Actinide 5f systems: experimental determination of the magnetic response function
Conference
·
OSTI ID:5583019
Understanding of metallic actinide systems is in confusion. Searches for crystal-field levels with neutron spectroscopy have, for the most part, been unsuccessful, despite the acknowledged importance of the 5f electrons in determining the magnetic behavior. In systems such as UAl/sub 2/, USn/sub 3/ and UN a broad response function, S(Q vector,..omega..), reminiscent of that found in intermediate valent compounds, exists. Neutron inelastic scattering experiments on single crystals have shown the small influence of the crystal field. Instead we find an unusual response function dominated by the longitudinal susceptibility chi/sup zz/(Q vector,,..omega..) such that transverse excitations - conventional spin waves - do not exist at low energies. As yet a detailed theoretical interpretation of the measurements does not exist. Indeed, the small, although not necessarily negligible, role of the crystal field presents conceptual difficulties if we anticipate behavior analogous to that found in many lanthanide 4f systems. Some alternate approaches are discussed.
- Research Organization:
- Argonne National Lab., IL (USA)
- DOE Contract Number:
- W-31109-ENG-38
- OSTI ID:
- 5583019
- Report Number(s):
- CONF-791142-6
- Country of Publication:
- United States
- Language:
- English
Similar Records
Summary of experimental work
Electronic properties of UX{sub 3} (X=Ga, Al, and Sn) compounds in high magnetic fields: Transport, specific heat, magnetization, and quantum oscillations
Magnetic response functions in actinide compounds
Journal Article
·
Mon Dec 31 23:00:00 EST 1979
· Physics; (United States)
·
OSTI ID:6277009
Electronic properties of UX{sub 3} (X=Ga, Al, and Sn) compounds in high magnetic fields: Transport, specific heat, magnetization, and quantum oscillations
Journal Article
·
Tue Jun 01 00:00:00 EDT 1999
· Physical Review, B: Condensed Matter
·
OSTI ID:345421
Magnetic response functions in actinide compounds
Conference
·
Tue Dec 31 23:00:00 EST 1985
·
OSTI ID:5443903
Related Subjects
36 MATERIALS SCIENCE
360104* -- Metals & Alloys-- Physical Properties
360204 -- Ceramics
Cermets
& Refractories-- Physical Properties
440103 -- Radiation Instrumentation-- Nuclear Spectroscopic Instrumentation
46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY
ACTINIDE ALLOYS
ACTINIDE COMPOUNDS
ALLOYS
ALUMINIUM ALLOYS
ARSENIC ALLOYS
CRYSTAL FIELD
ENERGY LOSSES
FUNCTIONS
INTERMETALLIC COMPOUNDS
LANTHANUM ALLOYS
LOSSES
NEUTRON SPECTROSCOPY
NITRIDES
NITROGEN COMPOUNDS
PNICTIDES
RARE EARTH ALLOYS
RESPONSE FUNCTIONS
SPECTROSCOPY
TIN ALLOYS
URANIUM ALLOYS
URANIUM COMPOUNDS
URANIUM NITRIDES
360104* -- Metals & Alloys-- Physical Properties
360204 -- Ceramics
Cermets
& Refractories-- Physical Properties
440103 -- Radiation Instrumentation-- Nuclear Spectroscopic Instrumentation
46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY
ACTINIDE ALLOYS
ACTINIDE COMPOUNDS
ALLOYS
ALUMINIUM ALLOYS
ARSENIC ALLOYS
CRYSTAL FIELD
ENERGY LOSSES
FUNCTIONS
INTERMETALLIC COMPOUNDS
LANTHANUM ALLOYS
LOSSES
NEUTRON SPECTROSCOPY
NITRIDES
NITROGEN COMPOUNDS
PNICTIDES
RARE EARTH ALLOYS
RESPONSE FUNCTIONS
SPECTROSCOPY
TIN ALLOYS
URANIUM ALLOYS
URANIUM COMPOUNDS
URANIUM NITRIDES