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The enhanced coercivity of Dy-substituted Nd–Fe–B-based sintered magnets is generally believed to be due to the enhanced magnetocrystalline anisotropy of the compound (Nd,Dy) 2 Fe 14 B. In this work we have analyzed the distribution of Dy in sintered (Nd,Dy)–Fe–B magnets using the three-dimensional atom probe (3DAP) technique complemented with high-resolution scanning and transmission...
We investigated the effects of Al/Cu co-doping on the magnetic and microstructural properties of a Nd-Fe-B sintered magnet. In particular, the structural and compositional changes of Cu-dissolved Nd-rich (Cu-rich) triple junction phase (TJP) and grain boundary phase (GBP) experienced upon Al/Cu co-doping were intensively analyzed. Al was selectively dissolved into the Culow-rich phases (B phase, 3–15 at...
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