A mechanically strong and ductile soft magnet with extremely low coercivity

Abstract Soft magnetic materials (SMMs) serve in electrical applications and sustainable energy supply, allowing magnetic flux variation in response to changes in applied magnetic field, at low energy loss 1 . The electrification of transport, households and manufacturing leads to an increase in energy consumption owing to hysteresis losses 2 . Therefore, minimizing coercivity, which scales these losses, is crucial 3 . Yet meeting this target alone is not enough: SMMs in electrical engines must withstand severe mechanical loads; that is, the alloys need high strength and ductility 4 . This is a fundamental design challenge, as most methods that enhance strength introduce stress fields that can pin magnetic…

• DF
  Deutsche Forschungsgemeinschaft

  Awards: 405553726, TRR 270
• NN
  National Natural Science Foundation of China

  Award: 51971248
• M
  Max-Planck-Gesellschaft
• CS
  China Scholarship Council

  Award: 201906370028
• MF
  Max-Planck-Institut für Eisenforschung