Abstract
Co-precipitation method was used to prepare spinel ferrites having composition Co0.6Zn0.4YxFe2−xO4, where x is 0.00, 0.025, 0.05, 0.075, and 0.10. The magnetic, dielectric and structural characteristics of all these prepared ferrites were determined. XRD (x-ray diffraction) results proved the cubic spinel structure of synthesized ferrites. The dielectric loss, dielectric constant and AC conductivity reduced by adding rare earth concentration. The role of grains and grain boundaries was studied by using impedance analysis. The resistance of grains and grain boundaries was measured from Cole-Cole plots. Soft nature of prepared ferrites was confirmed by magnetic characters. By increasing yttrium concentration, remanence and saturation magnetization were reduced while coercivity was increased. All these parameters suggest synthesized ferrites as the best candidate for high frequency applications.