Research Highlights

Ce-based gap magnets match high-temperature performance of neo

CMI research at Ames Laboratory Achievement showed that at certain temperatures a cerium-based magnet matches the energy product of and exceeds the coercivity of neodymium permanent magnets

Additive manufacturing NdFeB bonded magnets reach the gap magnet milestone

High-performance critical-element-free permanent magnets

CMI research at Ames Laboratory demonstrated that mechanochemical preprocessing is beneficial for nitrogen insertion/topotactic extraction

Lower-cost commercial grade Ce enhances performance and reduces cost in gap magnets

CMI research with lower-cost commercial grade cerium enhances performance and reduces cost in gap magnets. Also, the less costly “dirty” cerium samples showed as much as a 5% increase of both coercivity and magnetization, resulting in better energy product. 

CMI research on cover of journal: Sustainable urban mining of critical elements from magnet and electronic wastes

Journal publication on the acid-free leaching process for recycling rare-earth elements and cobalt from waste magnet and e-waste materials is published and highlighted as a supplementary cover in ACS high impact journal

Optimized shredding conditions enables improvement in leaching time for REEs in end-of-life hard disk drives (HDDs)

A HDD shredder designed to result in optimally shredded feedstock for acid-free dissolution and also minimize the amount of magnets attached to the cutters during shredding has been commissioned. Consequently, only ~60% of the original leaching time is required and a dissolution efficiency of ≥72% wt.% was obtained for HDDs.

Discovery of the large coercivity CeCo5 – CeZn5 system

CMI researchers discover the large coercivity CeCo5 – CeZn5 system

Development of a new rare earth-free permanent magnet based on Sb-doped Fe3Sn

CMI research on development of a new rare earth-free permanent magnet based on Sb-doped Fe3Sn

Optimizing acid-free dissolution process for e-wastes

CMI research at Ames Laboratory created an acid-free dissolution process for e-wastes, which is being optimized

Predicting mechanical performance of Sm-Co magnets

CMI research predicts mechanical performance of Sm-Co magnets