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 · Mon Mar 31 23:00:00 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--
• Journal Information: Journal of Applied Physics, Journal Name: Journal of Applied Physics Journal Issue: 8 Vol. 81; ISSN JAPIAU; ISSN 0021-8979
• Country of Publication: United States
• Language: English

Related Subjects

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