Overcoming Refractory REFe 2 Phase Bottleneck in High‐Ce Nd–Ce–Fe–B Magnets via Praseodymium‐Induced Phase Transformation: Enabling Liquid‐Phase Grain Boundary Diffusion of Dysprosium

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Observational analysis improved coercivity in high-Ce Nd-Ce-Fe-B magnets, suggesting Praseodymium could enhance Dysprosium diffusion.

Coercivity improved significantly, reaching up to 7.0 kOe using 0.39 wt.% Dysprosium.
Robust Dy diffusion pathways were established through Praseodymium-induced phase transformation.
Analysis revealed improved magnetic properties linked to effective grain boundary diffusion in REFe2 phases.
This approach may enable scalable production of high-performance Nd-Ce-Fe-B magnets with stable characteristics.

Feng et al. (2025) studied this question.

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