Hyperfine Interactions in Rare-Earth Metals

Journal Article · Tue Jan 01 04:00:00 EST 1963 · Journal of Applied Physics

DOI:https://doi.org/10.1063/1.1729355· OSTI ID:4636040

Bleaney, B.

Estimates of the hyperfine interaction constants for the rare-earth metals are compiled from electron spin resonance and electron-nuclear double resonance data on salts and atomic beam measurements on free atoms. Correction terms for second-order effects of the hyperfine structure are considered and shown generally to be small. Comparison with the experimental data shows close agreement in all cases except praseodymium, which is known not to have a co- operative phase. The temperature independent susceptibility of this metal below 4 deg K can be explained using a ferromagnetic exchange interaction of reasonable size, and the source of the observed hyperfine specific heat is discussed. In neodymium and samarium it is likely that crystal field effects are more important than exchange in determining the ground state in the co-operative phase. (auth)

• Research Organization: Univ. of Pittsburgh
• Sponsoring Organization: USDOE
• NSA Number: NSA-17-037686
• OSTI ID: 4636040
• Journal Information: Journal of Applied Physics, Journal Name: Journal of Applied Physics Journal Issue: 4 Vol. 34; ISSN JAPIAU; ISSN 0021-8979
• Publisher: American Institute of Physics (AIP)
• Country of Publication: Country unknown/Code not available
• Language: English

Related Subjects

75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
ATOMS
BEAMS
CRYSTALS
ELECTRONS
EXCHANGE INTERACTIONS
FERROMAGNETIC MATERIALS
HYPERFINE STRUCTURE
INTERACTIONS
MAGNETIC FIELDS
MAGNETISM
MEASURED VALUES
NEODYMIUM
NUCLEI
PRASEODYMIUM
QUANTUM MECHANICS
RARE EARTHS
RESONANCE
SALTS
SAMARIUM
SPECIFIC HEAT
SPIN
SUSCEPTIBILITY
TEMPERATURE