The impact of the Ce valence to high coercivity in CeCo5 based magnets

Permanent magnets (PMs) are at the heart of green energy production and conversion. The global market for magnets is dominated by rare earth (RE)-based materials. As REs are limited, strong efforts exist to replace heavy REs with more abundant ones, particularly Ce, with their unique properties due to their mixed valency. We propose a high-throughput screening of the Ce valence in Ce-based magnets to investigate the connection between Ce valence and their magnetic properties in Ce-Co-TM (TM = Co, Cu) permanent magnets. In preliminary experiments, we found a correlation between the Ce valence and the magnetic coercivity that we want to explore further.