Low-temperature specific heat and electrical resistivity of nearly ferromagnetic actinide systems within a coupled d and f band model

Journal Article · Fri Oct 01 00:00:00 EDT 1976 · J. Low Temp. Phys.; (United States)

DOI:https://doi.org/10.1007/BF00654824· OSTI ID:7332855

Iglesias-Sicardi, J R; Gomes, A A; Jullien, R; Coqblin, B

In order to describe nearly ferromagnetic actinide systems a spin-fluctuation model is presented which considers two narrow d and f bands and which takes into account the two-body d-f coupling parameter j/sub df/. The magnetic susceptibility, the ..gamma..-coefficient of the linear T term of the electronic specific heat, and the T/sup 2/ coefficient of the electrical resistivity are derived at low temperatures and a comparison with experiments is presented. This model improves the description of compounds such as UAl/sub 2/ and USn/sub 3/ with respect to previous single-f-band theories and yields an estimation of the enhancement factor of the low-temperature magnetic susceptibility in satisfactory agreement with experimental data.

• Research Organization: Laboratoire de Physique des Solides, Orsay, France
• OSTI ID: 7332855
• Journal Information: J. Low Temp. Phys.; (United States), Vol. 25:1/2
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
URANIUM ALLOYS
ELECTRIC CONDUCTIVITY
ELECTRONIC SPECIFIC HEAT
ALUMINIUM BASE ALLOYS
TIN BASE ALLOYS
BAND THEORY
COUPLING
FERROMAGNETIC MATERIALS
FLUCTUATIONS
MAGNETIC SUSCEPTIBILITY
SPIN
ULTRALOW TEMPERATURE
ACTINIDE ALLOYS
ALLOYS
ALUMINIUM ALLOYS
ANGULAR MOMENTUM
ELECTRICAL PROPERTIES
MAGNETIC MATERIALS
MAGNETIC PROPERTIES
MATERIALS
PARTICLE PROPERTIES
PHYSICAL PROPERTIES
SPECIFIC HEAT
THERMODYNAMIC PROPERTIES
TIN ALLOYS
VARIATIONS
360104* - Metals & Alloys- Physical Properties