Article (Scientific journals)
Domain formation and long-range spin disorder in Vitroperm
Michels, Andreas; Viswanath, R. N.; Weissmüller, J.
2003In Europhysics Letters, 64, p. 43-49
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Abstract :
[en] We present a study of the magnetic-field dependence of the small-angle neutron scattering of the nanocrystalline soft magnet Vitroperm (Fe73Si16B7Nb3Cu1), which was treated so as to exhibit a macroscopic magnetic anisotropy. We show how the field dependences of i) the radial average of the scattering cross-section dΣ/dΩ and ii) the variation of dΣ/dΩ as a function of the orientation of the scattering vector can be analysed to supply separately information on the orientation of the net magnetisation of the domains and on the internal spin disorder within the domains. As the applied magnetic field is decreased starting from saturation, we find that two processes occur independently: the formation of a domain structure with the net magnetisation of the domains aligned along the macroscopic easy axis and the increase in magnitude of static, nanometer-scale fluctuations of the spin orientation.
Disciplines :
Physics
Identifiers :
UNILU:UL-ARTICLE-2010-517
Author, co-author :
Michels, Andreas  ;  University of Luxembourg > Faculty of Science, Technology and Communication (FSTC) > Physics and Materials Science Research Unit
Viswanath, R. N.
Weissmüller, J.
Language :
English
Title :
Domain formation and long-range spin disorder in Vitroperm
Publication date :
2003
Journal title :
Europhysics Letters
ISSN :
1286-4854
Publisher :
EDP Sciences, Les Ulis, France
Volume :
64
Pages :
43-49
Peer reviewed :
Peer Reviewed verified by ORBi
Available on ORBilu :
since 24 April 2013

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