Tailored dielectric, magnetic and magnetoelectric properties of Cu0.6Zn0.4Fe2O4-BaTiO3 composites

The composites samples (1-x)(Cu0.6Zn0.4Fe2O4) CZF + x(BaTiOO3) BT, where (x = 0%, 10%, 20%, 30%, 40%, 50% 60%, 70%, 80%, 90% and 100%), have been prepared by ball milling. The x-ray diffraction showed that two phases have retained their identity in the composites and no undesired reaction has occurred between two phases. The tetragonality factor (TF) of ferrimagnetic phase increases with BT content up to x = 30% and then decreases at x = 40% but, for higher BT conten;; TF is nearly constant. The A resistivity enhances with BT content, showing semiconductor behavior. Furthermore, it is demonstrated that CZF enhances ferroelectricity of BT. In addition, the initial permeability of the samples decreases with BT content and increases with higher selected frequency. It is demonstrated that the magnetoelectric voltage coefficient Delta AE Delta AH) depends strongly on BT content. The maximum Delta AE Delta AH of some CZF-BT composites is higher than reported values of other ferrite-BT composites indicating vital role of CZF in developing magnetoelectric effect for ferrite-BT composites.