The Influences of Nb2O5, MnO2, CuO and B2O3 Addition on the Magnetic Properties of BaFe12O19 Magnets

In the present study, we have investigated the influence of different types of doping elements on magnetic properties of M-type BaFe12O19 samples. It was observed that Nb2O5 addition increases the coercive field, the remanence magnetization (M (r)), and saturation magnetization (M (s)) values by about 27 %, 47 %, and 53 %, respectively. In the same manner, MnO2 also improves the magnetic parameters significantly. The M (r) and M (s) values show increments up to 40 % in magnitude. On the other hand, the best magnetic properties were achieved by the addition of CuO to the B2O3 doped BaFe12O19. These materials have M (r) and M (s) values up to similar to 34 emu/g and similar to 62 emu/g, respectively.