
| DOI | https://doi.org/10.1051/jphyscol:19888972 | |
Proceedings of the International Conference on Magnetism
J. Phys. Colloques 49 (1988) C8-2169-C8-2170
DOI: 10.1051/jphyscol:19888972
1 Centre d'Etudes Nucléaires, DRF/SPh-MDN, 85X, 38041 Grenoble Cedex, France
2 Institut für Festkörperforschung der KFA Jülich, 5170 Jülich, F.R.G.
3 Institut Laue-Langevin, 156X, 38042 Grenoble Cedex, France
4 Institut für Werkstoffe der Elektrotechnik and 2. Physikalisches Institut, RWTH Aachen, F.R.G.
J. Phys. Colloques 49 (1988) C8-2169-C8-2170
DOI: 10.1051/jphyscol:19888972
EVIDENCE FOR THREE DIMENSIONAL MAGNETIC ORDERING IN ErBa2Cu3O7
T. Chattopadhyay1, 2, P. J. Brown3, D. Bonnenberg4, S. Ewert4 et H. Malletta21 Centre d'Etudes Nucléaires, DRF/SPh-MDN, 85X, 38041 Grenoble Cedex, France
2 Institut für Festkörperforschung der KFA Jülich, 5170 Jülich, F.R.G.
3 Institut Laue-Langevin, 156X, 38042 Grenoble Cedex, France
4 Institut für Werkstoffe der Elektrotechnik and 2. Physikalisches Institut, RWTH Aachen, F.R.G.
Abstract
Neutron diffraction experiments on polycrystalline samples of ErBa2Cu3O7 show that Er moments are ordered three-dimensionally at T = 140 mK. Two independent propagation vectors k1 = (1/2 0 0) and k2 = (1/2 0 1/2) are required to index the magnetic reflections. Er moments are inclined at an angle of 32 deg to the c-axis and the ordered magnetic moment at 140 mK is 4.9 (2) µB.