Effects of terbium sulfide addition on magnetic properties, microstructure and thermal stability of sintered Nd–Fe–B magnets |
(a) SEM image of the 3 wt.% Tb2S3-added magnet and concentration distribution mapping of (b) Tb, (c) Nd, (d) O, and (e) S elements in the Nd-rich phase and 2:14:1 matrix phase obtained from the same region as panel (a). |
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