Explanation

Also known as permanent magnetic ferrite. A kind of ferrite that can show strong magnetism for a long time after removing the magnetic field. The crystal structure is magnetite lead stone type, which is made according to the general electronic ceramics process. It does not need precious metals elements such as cobalt and nickel. It has the characteristics of sufficient material source, simple process, low cost, and convenient for large-scale industrial production. In terms of performance, it has the advantages of high coercivity, high resistivity and light weight. The disadvantage is that the temperature coefficient is relatively high. hard magnetic ferrite is used in loudspeakers, magnetic separators, DC motors, traveling wave tubes, microwave devices, etc.

Classification