Studies on magnetic properties of UO/sub 2/-CeO/sub 2/ solid solutions. II. Effect of oxygen nonstoichiometry on magnetic susceptibilities of solid solutions

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

DOI:https://doi.org/10.1016/0022-4596(88)90199-5· OSTI ID:7045923

Hinatsu, Y; Fujino, T

Magnetic susceptibilities of Ce/sub y/U/sub 1-y/O/sub 2+x/ (x > less than or equal to< 0) solid solutions with fluorite structure were measured from 4.2 K to room temperature. An antiferromagnetic transition was observed for the oxygen-stoichiometric (x = 0) and deficient (x < 0) solid solutions with y values less than 0.40. The Neel temperatures of oxygen-deficient solid solutions are lower than those of oxygen-stoichiometric solid solutions with the same y value, which indicates that the formation of oxygen vacancies results in weakening the magnetic interactions between uranium ions. From the analysis of magnetic susceptibility data, it was found that some cerium ions are reduced to trivalent state for oxygen-deficient solid solutions, while some uranium ions are oxidized to pentavalent state for oxygen-excessive solid solutions.

• Research Organization: Japan Atomic Energy Research Institute, Ibaraki
• OSTI ID: 7045923
• Journal Information: J. Solid State Chem.; (United States), Journal Name: J. Solid State Chem.; (United States) Vol. 76:1; ISSN JSSCB
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360204* -- Ceramics
Cermets
&amp; Refractories-- Physical Properties
ACTINIDE COMPOUNDS
ANTIFERROMAGNETISM
CERIUM COMPOUNDS
CERIUM OXIDES
CHALCOGENIDES
DATA
DISPERSIONS
ELEMENTS
EXPERIMENTAL DATA
INFORMATION
MAGNETIC PROPERTIES
MAGNETIC SUSCEPTIBILITY
MAGNETISM
MIXTURES
NEEL TEMPERATURE
NONMETALS
NUMERICAL DATA
OXIDES
OXYGEN
OXYGEN COMPOUNDS
PHYSICAL PROPERTIES
RARE EARTH COMPOUNDS
SOLID SOLUTIONS
SOLUTIONS
STOICHIOMETRY
THERMODYNAMIC PROPERTIES
TRANSITION TEMPERATURE
URANIUM COMPOUNDS
URANIUM OXIDES