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 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.
National Institute for Materials Science, Tsukuba, 305-0047, Japan.|High Energy Accelerator Research Organization, Institute of Materials Structure Science, Tsukuba, 305-0801, Japan.|Elements Strategy Initiative Center for Magnetic Materials, Tsukuba, 305-0047, Japan.
Tetsuro
T
Ueno
High Energy Accelerator Research Organization, Institute of Materials Structure Science, Tsukuba, 305-0801, Japan.|Elements Strategy Initiative Center for Magnetic Materials, Tsukuba, 305-0047, Japan.
Kotaro
K
Saito
Toyota Motor Corporation, Toyota, 471-8571, Japan.
Masao
M
Yano
Toyota Motor Corporation, Toyota, 471-8571, Japan.
Masaaki
M
Ito
Toyota Motor Corporation, Toyota, 471-8571, Japan.
Tetsuya
T
Shoji
Toyota Motor Corporation, Toyota, 471-8571, Japan.
Noritsugu
N
Sakuma
Toyota Motor Corporation, Toyota, 471-8571, Japan.
Akira
A
Kato
Toyota Motor Corporation, Toyota, 471-8571, Japan.
Akira
A
Manabe
High Energy Accelerator Research Organization, Institute of Materials Structure Science, Tsukuba, 305-0801, Japan.
Ai
A
Hashimoto
Australian Nuclear Science and Technology Organisation, Bragg Institute, Lucas Heights, NSW 2232, Australia.
Elliot P
EP
Gilbert
Helmholtz-Zentrum Berlin für Materialien und Energie, Berlin, 14109, Germany.
Uwe
U
Keiderling
High Energy Accelerator Research Organization, Institute of Materials Structure Science, Tsukuba, 305-0801, Japan.|Elements Strategy Initiative Center for Magnetic Materials, Tsukuba, 305-0047, Japan.
Kanta
K
Ono