Research article: Multicomponent permanent magnets for enhanced electrical device efficiency. We presented an innovative approach for improving the efficiency of permanent magnets which consequently improve the efficieny of electro-mechanical devices, such as electric motors and wind turbines. The research is based on results of simulations that predicted the benefits of using magnets containing regions with different magnetic properties. The proposed approach allows us to minimize the use of expensive and critical heavy-rare-earth elements dysprosium and terbium.
https://www.sciencedirect.com/science/article/pii/S0304885319308170