| Numéro |
J. Phys. Colloques
Volume 49, Numéro C8, Décembre 1988
Proceedings of the International Conference on Magnetism
|
|
|---|---|---|
| Page(s) | C8-921 - C8-922 | |
| DOI | https://doi.org/10.1051/jphyscol:19888419 | |
Proceedings of the International Conference on Magnetism
J. Phys. Colloques 49 (1988) C8-921-C8-922
DOI: 10.1051/jphyscol:19888419
1 Institut für Festkörperforschung, KFA Jülich, Postfach 1913, D-5170 Jülich, F.R.G.
2 Institute of Experimental Physics, Warsaw University, Poland
3 Institute Laue-Langevin, 156 X, F-38042 Grenoble Cedex, France
J. Phys. Colloques 49 (1988) C8-921-C8-922
DOI: 10.1051/jphyscol:19888419
SPIN-REORIENTATION IN NdFeO3 AND THE MAGNETIC EXCITATION SPECTRUM OF Nd
M. Loewenhaupt1, I. Sosnowska1, 2 et B. Frick31 Institut für Festkörperforschung, KFA Jülich, Postfach 1913, D-5170 Jülich, F.R.G.
2 Institute of Experimental Physics, Warsaw University, Poland
3 Institute Laue-Langevin, 156 X, F-38042 Grenoble Cedex, France
Abstract
With inelastic neutron scattering we investigated the magnetic excitation spectrum of Nd3+ ions in the ordered state of the perovskite NdFeO3 between 2 K and 210 K. At temperatures below the spin-reorientation of the Fe moments we observe an inelastic response of the Nd ground state doublet due to the Zeeman splitting. Above SR the spectrum becomes quasieleastic. This means that the molecular field at the Nd ions is fluctuating above TSR and becomes static below TSR.