Crystal-field anisotropy in the magnetic susceptibility of single-crystal CfCl/sub 3/

Journal Article · Mon Aug 01 04:00:00 EDT 1988 · Phys. Rev. B: Condens. Matter; (United States)

OSTI ID:6910552

Nave, S E; Hart, R C; Wilmarth, W R; Haire, R G; Peterson, J R

The magnetic susceptibilities of polycrystalline samples of CfCl/sub 3/ in both the hexagonal (UCl/sub 3/ type) and orthorhombic (PuBr/sub 3/ type) crystal structures as well as of single-crystal samples of the hexagonal structure have been measured. Measurements were performed at temperatures between 4.4 and 340 K and in magnetic fields of up to 50 kG. Above 100 K, the polycrystalline samples exhibit Curie-Weiss behavior with an effective paramagnetic moment of 10.2..mu../sub B/, which is in agreement with an intermediate-coupling model of the electronic structure. Both structures also show metamagnetic behavior with Neel temperatures of 7 and 13 K for the hexagonal and orthorhombic structures, respectively. Single crystals of the hexagonal form of CfCl/sub 3/ were grown using a modified Bridgman technique. The measured anisotropy in the magnetic susceptibility is consistent with the anisotropy due to the crystal-field splitting, as determined from optical-absorption measurements, if the effects of the antiferromagnetic ordering are included. Magnetization measurements at 4.4 K, as a function of magnetic field up to 50 kG, are also consistent with the electronic wave functions and energies predicted by optical-absorption spectroscopy.

• Research Organization: Department of Physics, University of Tennessee, Knoxville, Tennessee 37996-1200
• OSTI ID: 6910552
• Journal Information: Phys. Rev. B: Condens. Matter; (United States), Journal Name: Phys. Rev. B: Condens. Matter; (United States) Vol. 38:4; ISSN PRBMD
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360603* -- Materials-- Properties
ABSORPTIVITY
ACTINIDE COMPOUNDS
ANISOTROPY
CALIFORNIUM CHLORIDES
CALIFORNIUM COMPOUNDS
CHLORIDES
CHLORINE COMPOUNDS
CRYSTAL FIELD
CRYSTAL LATTICES
CRYSTAL STRUCTURE
CRYSTALS
CURIE-WEISS LAW
ELECTRONIC STRUCTURE
HALIDES
HALOGEN COMPOUNDS
HEXAGONAL LATTICES
LOW TEMPERATURE
MAGNETIC FIELDS
MAGNETIC PROPERTIES
MAGNETIC SUSCEPTIBILITY
MAGNETIZATION
MEDIUM TEMPERATURE
MONOCRYSTALS
NEEL TEMPERATURE
OPTICAL PROPERTIES
ORTHORHOMBIC LATTICES
PHYSICAL PROPERTIES
POLYCRYSTALS
THERMODYNAMIC PROPERTIES
TRANSITION TEMPERATURE
TRANSPLUTONIUM COMPOUNDS
TRANSURANIUM COMPOUNDS
ULTRALOW TEMPERATURE
VERY LOW TEMPERATURE