Random anisotropy and domain-wall pinning process in the magnetic properties of rapidly quenched Nd60Fe30Al10
- 1. Department of Chemical Engineering and Materials Science, University of California, Davis, California 95616 (United States)
- 2. IV. Physikalisches Institut, Georg-August-Universitaet Goettingen, 37073 Goettingen (Germany)
- 3. I. Physikalisches Institut, Georg-August-Universitaet Goettingen, 37073 Goettingen (Germany)
Description
The magnetic properties and microstructure of glassy Nd60Fe30Al10 splat-quenched samples have been investigated by small-angle neutron scattering, Moessbauer spectroscopy, and vibrating sample magnetometry. The presence of chemical inhomogeneities in the amorphous sample is evidenced by small-angle neutron scattering which indicates a complex network of atom clusters with an average diameter of 15 nm. These results are confirmed by the magnetization measurements which show the coexistence of two magnetic phases with different ordering temperatures and indicate phases separation in rapidly quenched Nd60Fe30Al10 samples. Magnetic neutron scattering analysis reveals magnetic correlation volumes in the ferromagnetic phase of about 34 nm in diameter. Random anisotropy and a domain-wall pinning process within the two phases are discussed to explain the magnetic properties of amorphous Nd60Fe30Al10
Additional details
Identifiers
- DOI
- 10.1063/1.1544430;
Publishing Information
- Journal Title
- Applied Physics Letters
- Journal Volume
- 82
- Journal Issue
- 5
- Journal Page Range
- p. 721-723
- ISSN
- 0003-6951
- CODEN
- APPLAB
INIS
- Country of Publication
- United States
- Country of Input or Organization
- International Atomic Energy Agency (IAEA)
- INIS RN
- 35041600
- Subject category
- S36: MATERIALS SCIENCE; S71: CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS;
- Descriptors DEI
- ALUMINIUM ALLOYS; AMORPHOUS STATE; ANISOTROPY; CURIE POINT; DOMAIN STRUCTURE; FERROMAGNETIC MATERIALS; IRON ALLOYS; MAGNETIC MATERIALS; MAGNETIC PROPERTIES; MAGNETIZATION; METALLIC GLASSES; MICROSTRUCTURE; MOESSBAUER EFFECT; NEODYMIUM ALLOYS; NEUTRON DIFFRACTION; PERMANENT MAGNETS; PHASE TRANSFORMATIONS; SOLIDIFICATION
- Descriptors DEC
- ALLOYS; COHERENT SCATTERING; DIFFRACTION; EQUIPMENT; MAGNETIC MATERIALS; MAGNETS; MATERIALS; PHASE TRANSFORMATIONS; PHYSICAL PROPERTIES; RARE EARTH ALLOYS; SCATTERING; THERMODYNAMIC PROPERTIES; TRANSITION ELEMENT ALLOYS; TRANSITION TEMPERATURE
Optional Information
- Notes
- (c) 2003 American Institute of Physics.