CMI researchers at Ames Laboratory conducted the research for this CMI highlight
LaCo2Fe3N2 and LaCo2Mn3N2 with reduced Co are found from first principles to exhibit significant hard magnetic properties.
Significance and impact
- Intermediate-performing, critical element-lean permanent magnet materials offer promise of low-cost “gap-magnets”
- Substitution of Fe and Mn for Co reduces materials cost by as much as 55%, relative to LaCo5
Details and next steps
- Interstitial nitrogen inclusion stabilizes compositions and enhances intrinsic permanent magnet properties
- Future studies will determine whether nitrogen addition induces structural transformation from 1-5 into 1-12 or 2-17 structures