Numéro
J. Phys. Colloques
Volume 49, Numéro C8, Décembre 1988
Proceedings of the International Conference on Magnetism
Page(s) C8-335 - C8-336
DOI https://doi.org/10.1051/jphyscol:19888149
Proceedings of the International Conference on Magnetism

J. Phys. Colloques 49 (1988) C8-335-C8-336

DOI: 10.1051/jphyscol:19888149

MAGNETIC EXCITATIONS IN THULIUM

K. A. McEwen1 et U. Steigenberger2

1  Department of Physics, Birkbeck College, University of London, Malet Street, London WC1E 7HX, G.B.
2  Neutron Division, Rutherford Appleton Laboratory Chilton, Didcot, Ozon OX11 0QX, G.B.


Abstract
We have observed, for the first time, magnetic excitations in a single crystal of thulium, using inelastic neutron spectroscopy. In the ferromagnetic phase three modes with energies around 4 meV, 8 meV and 15 meV were clearly seen. We have considered our results in terms of crystal field level schemes for thulium.