Reference : Magnetic neutron scattering by magnetic vortices in thin submicron-sized soft ferroma...
Scientific journals : Article
Physical, chemical, mathematical & earth Sciences : Physics
Physics and Materials Science
Magnetic neutron scattering by magnetic vortices in thin submicron-sized soft ferromagnetic cylinders
Metlov, K.L. []
Michels, Andreas mailto [University of Luxembourg > Faculty of Science, Technology and Communication (FSTC) > Physics and Materials Science Research Unit >]
Scientific Reports
Nature Publishing Group
Yes (verified by ORBilu)
United Kingdom
[en] neutron scattering ; micromagnetics ; vortex
[en] Using analytical expressions for the magnetization textures of thin submicron-sized magnetic cylinders
in vortex state, we derive closed-form algebraic expressions for the ensuing small-angle neutron
scattering (SANS) cross sections. Specifically, for the perpendicular and parallel scattering geometries,
we have computed the cross sections for the case of small vortex-center displacements without
formation of magnetic charges on the side faces of the cylinder. The results represent a significant
qualitative and quantitative step forward in SANS-data analysis on isolated magnetic nanoparticle
systems, which are commonly assumed to be homogeneously or stepwise-homogeneously
magnetized. We suggest a way to extract the fine details of the magnetic vortex structure during the
magnetization process from the SANS measurements in order to help resolving the long-standing
question of the magnetic vortex displacement mode.
Researchers ; Professionals

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