Ferrite magnet is a kind of permanent magnet mainly made of SrO or Bao and Fe2O3. It is a functional material made by ceramic process, with wide hysteresis loop, high coercivity and high remanence. Once magnetized, it can maintain constant magnetism, and the device density is 4.8g/cm3. Бусад байнгын соронзтой харьцуулахад феррит соронз нь хатуу, хэврэг, соронзон энерги багатай байдаг. However, it is not easy to demagnetize and corrode, the production process is simple and the price is low. Therefore, ferrite magnets have the highest output in the whole magnet industry and are widely used in industrial production.