| Numéro |
J. Phys. Colloques
Volume 49, Numéro C8, Décembre 1988
Proceedings of the International Conference on Magnetism
|
|
|---|---|---|
| Page(s) | C8-1513 - C8-1514 | |
| DOI | https://doi.org/10.1051/jphyscol:19888697 | |
Proceedings of the International Conference on Magnetism
J. Phys. Colloques 49 (1988) C8-1513-C8-1514
DOI: 10.1051/jphyscol:19888697
1 Laboratorium für Neutronenstreuung ETHZ, 5303 Würenlingern, Switzerland
2 ILL, 38042 Grenoble, France
3 Institut für anorganische Chemie, Freiestrasse 3, 3000 Bern 9/Switzerland
J. Phys. Colloques 49 (1988) C8-1513-C8-1514
DOI: 10.1051/jphyscol:19888697
DIRECT OBSERVATION OF EXCHANGE SPLITTINGS IN RARE EARTH DIMERS BY INELASTIC NEUTRON SCATTERING
A. Dönni1, A. Furrer1, H. Blank2, A. Heidemann2 et H. U. Güdel31 Laboratorium für Neutronenstreuung ETHZ, 5303 Würenlingern, Switzerland
2 ILL, 38042 Grenoble, France
3 Institut für anorganische Chemie, Freiestrasse 3, 3000 Bern 9/Switzerland
Abstract
The crystal structures of the insulating dimer compounds Cs3R2Br9 (R = Tb3+, Dy3+, Ho3+, Er3+, Yb3+) were determined by neutron diffraction at 8 K and 295 K. Magnetic dimer excitations were measured by inelastic neutron scattering. Exchange splittings were thus directly determined. In the Tb3+, Dy3+ and Yb3+ dimers the interaction is of the Heisenberg type.