The structural, electrical and magnetic properties have been investigated for Ca and Sr substituted Ba1-x(Ca0.5Sr0.5)xFe0.5Ti0.5O3 (where x = 0.0, 0.1 0.2, 0.3, 0.4) which have been synthesized by a solid state reaction technique and sintered at 1200 oC for 3 hours. In this study BaTiO3 is modified with Fe in lattice B-site. The X-ray diffraction pattern of the prepared samples have indicated single phase cubic perovskite structure. Lattice constant of the samples have decreased with the increasing Ca and Sr contents which follows Vegard's law. The microstructure of the samples showed that the grain growth rate was greately changed by doping contents. Doping contents have influenced the dielectric constant within the frequency range of 1 kHz to 120 MHz. It is observed that AC resistivities of the prepared samples have been decreased with increasing frequency while DC resistivities have been decreased with increasing temperature confirming the semiconductor behavior of the prepared ceramics. The magnetic hysteresis loops had also been observed by VSM at room temperarure. The initial permeability followed decreasing trend with increasing doping contents.

Keywords: XRD, Lattice parameter, Dielectric constant, Resistivity, Permeability, Hysteresis