Exploration of (1−x)BaTiO3 + xZnFe2O4 magneto-electric ceramic composite on charge density: Structure and its characterization

•Charge density analysis of the composite (1-x)BaTiO3 + xZnFe2O4 (x = 0.2, 0.4, 0.6, 0.8) prepared by solid state synthesis method.•For x = 0.2–0.6, the dielectric constant decreases and is maximum for x = 0.8, is correlated with the electron density studies.•The sample changes from lossy capacitance to resistive capacitance.•The electron density plays an important role in the magnetization of the composite since the saturation magnetization decreases for x = 0.4 to x = 0.6, though the ferrite content increases.•The characteristics of the prepared composite is correlated with the electron density studies.