Rare earth iron based magnet materials with the ThP sub 2 zn sub 17 -type structure

Journal Article · Sat Sep 01 00:00:00 EDT 1990 · IEEE Transactions on Magnetics (Institute of Electrical and Electronics Engineers); (USA)

DOI:https://doi.org/10.1109/20.104830· OSTI ID:5977950

Weitzer, F; Hiebl, k; Rogl, P ^[1]

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1. Inst. fur Physikalische Chemie der Universitat Wien, A01090 Wien, Wahringerstrsse 42 (AT)

The influence of the substitution mode on the magnetic behavior in Re{sup z}Fe{sup 17} has been investigated as a function of the metal substitution (Fe replaced by Mn, Al,Ga) and the accommodation of interstitial carbon atoms. X-ray powder analysis proved in all cases consistency with the rhombohedral Th{sup 2}Zn{sup 17}-type structure (space group R{bar 3}m). In correspondence with the resulting volume expansion, Curie temperatures tend to increase as a result of an enhanced ferromagnetic coupling mechanism. Sm{sup 2}Fe{sup 17 {minus} x {minus} y}Mnx(Al,Ga)y C{sup 3{minus}z}, however, is the only system where substitution of iron in Sm{sup 2}Fe{sup 17} by Mn, Al, Ga and/or carbon leads to an anisotropy change from easy plane to easy axis geometry. Magnetization values are strongly reduced due to a change of collinear ferromagnetism to a ferrimagnetic type of order of the various magnetic sublattices.

• OSTI ID: 5977950
• Journal Information: IEEE Transactions on Magnetics (Institute of Electrical and Electronics Engineers); (USA), Journal Name: IEEE Transactions on Magnetics (Institute of Electrical and Electronics Engineers); (USA) Journal Issue: 5 Vol. 26:5; ISSN IEMGA; ISSN 0018-9464
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360202 -- Ceramics
Cermets
& Refractories-- Structure & Phase Studies
360204* -- Ceramics
Cermets
& Refractories-- Physical Properties
640302 -- Atomic
Molecular & Chemical Physics-- Atomic & Molecular Properties & Theory
74 ATOMIC AND MOLECULAR PHYSICS
ALLOYS
ATOM TRANSPORT
CARBON
CHEMICAL COMPOSITION
COHERENT SCATTERING
COUPLING
CRYSTAL DOPING
CRYSTAL STRUCTURE
CURIE POINT
DIFFRACTION
ELEMENTS
FERROMAGNETIC MATERIALS
IRON
MAGNETIC MATERIALS
MAGNETIC PROPERTIES
MAGNETS
MANGANESE
MATERIALS
METALS
MICROSTRUCTURE
NEUTRAL-PARTICLE TRANSPORT
NONMETALS
PHYSICAL PROPERTIES
POWDERS
RADIATION TRANSPORT
RARE EARTH ALLOYS
RARE EARTHS
SAMARIUM
SCATTERING
THERMODYNAMIC PROPERTIES
TRANSITION ELEMENTS
TRANSITION TEMPERATURE
X-RAY DIFFRACTION