polycrystalline Fe/Si multilayer; polarized neutron scattering; two-dimensional random anisotropy model
Abstract :
[en] 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.
Disciplines :
Physics
Author, co-author :
Maruyama, Ryuji
Bigault, Thierry
Saerbeck, Thomas
Honecker, Dirk ; University of Luxembourg > Faculty of Science, Technology and Communication (FSTC) > Physics and Materials Science Research Unit
Soyama, Kazuhiko
Courtois, Pierre
External co-authors :
yes
Language :
English
Title :
Coherent Magnetization Rotation of a Layered System Observed by Polarized Neutron Scattering under Grazing Incidence Geometry