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Open AccessArticle

Coherent Magnetization Rotation of a Layered System Observed by Polarized Neutron Scattering under Grazing Incidence Geometry

1
J-PARC Center, Japan Atomic Energy Agency, 2-4 Shirakata, Tokai, Ibaraki 319-1195, Japan
2
Institut Laue Langevin, 71 Avenue des Martyrs, 38042 Grenoble, France
*
Author to whom correspondence should be addressed.
Current address: Physics and Materials Science Research Unit, University of Luxembourg, 162A Avenue de la Faïencerie, L-1511 Luxembourg, Luxembourg.
Crystals 2019, 9(8), 383; https://doi.org/10.3390/cryst9080383
Received: 2 July 2019 / Revised: 22 July 2019 / Accepted: 23 July 2019 / Published: 26 July 2019
(This article belongs to the Special Issue Investigation of Nanostructures with X-ray Scattering Techniques)
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Abstract

The in-plane magnetic structure of a layered system composed of polycrystalline grains smaller than the ferromagnetic exchange length was studied to elucidate the mechanism controlling the magnetic properties considerably different from the bulk using polarized neutron scattering under grazing incidence geometry. The measured result, together with quantitative analysis based on the distorted wave Born approximation, showed that the in-plane length of the area with a uniform orientation of moments ranging from 0.5–1.1 μ m was not significantly varied during the process of demagnetization followed by remagnetization. The obtained behavior of moments is in good agreement with the two-dimensional random anisotropy model where coherent magnetization rotation is dominant. View Full-Text
Keywords: polycrystalline Fe/Si multilayer; polarized off-specular neutron scattering; polarized grazing-incidence small-angle neutron scattering; two-dimensional random anisotropy model polycrystalline Fe/Si multilayer; polarized off-specular neutron scattering; polarized grazing-incidence small-angle neutron scattering; two-dimensional random anisotropy model
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Maruyama, R.; Bigault, T.; Saerbeck, T.; Honecker, D.; Soyama, K.; Courtois, P. Coherent Magnetization Rotation of a Layered System Observed by Polarized Neutron Scattering under Grazing Incidence Geometry. Crystals 2019, 9, 383.

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