High-field specific heat of the spin-fluctuation system UAl/sub 2/

Journal Article · Mon Aug 01 04:00:00 EDT 1983 · Phys. Rev. B: Condens. Matter; (United States)

DOI:https://doi.org/10.1103/PhysRevB.28.1524· OSTI ID:5729452

Stewart, G R; Giorgi, A L; Brandt, B L; Foner, S; Arko, A J

Measurements of the low-temperature specific heat, both in 0- and 7-T applied field, and magnetic susceptibility on polycrystalline, unannealed single-crystal and annealed single-crystal samples of UAl/sub 2/ show no sample dependence for these properties to +- 5%, in contrast to recent results for TiBe/sub 2/. Measurements of the specific heat of the annealed single crystal of UAl/sub 2/ from 2 to 23 K in fields to 12.5 T and from 4 to 16 K in fields to 17 T indicate a partial (approx.40%) suppression of the spin-fluctuation contribution, which occurs at 2 K in 12.5 T, and the possible existence of a small competing effect which increases the specific heat with increasing field above 4 K. These results are compared with recent magnetization and magnetoresistivity results which indicate suppression of spin fluctuations in UAl/sub 2/ between 15 and 20 T.

• Research Organization: Materials Science and Technology Division, Los Alamos National Laboratory, Los Alamos, New Mexico 87545
• OSTI ID: 5729452
• Journal Information: Phys. Rev. B: Condens. Matter; (United States), Journal Name: Phys. Rev. B: Condens. Matter; (United States) Vol. 28:3; ISSN PRBMD
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360104* -- Metals & Alloys-- Physical Properties
ACTINIDE ALLOYS
ALLOYS
ALUMINIUM ALLOYS
ANGULAR MOMENTUM
ANNEALING
CRYSTALS
DATA
ELECTRIC CONDUCTIVITY
ELECTRICAL PROPERTIES
ELECTRON-PHONON COUPLING
ENERGY-LEVEL DENSITY
EXPERIMENTAL DATA
FLUCTUATIONS
HEAT TREATMENTS
INFORMATION
INTERMETALLIC COMPOUNDS
MAGNETIC FIELDS
MAGNETIC PROPERTIES
MAGNETIC SUSCEPTIBILITY
MAGNETIZATION
MAGNETORESISTANCE
MONOCRYSTALS
NUMERICAL DATA
PARTICLE PROPERTIES
PHYSICAL PROPERTIES
POLYCRYSTALS
SPECIFIC HEAT
SPIN
THERMODYNAMIC PROPERTIES
ULTRALOW TEMPERATURE
URANIUM ALLOYS
URANIUM BASE ALLOYS
VARIATIONS
VERY LOW TEMPERATURE