Dresden 2017 – scientific programme

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MA: Fachverband Magnetismus

MA 56: Bulk Materials: Soft and hard permanent magnets

MA 56.9: Talk

Thursday, March 23, 2017, 17:15–17:30, HSZ 403

High-throughput density functional screening for permanent magnet materials — •Ingo Opahle — TU Darmstadt, Germany

High-throughput density functional calculations are used to search for candidates for new rare earth free permanent magnet materials. The key quantity here is the magneto-crystalline anisotropy energy (MAE), which sets an upper bound to the coercivity. The concept is explained at hand of the well-known Co-Pt system. It is shown that a considerably higher MAE than in the known L10 structure is possible, provided meta stable crystal structures can be stabilized, e.g by addition of a suitable element. Applications to further systems will be shown as well.