%0 Journal Article
%A Périgo, Élio A
%A Titov, Ivan
%A Weber, Raoul
%A Mettus, Denis
%A Peral, Inma
%A Vallcorba, Oriol
%A Honecker, Dirk
%A Feoktystov, Artem
%A Michels, Andreas
%T Effect of annealing conditions on the microstructure and magnetic properties of sintered Nd-Fe-B magnets as seen by magnetic small-angle neutron scatteringml
%J Materials Research Express
%V 5
%N 3
%@ 2053-1591
%C Bristol
%I IOP Publ.
%M FZJ-2018-06074
%P 036110 -
%D 2018
%X We have investigated the effect of the annealing conditions (heating rate and temperature) on themagnetic microstructure of sintered Nd-Fe-B magnets by means of magnetometry, scanning electronmicroscopy, high-energy synchrotron x-ray diffraction, and small-angle neutron scattering (SANS).While the temperature treatment has a strong effect on the coercivity (reduction by about 50% onannealing), the associated changes in the microstructure do surprisingly not show up (or at best onlyvery weakly) in the neutron-scattering signal, which probes a mesoscopic real-space length scaleranging between about 1–300 nm. On the other hand, the x-ray data reveal microstructural changes inthe Nd-rich phases, presumably due to modifications in grain-boundary regions. Moreover, weobserve an unusual diamond-shaped angular anisotropy in the SANS cross section, which stronglypoints towards the existence of texture in the nuclear microstructure.
%F PUB:(DE-HGF)16
%9 Journal Article
%U <Go to ISI:>//WOS:000428807900001
%R 10.1088/2053-1591/aab7aa
%U https://juser.fz-juelich.de/record/856723