Magnetic susceptibilities of UO/sub 2/-ZrO/sub 2/ solid solutions

Journal Article · Fri Nov 15 04:00:00 EST 1985 · J. Solid State Chem.; (United States)

DOI:https://doi.org/10.1016/0022-4596(85)90118-5· OSTI ID:6443693

Hinatsu, Y; Fujino, T

The magnetic susceptibility of cubic solid solutions of UO/sub 2/ and ZrO/sub 2/ with a fluorite structure has been measured from room temperature to 2.3 K. The magnetic moment and the Weiss constant have been determined in the temperature range where the Curie-Weiss law holds. These values decrease monotonically with increasing ZrO/sub 2/ concentration. The solid solutions of UO/sub 2/ diluted with 0 approx. 20 mole% ZrO/sub 2/ show an antiferromagnetic transition and have a linear dependence of Neel temperature on concentration, with a critical concentration of 78 mole% UO/sub 2/. The molecular field theory which includes next-nearest-neighbor interaction was applied to the results. The interaction between nearest-neighbor spins, J/sub 1/, decreases with increasing ZrO/sub 2/ concentration, whereas that between next-nearest-neighbor spins, J/sub 2/, increases. The behavior of J/sub 1/ against composition is thought to be caused from the direct effect of magnetic dilution with ZrO/sub 2/. Regarding the behavior of J/sub 2/, the effect of increasing magnetic interaction due to the smaller distance of uranium ions is considered to be stronger than the magnetic dilution effect.

• Research Organization: Japan Atomic Energy Research Institute, Tokoi-mura
• OSTI ID: 6443693
• Journal Information: J. Solid State Chem.; (United States), Journal Name: J. Solid State Chem.; (United States) Vol. 60:2; ISSN JSSCB
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
38 RADIATION CHEMISTRY, RADIOCHEMISTRY, AND NUCLEAR CHEMISTRY
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400702* -- Radiochemistry & Nuclear Chemistry-- Properties of Radioactive Materials
ACTINIDE COMPOUNDS
CHALCOGENIDES
DATA
DISPERSIONS
EXPERIMENTAL DATA
INFORMATION
MAGNETIC PROPERTIES
MAGNETIC SUSCEPTIBILITY
MIXTURES
NUMERICAL DATA
OXIDES
OXYGEN COMPOUNDS
PHYSICAL PROPERTIES
SOLID SOLUTIONS
SOLUTIONS
TRANSITION ELEMENT COMPOUNDS
URANIUM COMPOUNDS
URANIUM DIOXIDE
URANIUM OXIDES
ZIRCONIUM COMPOUNDS
ZIRCONIUM OXIDES