Abstract
To adjust the dielectric constant and the initial permeability of NiCuZn–ferrite materials for suppressing electromagnetic interference, Pb 0.95Sr 0.05(Zr 0.52Ti 0.48)O 3 (PZT) was introduced. The effects of PZT additive on the phase composition, densification, microstructures and electromagnetic properties of the ceramics with composition of xPZT+(1− x)NiCuZn–ferrite (where x=0–25 wt%) were investigated. The results show that these composites are mainly of spinel phase, exhibiting relatively high dielectric constant and initial permeability due to the mutual effects of magnetization of NiCuZn–ferrite phase and polarization of PZT phase. Meanwhile, relatively high-quality factor ( Q) and excellent frequency stability were obtained for the samples with PZT additive. These materials are expected to be used as embedded inductors or embedded capacitors.
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