| Numéro |
J. Phys. Colloques
Volume 49, Numéro C8, Décembre 1988
Proceedings of the International Conference on Magnetism
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|
|---|---|---|
| Page(s) | C8-707 - C8-708 | |
| DOI | https://doi.org/10.1051/jphyscol:19888320 | |
Proceedings of the International Conference on Magnetism
J. Phys. Colloques 49 (1988) C8-707-C8-708
DOI: 10.1051/jphyscol:19888320
1 Inst. f. Theor. Physik, Universität Frankfurt a.M., Robert-Mayer-Straße 8-10, D-6000 Frankfurt, F.R.G.
2 Institut für Festkörperphysik, Technische Hochschule Darmstadt, Hochschulstraße 2, D-6100 Darmstadt, F.R.G.
3 Max-Planck-Institut für Plasmaphysik, Boltzmannstraße 2, D-8046 Garching, F.R.G.
J. Phys. Colloques 49 (1988) C8-707-C8-708
DOI: 10.1051/jphyscol:19888320
FERRO- AND ANTIFERROMAGNETISM IN 4f-SYSTEMS WITH VALENCE INSTABILITIES
G. Bulk1, V. Eyert2 et W. Nolting31 Inst. f. Theor. Physik, Universität Frankfurt a.M., Robert-Mayer-Straße 8-10, D-6000 Frankfurt, F.R.G.
2 Institut für Festkörperphysik, Technische Hochschule Darmstadt, Hochschulstraße 2, D-6100 Darmstadt, F.R.G.
3 Max-Planck-Institut für Plasmaphysik, Boltzmannstraße 2, D-8046 Garching, F.R.G.
Abstract
The stability of ferro- and antiferromagnetism in 4f-systems with valence fluctuations between magnetic and nonmagnetic configurations is investigated in the framework of an extended s-f model. Intensifying the electronic transitions by varying the s-f hybridization or the 4f-level position tends to quench the local magnetic 4f-moments and, competingly, the enhance the coupling between them. This leads to a characteristic behaviour of the order temperature.