Dielectric and Magnetic Properties of BaTiO3/NiFe2O4 Composites
A series of ferrroelectric-ferromagnetic composites were synthesized from BaTiO3 and NiFe2O4 ferrite by conventional solid-state route. XRD studies indicated that the composites comprised of only two phases, BaTiO3 phase with perovskite structure and NiFe2O4 phase with spinel structure. Frequency dependence of permittivity and permeability were also measured. Experimental results showed that the dielectric constant and initial permeability of these composites could be tunable by varying the composition of composites. Thus, these composites can be used for multilayer chips EMI filters.
Wei Pan and Jianghong Gong
J. H. Shen et al., "Dielectric and Magnetic Properties of BaTiO3/NiFe2O4 Composites", Key Engineering Materials, Vols. 336-338, pp. 377-380, 2007