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On the angular anisotropy of the randomly averaged magnetic neutron scattering cross section of nanoparticles

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 b...

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Detalles Bibliográficos
Autores principales: Adams, Michael P., Pratami Sinaga, Evelyn, Michels, Andreas
Formato: Online Artículo Texto
Lenguaje:English
Publicado: International Union of Crystallography 2023
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10161771/
https://www.ncbi.nlm.nih.gov/pubmed/36913314
http://dx.doi.org/10.1107/S205225252300180X
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author Adams, Michael P.
Pratami Sinaga, Evelyn
Michels, Andreas
author_facet Adams, Michael P.
Pratami Sinaga, Evelyn
Michels, Andreas
author_sort Adams, Michael P.
collection PubMed
description 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.
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spelling pubmed-101617712023-05-06 On the angular anisotropy of the randomly averaged magnetic neutron scattering cross section of nanoparticles Adams, Michael P. Pratami Sinaga, Evelyn Michels, Andreas IUCrJ Research Papers 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. International Union of Crystallography 2023-03-14 /pmc/articles/PMC10161771/ /pubmed/36913314 http://dx.doi.org/10.1107/S205225252300180X Text en © Michael P. Adams et al. 2023 https://creativecommons.org/licenses/by/4.0/This is an open-access article distributed under the terms of the Creative Commons Attribution (CC-BY) Licence, which permits unrestricted use, distribution, and reproduction in any medium, provided the original authors and source are cited.
spellingShingle Research Papers
Adams, Michael P.
Pratami Sinaga, Evelyn
Michels, Andreas
On the angular anisotropy of the randomly averaged magnetic neutron scattering cross section of nanoparticles
title On the angular anisotropy of the randomly averaged magnetic neutron scattering cross section of nanoparticles
title_full On the angular anisotropy of the randomly averaged magnetic neutron scattering cross section of nanoparticles
title_fullStr On the angular anisotropy of the randomly averaged magnetic neutron scattering cross section of nanoparticles
title_full_unstemmed On the angular anisotropy of the randomly averaged magnetic neutron scattering cross section of nanoparticles
title_short On the angular anisotropy of the randomly averaged magnetic neutron scattering cross section of nanoparticles
title_sort on the angular anisotropy of the randomly averaged magnetic neutron scattering cross section of nanoparticles
topic Research Papers
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10161771/
https://www.ncbi.nlm.nih.gov/pubmed/36913314
http://dx.doi.org/10.1107/S205225252300180X
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