PI: Yang-Ki Hong and Gary Mankey, University of Alabama.
The applications of the permanent magnets (PM) have been expanding towards sustainable energy devices, including electric vehicle (EV) motors and windmill generators. However, the limited supplies of rare-earth (RE) minerals and low operation temperature of Nd-Fe-B are of great concern. Recently, RE-free PM has received a great attention. RE-free τ-MnAl, LTP-MnBi, and Alnico show 9.2, 7.8, and 13 of maximum energy product (BH)max, respectively. However, the aforementioned RE PMs either suffer from low (BH)max or phase stability. We propose to develop new non-RE PMs with higher (BH)max than that of currently available non-RE PM.