Spin fluctuation and single-ion effects in dilute UPt[sub 3]

Journal Article · Mon Feb 01 04:00:00 EST 1993 · Physical Review, B: Condensed Matter; (United States)

DOI:https://doi.org/10.1103/PhysRevB.47.3204· OSTI ID:6951060

Fraunberger, G ^[1]; Baldus, M ^[2]; Stewart, G R ^[3]

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1. Institut fuer Physik, Universitaet Augsburg, D-8900 Augsburg (Germany)
2. Department of Physics, University of Florida, Gainesville, Florida 32611 (United States)
3. Institut fuer Physik, Universitaet Augsburg, D-8900 Augsburg (Germany) Department of Physics, University of Florida, Gainesville, Florida 32611 (United States)

Single-ion effects are responsible for about 50% of the high [gamma] (==[ital C]/[ital T] for [ital T][r arrow]0) in UPt[sub 3]. Diluting uranium in UPt[sub 3] also shows that, contrary to usual expectations, [gamma] and the low-temperature magnetic susceptibility [chi] do not seem to be strongly correlated. It is remarkable that the spin-fluctuation term ([ital T][sup 3] ln[ital T]) in the low-temperature specific heat still appears, even down to a concentration of only 4% uranium. Comparisons to the doped heavy-fermion system U[sub 1[minus][ital x]M[ital x]]Be[sub 13] (with large [ital x]) are made.

• DOE Contract Number: FG05-86ER45268
• OSTI ID: 6951060
• Journal Information: Physical Review, B: Condensed Matter; (United States), Journal Name: Physical Review, B: Condensed Matter; (United States) Vol. 47:6; ISSN PRBMDO; ISSN 0163-1829
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360104* -- Metals & Alloys-- Physical Properties
ACTINIDE COMPOUNDS
ALLOY SYSTEMS
ALLOYS
BINARY ALLOY SYSTEMS
INTERMETALLIC COMPOUNDS
MAGNETIC PROPERTIES
PHYSICAL PROPERTIES
PLATINUM COMPOUNDS
SPECIFIC HEAT
TEMPERATURE EFFECTS
THERMODYNAMIC PROPERTIES
TRANSITION ELEMENT COMPOUNDS
URANIUM COMPOUNDS