Explanation

It is also called Ba ferrite. The utility model relates to a hard magnetic (permanent magnetic) ceramics, which belongs to a magnetic lead stone structure. It is made by general electronic ceramics process. The sintering temperature of barium ferrite is lower than that of other ferrite, ranging from 1100-1200T; In general, the residual magnetic induction of isotropic Ba ferrite is small, and BHc and cannot be large. For example, in the process of sintering, each grain is easy to be magnetize in the same direction to make anisotropic Ba ferrite. Magnetic field forming is also a method for preparing anisotropic barium iron. Compared with advanced alloy magnet steel such as rare earth cobalt (SmC%>), Ba ferrite has lower Br, BHe and. However, since Ba ferrite does not need any rare metals, it also has quite high coercivity. Therefore, it is suitable for use in occasions with strong demagnetizing fields. Because it is a semiconducting materials with high resistivity, it can also be used in high-frequency magnetic fields.

Classification