J. Phys. IV France 07 (1997) C1-207-C1-208
Modified Mode1 of Initial Magnetic Permeability of Polycrystalline FerritesG. Rankis, V. Yurshevich and J. Jankovskis
Riga Technical University, 12 Azenes str., LV-1048 Riga, Latvia
A modified model of the initial magnetic permeability (IMP) is offered for a wide class of polycrystalline ferrites (PF) : Ni and NiZn ferrites, YIG. Within the scope of this model, IMP and other structure-dependent properties of normally sintered ferrites are explained by two pinning mechanisms of the displacing flat domain walls (DW). The main mechanism is due to the interaction between DW and the inhomogeneous microstresses in the immediate vicinity of the grain boundaries (GB). The second mecchanism occurs due to the closure domains.
© EDP Sciences 1997