nanoscience; magnetic scattering; computational modeling
Résumé :
[en] The magnetic small-angle neutron scattering (SANS) cross section of dilute
ensembles of uniformly magnetized and randomly oriented Stoner–Wohlfarth
particles is calculated using the Landau–Lifshitz equation. The focus of this
study is on the angular anisotropy of the magnetic SANS signal as it can be seen
on a two-dimensional position-sensitive detector. Depending on the symmetry
of the magnetic anisotropy of the particles (e.g. uniaxial, cubic), an anisotropic
magnetic SANS pattern may result, even in the remanent state or at the coercive
field. The case of inhomogeneously magnetized particles and the effects of a
particle-size distribution and interparticle correlations are also discussed.
Centre de recherche :
ULHPC - University of Luxembourg: High Performance Computing
Disciplines :
Physique
Auteur, co-auteur :
ADAMS, Michael Philipp ; University of Luxembourg > Faculty of Science, Technology and Medicine (FSTM) > Department of Physics and Materials Science (DPHYMS)
SINAGA, Evelyn Pratami ; University of Luxembourg > Faculty of Science, Technology and Medicine (FSTM) > Department of Physics and Materials Science (DPHYMS)
MICHELS, Andreas ; University of Luxembourg > Faculty of Science, Technology and Medicine (FSTM) > Department of Physics and Materials Science (DPHYMS)
Co-auteurs externes :
yes
Langue du document :
Anglais
Titre :
On the angular anisotropy of the randomly averaged magnetic neutron scattering cross section of nanoparticles
Date de publication/diffusion :
03 mai 2023
Titre du périodique :
IUCrJ
eISSN :
2052-2525
Maison d'édition :
International Union of Crystallography, Chester, Royaume-Uni
FNR15639149 - Magnetic Neutron Scattering Of Nanoparticles: Analytical Theory And Experiment Beyond The Superspin Model, 2021 (01/10/2021-30/09/2025) - Michael Philipp Adams
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