Magnetic susceptibilities of UO/sub 2/-Pr/sub 2/O/sub 3/ solid solutions

Journal Article · Sun May 01 04:00:00 EDT 1988 · J. Solid State Chem.; (United States)

DOI:https://doi.org/10.1016/0022-4596(88)90342-8· OSTI ID:7009056

Hinatsu, Y; Fujino, T

Magnetic susceptibilities of Pr/sub y/U/sub 1-y/O/sub 2+x/ solid solutions (y less than or equal to 0.1) with fluorite-type structure were measured from 4.2 K to room temperature. From the analysis of the magnetic susceptibility data, it was found that the oxidation state of uranium was tetravalent or pentavalent and that of praseodymium was trivalent. The susceptibilities of oxygen-stoichiometric solid solution (Pr/sub y/U/sub 1-y/O/sub 2/) increased with Pr concentration (y) in the whole temperature range measured, indicating the magnetic moment of Pr/sup 3 +/ is larger than that of U/sup 4 +/. The susceptibilities of solid solutions with low Pr concentrations (y less than or equal to 0.07) increased with decreasing temperature down to ca. 31 K, and showed discontinuous change (susceptibility drop) at ca. 30-31 K (T/sub d/ temperature). Below this temperature, after a little decrease, the magnetic susceptibilities increased again with decreasing temperature. This increase of susceptibility below T/sub d/ temperature is considered to be due to the U/sup 5 +/ ion formed in the solid solutions.

• Research Organization: Japan Atomic Energy Research Institute, Ibaraki
• OSTI ID: 7009056
• Journal Information: J. Solid State Chem.; (United States), Journal Name: J. Solid State Chem.; (United States) Vol. 74:1; ISSN JSSCB
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360204* -- Ceramics
Cermets
& Refractories-- Physical Properties
ACTINIDE COMPOUNDS
CHALCOGENIDES
COHERENT SCATTERING
DATA
DIFFRACTION
DISPERSIONS
EXPERIMENTAL DATA
INFORMATION
LATTICE PARAMETERS
MAGNETIC PROPERTIES
MAGNETIC SUSCEPTIBILITY
MIXTURES
NUMERICAL DATA
OXIDES
OXYGEN COMPOUNDS
PHYSICAL PROPERTIES
PRASEODYMIUM COMPOUNDS
PRASEODYMIUM OXIDES
RARE EARTH COMPOUNDS
SCATTERING
SOLID SOLUTIONS
SOLUTIONS
TEMPERATURE DEPENDENCE
URANIUM COMPOUNDS
URANIUM OXIDES
X-RAY DIFFRACTION