| 简介 |
A magnetic particle (10) has a core portion (11) with a hard magnetic phase comprising ε-Fe2O3, and a shell portion (12) with a soft magnetic phase comprising Fe and covering at least part of the core portion (11). The magnetic particle (10) is prepared by reducing an upper surface of ε-Fe2O3 powder. In this manner, the magnetic particle (10) can be prepared by reducing a Fe oxide without using a rare earth element. Preparing a sintered magnet or a bond magnet using this magnetic particle (10) enables a nanocomposite magnet to be prepared that does not use rare earth elements. |
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