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100 1 _ |a Périgo, Élio A
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245 _ _ |a Effect of annealing conditions on the microstructure and magnetic properties of sintered Nd-Fe-B magnets as seen by magnetic small-angle neutron scatteringml
260 _ _ |a Bristol
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520 _ _ |a 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.
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693 _ _ |a Forschungs-Neutronenquelle Heinz Maier-Leibnitz
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700 1 _ |a Titov, Ivan
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700 1 _ |a Weber, Raoul
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700 1 _ |a Mettus, Denis
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700 1 _ |a Peral, Inma
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700 1 _ |a Vallcorba, Oriol
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700 1 _ |a Honecker, Dirk
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700 1 _ |a Feoktystov, Artem
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700 1 _ |a Michels, Andreas
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773 _ _ |a 10.1088/2053-1591/aab7aa
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