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The uranium compounds exhibit an interesting range of magnetic properties from ferromagnetism in the monochalcogenides to antiferromagnetism in the monopnictides. The spin dynamics of these UX compounds are sensitive to hybridisation between 5f and conduction band electrons. In order to investigate this hybridisation further, a mixed crystal of USb(0.8)Te(0.2) has been studied. The system orders ferromagnetically, with the magnetic moments aligned along the [1 1 1] easy direction. An analysis of spin-wave results gives an E(0) value of 7.5 THz, which implies a value for the K(1) coefficient which exceeds the highest known anisotropy in a cubic rare earth material by a factor of almost 10. The width of the critical scattering peak at 206 K corresponds to very short correlation lengths within the (0 0 1) planes and suggests a large correlation length anisotropy.

Additional information

Authors: LANGRIDGE S, University of Keele, Department of Physics (GB);STIRLING W G, University of Keele, Department of Physics (GB);LANDER G H, JRC Karlsruhe (DE);VOGT O, ETH, Laboratorium für Festkörperphysik, Zürich (CH)
Bibliographic Reference: Paper presented: International Conference on Neutron Scattering, Oxford (GB), Aug. 27-30, 1991
Availability: Available from (1) as Paper EN 36399 ORA
Record Number: 199111450 / Last updated on: 1994-12-02
Original language: en
Available languages: en
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