Magnetic Characteristics of Hydrogenated Holmium

Journal Article · Mon Jan 01 04:00:00 EST 1962 · Journal of Applied Physics

DOI:https://doi.org/10.1063/1.1728724· OSTI ID:4786920

Kubota, Y.; Wallace, W. E.

Various physical and chemical properties of the lanthanide hydrides suggest that they are saline in nature, the hydrogen existing as a negatively charged ion. These properties further suggest that the anionic charge is obtained from the conduction band of the lanthanide and that in the fully hydrogenated metal the conduction band is completely depopulated. Since coupling of the lanthanides occurs via the conduction electrons, this should lead to considerable suppression of the interactions in the hydrides compared to the element, but an unchanged effective atomic moment. To determine whether this is the case, susceptibility measurements are made on nine Ho- H alloys. These show for the dihydride, which still coatains some conduction electrons, a Neel point at around 8 deg K (instead of 135 deg K for the element), whereas for the trihydride, which lacks conduction electrons, no Neel point is observed down to 4 deg K. Curie-Weiss law with a much smaller Weiss constant than that for elemental holmium. The atomic moment is found, however, to be virtually unaffected by hydrogenation.

• Research Organization: Univ. of Pittsburgh
• Sponsoring Organization: USDOE
• NSA Number: NSA-16-016840
• OSTI ID: 4786920
• Journal Information: Journal of Applied Physics, Journal Name: Journal of Applied Physics Journal Issue: 3 Vol. 33; ISSN JAPIAU; ISSN 0021-8979
• Publisher: American Institute of Physics (AIP)
• Country of Publication: Country unknown/Code not available
• Language: English

Related Subjects

71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
ANIONS
ANTIFERROMAGNETISM
ATOMS
CATIONS
CHEMICALS
CURIE POINT
CURIE-WEISS LAW
ELECTRIC CHARGES
ELECTRONS
ELEMENTS
ENERGY LEVELS
FERROMAGNETIC MATERIALS
HOLMIUM ALLOYS
HOLMIUM HYDRIDES
HYDRIDES
HYDROGEN
HYDROGENATION
INTERACTIONS
LOW TEMPERATURE
MAGNETIC MATERIALS
MAGNETIC MOMENTS
MAGNETISM
MEASURED VALUES
METALS
NEEL TEMPERATURE
QUANTITY RATIO
RARE EARTHS
SALTS
SOLIDS
STATISTICS
SUSCEPTIBILITY
TEMPERATURE