Small-angle neutron-scattering studies of Ce(Fe[sub 1[minus][ital x]]Al[sub [ital x]])[sub 2]

Journal Article · Sat May 15 04:00:00 EDT 1993 · Journal of Applied Physics; (United States)

DOI:https://doi.org/10.1063/1.353471· OSTI ID:6893548

Yang, Y S; Gaulin, B D ^[1]; Fernandez-Baca, J A ^[2]; Ali, N ^[3]; Wignall, G D ^[2]

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1. Department of Physics and Astronomy, McMaster University, Hamilton, Ontario, L8S 4M1 (Canada)
2. Solid State Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831-6393 (United States)
3. Department of Physics and Molecular Science, Southern Illinois University, Carbondale, Illinois 62901 (United States)

Ce(Fe[sub 1[minus][ital x]]Al[sub [ital x]])[sub 2], with [ital x]=0, 0.06, and 0.14, has been studied by small-angle neutron scattering in order to investigate the instability of the ferromagnetic state in the pure material to small amounts of magnetic disorder. The pure material ([ital x]=0) displays a ferromagnetic transition near [ital T][sub [ital C]]=225 K, and more complicated behavior below [similar to]100 K. The disordered alloys, [ital x]=0.06 and [ital x]=0.14, display ferromagnetic-like states over relatively narrow temperature ranges, and an additional low-temperature phase. The ferromagnetic-like state in the [ital x]=0.14 alloy appears to be qualitatively different from that exhibited by the other two. High-wave-vector-resolution measurements on the [ital x]=0.06 sample indicate that its low-temperature ordered phase is ferrimagnetic in origin.

• OSTI ID: 6893548
• Journal Information: Journal of Applied Physics; (United States), Journal Name: Journal of Applied Physics; (United States) Vol. 73:10; ISSN JAPIAU; ISSN 0021-8979
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360104* -- Metals & Alloys-- Physical Properties
ALLOYS
ALUMINIUM ALLOYS
CERIUM ALLOYS
COHERENT SCATTERING
DIFFRACTION
INSTABILITY
INTERMETALLIC COMPOUNDS
IRON ALLOYS
LAVES PHASES
MAGNETIC PROPERTIES
NEUTRON DIFFRACTION
PHASE TRANSFORMATIONS
PHYSICAL PROPERTIES
RARE EARTH ALLOYS
SCATTERING
SMALL ANGLE SCATTERING
TEMPERATURE EFFECTS