Theory of variation from localized to itinerant magnetism in cubic intermetallic actinide compounds

Conference · Thu Jan 01 00:00:00 EST 1976 · AIP (Am. Inst. Phys.) Conf. Proc.; (United States)

OSTI ID:7230910

Robinson, J M

The Fermion excitation spectrum of a cubic crystal of actinide ions with partly filled 5f shells is derived. The crystal field and intraatomic interactions are assumed to be large compared with the one-electron interatomic hopping energy, so that Hubbard's ''atomic representation'' is valid. The magnetic moment, the magnetic susceptibility, and the fractional valence of the actinide ions are calculated as functions of the temperature, the external (or internal) magnetic field, and the f-f hopping energy. Assuming that the latter energy increases with decreasing lattice constant, results in qualitative agreement are found with the variation from localized to itinerant magnetic behavior observed in intermetallic actinide compounds.

• Research Organization: Indiana Univ., Fort Wayne
• OSTI ID: 7230910
• Journal Information: AIP (Am. Inst. Phys.) Conf. Proc.; (United States), Vol. 34; Conference: Joint international magnetism and magnetic materials intermag conference, Pittsburgh, PA, USA, 15 Jun 1976; Other Information: See CONF-760619--
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
ACTINIDE ALLOYS
MAGNETIC PROPERTIES
BINARY ALLOY SYSTEMS
CUBIC LATTICES
EXCITATION
INTERMETALLIC COMPOUNDS
MAGNETIC FIELDS
MAGNETIC SUSCEPTIBILITY
TEMPERATURE DEPENDENCE
VALENCE
ALLOY SYSTEMS
ALLOYS
CRYSTAL LATTICES
CRYSTAL STRUCTURE
ENERGY-LEVEL TRANSITIONS
PHYSICAL PROPERTIES
360104* - Metals & Alloys- Physical Properties