J. Phys. IV France 07 (1997) C1-201-C1-202
On the Magnetization Mechanisms in Polycrystalline HexaferritesI. Nedkov
Institute of Electronics, Bulgarian Academy of Sciences, 72 Tzarigradsko Chaussee blvd, Sofia 1784, Bulgaria
An attempt was made to adapt the domain-wall size model to the explanation of magnetization mechanisms in real polycrystalline hard ferrites (SrFe12O19). Some new data concerning the total anisotropy specifically for polycrystals were discussed and its value deduced from natural spin resonance measurements. It was observed that samples with different Heff grain size and shape, can present different hysteresis loops. To explain these differences, we applied the theoretical expressions for the magnetization curve and the hysteresis loop developed earlier.
© EDP Sciences 1997