Reference : Neutron study of magnetic correlations in rare-earth-free Mn-Bi magnets
Scientific journals : Article
Physical, chemical, mathematical & earth Sciences : Physics
Physics and Materials Science
http://hdl.handle.net/10993/46626
Neutron study of magnetic correlations in rare-earth-free Mn-Bi magnets
English
Malyeyev, Artem mailto [University of Luxembourg > Faculty of Science, Technology and Medicine (FSTM) > Department of Physics and Materials Science (DPHYMS)]
Titov, Ivan [> >]
Bender, Philipp [> >]
Bersweiler, Mathias mailto [University of Luxembourg > Faculty of Science, Technology and Medicine (FSTM) > Department of Physics and Materials Science (DPHYMS)]
Pipich, Vitaliy [> >]
Mühlbauer, Sebastian [> >]
Ener, Semih [> >]
Gutfleisch, Oliver [> >]
Michels, Andreas mailto [University of Luxembourg > Faculty of Science, Technology and Medicine (FSTM) > Department of Physics and Materials Science (DPHYMS)]
1-Mar-2021
Physical Review Materials
American Physical Society (APS)
5
034407
Yes (verified by ORBilu)
2475-9953
New York
NY
[en] Condensed Matter - Materials Science
[en] We report the results of an unpolarized small-angle neutron scattering (SANS) study on Mn-Bi-based rare-earth-free permanent magnets. The magnetic SANS cross section is dominated by long-wavelength transversal magnetization fluctuations and has been analyzed in terms of the Guinier-Porod model and the distance distribution function. This provides the radius of gyration which, in the remanent state, ranges between about $220-240 \, \mathrm{nm}$ for the three different alloy compositions investigated. Moreover, computation of the distance distribution function in conjunction with results for the so-called $s$-parameter obtained from the Guinier-Porod model indicate that the magnetic scattering of a Mn$_{45}$Bi$_{55}$ sample has its origin in slightly shape-anisotropic structures.
http://hdl.handle.net/10993/46626
10.1103/PhysRevMaterials.5.034407
https://ui.adsabs.harvard.edu/abs/2020arXiv201111446M

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