This title appears in the Scientific Report : 2016 

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. / Michels, A.
Streumethoden; JCNS-2
JCNS-FRM-II; JCNS-FRM-II
Journal of alloys and compounds, 661 (2016) S. 110-114
Lausanne Elsevier 2016
10.1016/j.jallcom.2015.11.167
Journal Article
FRM II / MLZ
Jülich Centre for Neutron Research (JCNS)
Restricted
Restricted
OpenAccess
OpenAccess
Please use the identifier: http://hdl.handle.net/2128/9717 in citations.
Please use the identifier: http://dx.doi.org/10.1016/j.jallcom.2015.11.167 in citations.
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.