New hard magnets free of rare earth metals

© Photo Fraunhofer IWM

Magnetische Spinpolarisation an einer Korngrenze in einem ferromagnetischen Metall auf atomarer Skala.

Hard magnets play a crucial role in converting electromechanical energy in electromobility applications and wind turbines. The increased demand for materials containing rare earth metals has, however, reached a critical level. In the search for material substitutes that are free of rare earth metals, ab initio density functional theory is used to calculate magnetic parameters for real and hypothetical crystal phases. “High throughput screening“ material theory and “Data Mining“ information theory are used in simulations to predict the most promising candidates from thousands of magnetic phases.