Reduced cobalt formulation of CMI “gap magnet” material CeCo5

bar graph shows magnetic performance parameters for the indicated materials. — Magnetic performance parameters for the indicated materials.

CMI researchers at Ames Laboratory conducted the activity for this highlight

Innovation
Discovery of critical element-lean LaCo₂Fe₃N₂ with reduced Co content.

Achievement
Predicted a new magnet material (LaCo₂Fe₃N₂) with hardness, magnetic anisotropy, and potential energy products close to CMI “gap magnet” material CeCo₅.

Significance and Impact
Identified crystallographic and interstitial site substitutions to reduce the content of Co by as much as 60% while maintaining permanent magnetic performance.

Hub Target Addressed
Win industry adoption of three technologies related to materials substitution for rare-earth magnet materials.