M{umlt o}ssbauer study of the magnetic properties of RFe{sub 6}Sn{sub 6} compounds (R=Y, Gd, Tb, Dy, Ho, Er, Tm)

Journal Article · Tue Apr 01 00:00:00 EST 1997 · Journal of Applied Physics

DOI:https://doi.org/10.1063/1.365164· OSTI ID:496568

Rao, X; Coey, J M ^[1]

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1. Department of Physics, Trinity College Dublin, Dublin 2 (Ireland)

Magnetic properties of RFe{sub 6}Sn{sub 6} compounds (R=Y, Gd, Tb, Dy, Ho, Er, Tm) have been studied by magnetization and M{umlt o}ssbauer spectroscopy. Magnetization curves of isotropic powder samples at room temperature show a linear response up to 1.1 T with a susceptibility of 0.003{endash}0.006 while M{umlt o}ssbauer spectra indicate magnetic order of Fe. These results confirm antiferromagnetic ordering of the compounds below a N{acute e}els point of approximately 400 K. The hyperfine fields of Fe at 25 K are {approximately}22 T, 45{percent} greater than that for the isostructural FeSn although the difference in volume is only 3{percent}. X-ray diffraction and M{umlt o}ssbauer spectra measured on magnetically oriented samples show that strong easy {ital c}-axis anisotropy of Fe sublattice dominates the anisotropy of these intermetallic compounds for any of the rare earth elements. A large quadrupole shift ({approximately}0.30 mm/s at room temperature and 0.36 mm/s at 25 K) is consistent with the strong Fe sublattice anisotropy. The first anisotropy constant K{sub 1} was estimated to be of order 1.5{times}10{sup 6} J/m{sup 3}. {copyright}{ital 1997 American Institute of Physics.}

• OSTI ID: 496568
• Report Number(s): CONF-961141-; ISSN 0021-8979; TRN: 97:016258
• Journal Information: Journal of Applied Physics, Vol. 81, Issue 8; Conference: 41. annual conference on magnetism and magnetic materials, Atlanta, GA (United States), 12-15 Nov 1996; Other Information: PBD: Apr 1997
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
66 PHYSICS
YTTRIUM COMPOUNDS
MAGNETIC PROPERTIES
GADOLINIUM COMPOUNDS
TERBIUM COMPOUNDS
DYSPROSIUM COMPOUNDS
HOLMIUM COMPOUNDS
THULIUM COMPOUNDS
RARE EARTH ALLOYS
IRON ALLOYS
TIN ALLOYS
ANTIFERROMAGNETIC MATERIALS
NEEL TEMPERATURE
X-RAY DIFFRACTION
MAGNETIC SUSCEPTIBILITY
IRON COMPOUNDS
TIN COMPOUNDS
MOESSBAUER EFFECT
MAGNETIZATION
ANISOTROPY