Doping effect of Zr-Zn binary mixture on the structural and electrical properties of SrCo2-W type hexaferrites

SrCo2Fe16−2x(Zr-Zn)xO27 hexaferrite nanocrystallites of average crystallite sizes in the range of 38-43 nm were synthesized by the chemical co-precipitation method and their structural and electrical properties were determined. Single hexaferrite phase was established by X-ray diffraction (XRD) analysis of the synthesized samples and various parameters have been calculated using XRD data. Doping Zr-Zn binary mixture in SrCo2Fe16O27 resulted in a considerable enhancement of the room temperature resistivity (109 Ω cm), which make it suitable for applications at higher frequencies and for the minimizing eddy current losses in the transformers cores. Of all the synthesized samples, the lowest value of the reflection loss is obtained for the dopant contents of x=0.2 and x=0.8. Materials with high absorption characteristics may find their applications in the microwave and radar absorption as well as for the electromagnetic attenuations.