| Abstract Scope |
The development of high-performance permanent magnets operating near their theoretical limits, while addressing elemental criticality, is a central challenge in the permanent magnet community. In this talk, we first present how using a combinatorial approach that integrates advanced processing, multi-length-scale microstructural characterization, magnetic domain observations, and digital twins, we have succeeded in development of Dy-free Nd-Fe-B permanent magnets with a high coercivity of 2.5 T, remanence of 1.32 T, and excellent thermal stability. Moreover, we will present our recent progress on development of on-demand permanent magnets with tailored properties—optimized electrical resistivity, improved thermal stability, flatter recoil curves, and reduced dependence on critical elements—while preserving excellent hard magnetic performance. Finally, we highlight the development of SmFe₁₂-based compounds as promising candidates for next-generation, rare-earth-lean, high-performance permanent magnets. |