Document Detail


Transverse magnetism in uniaxial antiferromagnet UNiGa.
MedLine Citation:
PMID:  21411888     Owner:  NLM     Status:  In-Data-Review    
Abstract/OtherAbstract:
UNiGa crystallizes in the hexagonal ZrNiAl structure and orders antiferromagnetically below T(N) = 39.3 K with the U moments oriented along the c-axis (easy magnetization axis). There are four different antiferromagnetic phases in zero magnetic field and two field induced magnetic phases in UNiGa. For all of them, a strong uniaxial anisotropy is encountered. All the magnetic phases are described by propagation vectors of (0 0 q(i))-type, where q(i) describes the stacking of the ferromagnetic basal planes along the hexagonal c-axis. However, recently (0 0 L)-type Bragg reflections associated with the magnetic ordering have been observed by neutron diffraction. Based on unpolarized and polarized neutron diffraction and non-resonant and resonant synchrotron x-ray scattering experiments combined with polarization analysis we conclude that small amounts of magnetic moments oriented perpendicular to the c-axis exist in UNiGa. Whether these moments reside on Ni atoms outside the U-Ni planes or at interstitial regions could not be determined.
Authors:
K Prokeš; R Feyerherm; E Dudzik; V Sechovský; M Mihalik
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Publication Detail:
Type:  Journal Article     Date:  2011-02-01
Journal Detail:
Title:  Journal of physics. Condensed matter : an Institute of Physics journal     Volume:  23     ISSN:  0953-8984     ISO Abbreviation:  J Phys Condens Matter     Publication Date:  2011 Feb 
Date Detail:
Created Date:  2011-03-17     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  101165248     Medline TA:  J Phys Condens Matter     Country:  England    
Other Details:
Languages:  eng     Pagination:  076001     Citation Subset:  IM    
Affiliation:
Helmholtz-Zentrum Berlin für Materialien und Energie, M-I1, Hahn-Meitner-Platz 1, 14109 Berlin, Germany.
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