Multiple magnetic scattering in small-angle neutron scattering of Nd–Fe–B nanocrystalline magnet

We have investigated the influence of multiple scattering on the magnetic small-angle neutron scattering (SANS) from a Nd–Fe–B nanocrystalline magnet. We performed sample-thickness- and neutron-wavelength-dependent SANS measurements, and observed the scattering vector dependence of the multiple magn...

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Detalles Bibliográficos
Autores principales: Ueno, Tetsuro, Saito, Kotaro, Yano, Masao, Ito, Masaaki, Shoji, Tetsuya, Sakuma, Noritsugu, Kato, Akira, Manabe, Akira, Hashimoto, Ai, Gilbert, Elliot P., Keiderling, Uwe, Ono, Kanta
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Nature Publishing Group 2016
Materias:
Article
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4913308/
https://www.ncbi.nlm.nih.gov/pubmed/27321149
http://dx.doi.org/10.1038/srep28167
Descripción
Sumario:We have investigated the influence of multiple scattering on the magnetic small-angle neutron scattering (SANS) from a Nd–Fe–B nanocrystalline magnet. We performed sample-thickness- and neutron-wavelength-dependent SANS measurements, and observed the scattering vector dependence of the multiple magnetic scattering. It is revealed that significant multiple scattering exists in the magnetic scattering rather than the nuclear scattering of Nd–Fe–B nanocrystalline magnet. It is considered that the mean free path of the neutrons for magnetic scattering is rather short in Nd–Fe–B magnets. We analysed the SANS data by the phenomenological magnetic correlation model considering the magnetic microstructures and obtained the microstructural parameters.

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