1. Ferrite magnetic materials generally refer to the corresponding oxides of iron oxide and other metal oxides. Most of them possess ferrous magnetism. Characteristics: The resistivity is much higher than that of metals, about 1-10 (12th power) ohms/centimeter, so the vortex loss and skin effect are small, making it suitable for high-frequency use. Low saturation magnetization makes it unsuitable for use in high magnetic density situations. The Curie temperature is relatively low.

2. Ferromagnetic material: Refers to a material with ferromagnetism. For example, iron nickel cobalt and its alloys, as well as alloys of certain rare earth elements. Below the Curie temperature, the material has a higher magnetization when applied with external magnetism.

3. Ferromagnetic material: Refers to a material with ferromagnetism, such as various ferrites, that exhibit high magnetization when subjected to external magnetism below the Nail temperature.