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An axial flux permanent magnet synchronous machine (AFPMSM) with double external rotors and coreless internal stator can operate at higher efficiency without the stator core losses and cogging torque.
The intriguing magnetic states — skyrmion and skyrmion lattice — have been observed and created in helical magnetics, such as MnSi, Fe1−xCoxSi, the helical FeGe and monolayer Fe film [1-3]. The skyrmions in helical magnets are always associated with the chiral magnetic interaction, namely Dzyaloshinskii-Moriya interaction (DMI). However, several novel works present new approaches to create the skyrmion...
Fe-based soft magnetic composites (SMCs) are technologically important due to their unique properties such as satisfactory magnetic performance and low loss for high frequency applications1. Insulation coating of the ferromagnetic powders is critical in the preparation of SMCs. While traditional phosphate treatment allows surface passivation of the Fe powders2, the obtained phosphate coating layers...
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