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Abstract

This article reviews neutron scattering studies of the magnetic properties of actinide systems over the last 15 years, with particular emphasis on the work since 1984. The results obtained on the actinide dioxides UO(2), NpO(2) and PuO(2) at spallation sources and the recent observation of intermultiplet transitions in UPd(3) and UPt(3) are presented. Magnetisation densities are discussed, starting with an almost localised system such as PuSb, and continuing to more recent work on itinerant intermetallic systems such as UNi(2), UFe(2) and PuFe(2). In these latter systems the ratio of the orbital and spin moments may be determined by neutrons and compared to theory. Work on compounds with the NaCl crystal structure includes complex magnetic phase diagrams, as found for example in UAs and NpAs, the discussion of the results of critical scattering experiments, and inelastic neutron experiments on ferromagnets such as PuSb and UTe. Work on single crystals of U-containing heavy fermions is also presented. In these systems neutron scattering has been able to characterise the small magnetic moments and the nature of the magnetic correlations, which are frequency dependent.

Additional information

Authors: LANDER G H, JRC Karlsruhe (DE);AEPPLI G, AT&T Bell Laboratories, Murray Hill (US)
Bibliographic Reference: Article: Journal of Magnetism and Magnetic Materials, Vol. 100 (1991) pp. 151-172
Record Number: 199210416 / Last updated on: 1994-12-02
Category: PUBLICATION
Original language: en
Available languages: en