Magnetic properties of single-crystalline UCu[sub 3]Al[sub 2]

Conference · Fri Jan 01 00:00:00 EST 1993

DOI:https://doi.org/10.1109/20.312226· OSTI ID:6310426

Nakotte, H; Brueck, E; Brabers, J H.V.J.; Prokes, K; de Boer, F R ^[1]; Sechovsky, V ^[2]; Buschow, K H.J. ^[3]; Andreev, A V ^[4]; Robinson, R A; Purwanto, A ^[5]

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1. Amsterdam Univ. (Netherlands). Van der Waals Lab.
2. Charles Univ., Prague (Czech Republic). Dept. of Metal Physics
3. Philips Research Labs., Eindhoven (Netherlands)
4. Ural State Univ., Ekaterinburg (Russian Federation)
5. Los Alamos National Lab., NM (Unite

UCu[sub 3]Al[sub 2] crystallizes in an ordered variant of the hexagonal CaCu[sub 5] structure. By neutron powder-diffraction, the U atoms were found to occupy the la sites, while the 2c sites are occupied by Cu atoms only and a random occupation of the 3g sites by the remaining Cu and Al is found. The magnetic susceptibility, measured on a single crystal grown by the Czochralski tri-arc technique, is found to be maximal within the hexagonal basal plane with a maximum at about 10 K. For fields applied within the basal plane, the magnetization at 4.2 K exhibits a slight S-shape starting slightly below 15 T. No such anomalies are found for fields applied along the c-axis where the magnetic response is found to be much lower. No additional magnetic peaks, which could be related with long-range antiferromagnetic ordering, were detected in the neutron powder-patterns at low temperatures.

• Research Organization: Los Alamos National Laboratory (LANL), Los Alamos, NM (United States)
• Sponsoring Organization: USDOE; USDOE, Washington, DC (United States)
• DOE Contract Number: W-7405-ENG-36
• OSTI ID: 6310426
• Report Number(s): LA-UR-93-2170; CONF-930860-1; ON: DE93016607
• Resource Relation: Journal Volume: 30; Journal Issue: 2; Conference: European magnetic materials and applications conference, Kosice (Czechoslovakia), 24-27 Aug 1993
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
ALUMINIUM ALLOYS
MAGNETIC PROPERTIES
COPPER ALLOYS
URANIUM ALLOYS
INTERMETALLIC COMPOUNDS
MAGNETIC SUSCEPTIBILITY
MAGNETIZATION
MONOCRYSTALS
NEUTRON DIFFRACTION
TEMPERATURE DEPENDENCE
TERNARY ALLOY SYSTEMS
ACTINIDE ALLOYS
ALLOY SYSTEMS
ALLOYS
COHERENT SCATTERING
CRYSTALS
DIFFRACTION
PHYSICAL PROPERTIES
SCATTERING
360104* - Metals & Alloys- Physical Properties