Rare‐Earth‐Free Permanent Magnets for Electrical Vehicle Motors and Wind Turbine Generators: Hexagonal Symmetry Based Materials Systems Mn‐Bi and M‐type Hexaferrite

The research we conducted focuses on the rare-earth (RE)-free permanent magnet by modeling, simulating, and synthesizing exchange coupled two-phase (hard/soft) RE-free core-shell nano-structured magnet. The RE-free magnets are made of magnetically hard core materials (high anisotropy materials including Mn-Bi-X and M-type hexaferrite) coated by soft shell materials (high magnetization materials including Fe-Co or Co).
Therefore, our research helps understand the exchange coupling conditions of the core/shell magnets, interface exchange behavior between core and shell materials, formation mechanism of core/shell structures, stability conditions of core and shell materials, etc.

Author(s) Hong, Yang-Ki [University of Alabama] [University of Alabama]; Haskew, Timothy [University of Alabama] [University of Alabama]; Myryasov, Oleg [University of Alabama] [University of Alabama]; Jin, Sungho [University of California San Diego] [University of California San Diego]; Berkowitz, Ami [University of California San Diego] [University of California San Diego]