Microstructure and properties of Co2Z hexaferrite prepared by gel self-propagating method

The microstructure and properties of Ba3Co2Fe24O41 hexagonal ferrite sintered at relatively low temperature by the gel self-propagating method are investigated. XRD analysis and SEM pictures indicate that the formation and densification of Ba3Co2Fe24O41 hexaferrites can be achieved at relatively low temperature. Results from frequency spectra show higher initial permeability, stable cutoff frequencies and quality factor values for the sintered ferrites. The densification and microstructure are correlated to the magnetic properties. The electrical properties, such as resistivity and frequency dependence of dielectric constant, and relative mechanisms involved in generating these effects are discussed in this paper.