Explanation
It is the old name of ferrite, a metal oxide with ferrimagnetism. In terms of electrical properties, its resistivity is much larger than that of single metal or alloy magnetic materials, and it also has higher dielectric properties. The magnetic properties of ferrite also show that it has high permeability at high frequencies. Therefore, ferrite has become a widely used non-metallic magnetic materials in the field of high-frequency weak current. Since the magnetic energy stored in the unit volume of ferrite is low, and the saturation magnetic induction intensity (Bs) is also low (usually only 1/3~1/5 of pure iron), its application in low-frequency strong electricity and high-power fields requiring high magnetic energy density is limited. ferrite was formerly known as "iron oxide oxide" and "magnetic porcelain". A magnetic materials composed of iron oxide and other metal (such as nickel, zinc, manganese, yttrium, barium, strontium, etc.) oxides. Its conductivity is semiconductive, and its resistivity is far greater than that of pure metal magnetic materials. Therefore, the eddy current generated in high-frequency magnetic field is small. Suitable for high frequency magnetic materials. Its magnetic conductivity belongs to the ferromagnetic type, and its saturation magnetization is lower than that of pure metal magnetic materials, so it is not suitable for magnetic devices with high power and low frequency. It is widely used in electronic equipment as soft magnetic, hard magnetic, moment magnetic, spin magnetic, piezomagnetic and other materials.
Classification
No classification at present.