High-field magnetization processes in actinide intermetallics (invited)

Journal Article · Mon Apr 15 00:00:00 EDT 1991 · Journal of Applied Physics; (USA)

DOI:https://doi.org/10.1063/1.347834· OSTI ID:5594371

Franse, J J.M.; de Boer, F R; de Chatel, P F; Frings, P H; Menovsky, A A ^[1]

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1. Natuurkundig Laboratorium, University of Amsterdam, Valckenierstraat 65, 1018 XE Amsterdam, The Netherlands (NL)

In magnetically ordered intermetallics of uranium with {ital d} transition elements, the magnetic moment on the uranium site is often limited to values below 0.1{mu}{sub {ital B}}, with, in some cases, extremely large magnetic anisotropies. Several approaches are followed for explaining these small uranium moments: opposite directions and almost compensation of the spin and orbital moments, reduction of the uranium 5{ital f} moment by strong hybridization effects between the 5{ital f} and conduction electrons, and very weak itinerant magnetism of the 5{ital f} electrons. In the Laves-phase compounds UFe{sub 2} and UNi{sub 2}, the magnetic data have been explained in terms of opposite spin and orbital moments on the uranium sites. In the heavy-fermion compounds UPt{sub 3} and URu{sub 2}Si{sub 2}, on the contrary, a Kondo approach is followed, although coherence effects largely complicate a proper description. The experimental evidence for these different approaches will be reviewed.

• OSTI ID: 5594371
• Journal Information: Journal of Applied Physics; (USA), Journal Name: Journal of Applied Physics; (USA) Vol. 69:8; ISSN 0021-8979; ISSN JAPIA
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360104* -- Metals & Alloys-- Physical Properties
ACTINIDE COMPOUNDS
ALLOYS
ANISOTROPY
BAND THEORY
HYBRIDIZATION
INTERMETALLIC COMPOUNDS
IRON COMPOUNDS
KONDO EFFECT
LAVES PHASES
MAGNETIC FIELDS
MAGNETIC MOMENTS
MAGNETIZATION
NICKEL COMPOUNDS
TRANSITION ELEMENT COMPOUNDS
URANIUM COMPOUNDS