Modern Magnetic Systems
High Performance Permanent Magnets
High Performance Permanent Magnets
Due to the high demand on cheap and powerful magnets necessary for future electro-mobility and high efficient generators, the search for new and better permanent magnets is one important part in this department. In addition we also want to understand microscopically how and why permanent magnets are operating. Here the magnetization loops of MnBi are shown, where a total unsual increase in the coercive field appears with increase temperature. Our goal is to increase the hard magnetic properties, as coercive field and saturation magnetization, and to understand this from a microscopic point of view using XMCD and related methods.
MnBi Hysteresis loops (from Chen et al. Scripta Materialia 107 (2015) 131)