Reduced cobalt formulation of CMI “gap magnet” material CeCo5

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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

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

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.