Magnetism of californium metal
Magnetic susceptibility measurements have been made on samples of californium-249 metal having the dhcp crystal structure. At temperatures between 100K and 300K and at fields up to 50 kilogauss, the samples exhibit Curie-Weiss behavior with 3 samples giving a magnetic moment per atom of ..mu../sub eff/ = 10.6 +- 0.2 ..mu../sub B/ and paramagnetic Weiss temperatures, theta/sub p/, in the range of -2K to -41K. These values of ..mu../sub eff/ are in good agreement with the value expected (10.62..mu../sub B/) for a free-ion 5f/sup 9/ configuration based on an L-S coupling scheme and Hund's Rule. A fourth sample gives the values ..mu../sub eff/ = 9.7 +- 0.2..mu../sub B/ and theta/sub p/ = -41K. At low temperatures the samples exhibit an ordered magnetic transition to a state with a saturated moment of 6.1 ..mu../sub B//atom when extrapolated to infinitely-high field. The low temperature ordered phase exists at temperatures below T/sub c/ = 51 +- 2K as determined from constant magnetization plots. 2 references, 3 figures.
- Research Organization:
- Tennessee Univ., Knoxville (USA). Dept. of Physics; Oak Ridge National Lab., TN (USA)
- DOE Contract Number:
- AC05-84OR21400; AS05-79ER10348
- OSTI ID:
- 6769809
- Report Number(s):
- CONF-8409102-4; ON: DE85001141
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
360102* -- Metals & Alloys-- Structure & Phase Studies
640302 -- Atomic
Molecular & Chemical Physics-- Atomic & Molecular Properties & Theory
74 ATOMIC AND MOLECULAR PHYSICS
ACTINIDE ISOTOPES
ACTINIDE NUCLEI
ALPHA DECAY RADIOISOTOPES
CALIFORNIUM 249
CALIFORNIUM ISOTOPES
COUPLING
CRYSTAL STRUCTURE
CURIE-WEISS LAW
DATA
EVEN-ODD NUCLEI
EXPERIMENTAL DATA
HEAVY NUCLEI
INFORMATION
INTERMEDIATE COUPLING
ISOTOPES
L-S COUPLING
MAGNETIC PROPERTIES
MAGNETIC SUSCEPTIBILITY
MEDIUM TEMPERATURE
NUCLEI
NUMERICAL DATA
PHYSICAL PROPERTIES
RADIOISOTOPES
YEARS LIVING RADIOISOTOPES