The introduction of isotropic ferrite and anisotropic ferrite

Hard ferrite magnets belong to sintered permanent magnets, which are currently one of the most widely used magnets, and the cost is also very low. Ferrite magnets are mainly made of SrO and Fe2O3 as the main raw materials, and are made by ceramic sintering process. The difference from other permanent magnets is that ferrite does not belong to rare earth permanent magnets.

In addition, there are two types of ferrite magnets, isotropic and anisotropic. The Isotropic ferrite magnet means that there is no coil for magnetization during molding and pressing, and the magnetization direction is determined. That is to say, after the magnets finished, they can be magnetized in all directions. The anisotropic ferrite magnet means the magnetization is determined in the coil during molding and pressing, that is to say, no matter how to magnetize them, the magnetization direction is no change.