Journal Article

FZJ-2015-07230

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Magnetic microstructure of a textured Nd-Fe-B sintered magnet characterized by small-angle neutron scattering

Périgo, E. A. (Corresponding author) ; Mettus, D. ; Gilbert, E. P. ; Hautle, P. ; Niketic, N. ; van den Brandt, B. ; Kohlbrecher, J. ; McGuiness, P. ; Fu, Z.FZJ* ; Michels, A.

2016
Elsevier Lausanne

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Please use a persistent id in citations: http://hdl.handle.net/2128/9717  doi:10.1016/j.jallcom.2015.11.167

Abstract: We report the results of a small-angle neutron scattering (SANS) study on the magnetic microstructure of a textured Nd–Fe–B-based sintered permanent magnet. By combining unpolarized and polarized SANS (SANSPOL), we demonstrate that a number of important conclusions regarding the microscopic spin structure can be made. Specifically, the applied-field dependence of the unpolarized neutron data is in agreement with the existence of long-range spin-misalignment fluctuations, i.e., deviations of the magnetization from the mean direction on a real-space length-scale up to the micron range. In addition, measurements with polarized neutrons provide evidence for the presence of coupled nanometer-scale fluctuations in the nuclear and longitudinal magnetic scattering-length density.

Keyword(s): Magnetic Materials (1st) ; Materials Science (2nd)

Note: Art. No S0925838815317230

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Contributing Institute(s):

1. JCNS-FRM-II (JCNS (München) ; Jülich Centre for Neutron Science JCNS (München) ; JCNS-FRM-II)
2. Streumethoden (JCNS-2)

Research Program(s):

1. 6G4 - Jülich Centre for Neutron Research (JCNS) (POF3-623) (POF3-623)
2. 6G15 - FRM II / MLZ (POF3-6G15) (POF3-6G15)

Experiment(s):

1. KWS-3: Very small angle scattering diffractometer with focusing mirror (NL3auS)

Appears in the scientific report 2016

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Database coverage:
; ; Current Contents - Physical, Chemical and Earth Sciences ; IF < 5 ; JCR ; SCOPUS ; Science Citation Index ; Science Citation Index Expanded ; Thomson Reuters Master Journal List ; Web of Science Core Collection

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