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Title: 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)

Abstract

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.}

Authors:
;  [1]
  1. Department of Physics, Trinity College Dublin, Dublin 2 (Ireland)
Publication Date:
OSTI Identifier:
496568
Report Number(s):
CONF-961141-
Journal ID: JAPIAU; ISSN 0021-8979; TRN: 97:016258
Resource Type:
Journal Article
Journal Name:
Journal of Applied Physics
Additional Journal Information:
Journal Volume: 81; Journal 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
Subject:
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

Citation Formats

Rao, X, and Coey, J M. 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). United States: N. p., 1997. Web. doi:10.1063/1.365164.
Rao, X, & Coey, J M. 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). United States. doi:10.1063/1.365164.
Rao, X, and Coey, J M. Tue . "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)". United States. doi:10.1063/1.365164.
@article{osti_496568,
title = {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)},
author = {Rao, X and Coey, J M},
abstractNote = {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.}},
doi = {10.1063/1.365164},
journal = {Journal of Applied Physics},
number = 8,
volume = 81,
place = {United States},
year = {1997},
month = {4}
}