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

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作者：
Tetsuro Ueno
Kotaro Saito
Masao Yano
Masaaki Ito
Tetsuya Shoji
Noritsugu Sakuma
Akira Kato
Akira Manabe
Ai Hashimoto
Elliot P. Gilbert
Uwe Keiderling
Kanta Ono
机构：
[1] National Institute for Materials Science,
[2] High Energy Accelerator Research Organization,undefined
[3] Institute of Materials Structure Science,undefined
[4] Elements Strategy Initiative Center for Magnetic Materials,undefined
[5] Toyota Motor Corporation,undefined
[6] Australian Nuclear Science and Technology Organisation,undefined
[7] Bragg Institute,undefined
[8] Helmholtz-Zentrum Berlin für Materialien und Energie,undefined
[9] Present address: Technology Research Association of Magnetic Materials for High-Efficiency Motors,undefined
[10] Higashifuji Branch,undefined
[11] Susono,undefined
[12] 410-1193,undefined
[13] Japan.,undefined
来源：
Scientific Reports | / 6卷
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摘要：
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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