Buy Soft Ferrite Soft Ferrite is a ferromagnetic oxide with Fe2O3 as the main component, which is produced by powder metallurgy method. There are Mn-Zn, Cu-Zn, Ni-Zn, etc. Among them, the output and consumption of Mn-Zn Ferrite is the largest, and the resistivity of Mn-Zn Ferrite is low, ranging from 1 ~ 10 ohm/m, which is generally used at frequencies below 100kHZ. Cu-Zn and Ni-Zn Ferrites have a resistivity of 102 ~ 104 ohm/m and a low loss in the radio frequency range of 100KHz ~ 10 MHZ. They are commonly used in radio antenna coils and radio http://www.yanhemagnet.com/per....manent-ferrite-magne