Neutron diffraction and 119Sn Mössbauer study of Sm3Ag4Sn4

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TypeArticle
Journal titleJournal Of Physics. Condensed Matter
ISSN09538984
Volume19
Issue43
Pages436205–; # of pages: 1
AbstractThe magnetic properties of Sm3Ag4Sn4 have been investigated using bulk magnetization, 119Sn Mössbauer spectroscopy and neutron diffraction. We find that the Néel temperature (TN) is 26.0(5) K, well above the value of [?]9 K previously determined using magnetic susceptibility measurements. Neutron diffraction data indicate that the Sm moments most likely adopt either the IPmm'm or IPmmm' magnetic space groups, neither of which allows order at the 2d site, in marked contrast to the vast majority of other compounds in the R3T4X4 family. Transferred hyperfine field models suggest that the IPmmm' is the only group that is consistent with the 119Sn Mössbauer results. We derive a samarium moment of 0.47 ± 0.10 mB on the Sm 4e site at 3 K. 119Sn Mössbauer spectroscopy shows that the system undergoes a spin reorientation transition at 8.3(3) K, where the moments rotate towards the a-axis.
Publication date
Linkhttp://www.iop.org/EJ/abstract/0953-8984/19/43/436205/
AffiliationNational Research Council Canada; NRC Industrial Research Assistance Program; NRC Canadian Neutron Beam Centre
Peer reviewedNo
Identifier10451456
NPARC number12327943
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Record identifier980721ea-c3e1-49be-acf3-ba2c9ebad79d
Record created2009-09-10
Record modified2016-05-09
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