Investigation of A- and B-site Fe substituted BaTiO3 ceramics

Abstract

In this work, we report the synthesis and investigations of Ba1−xFexTiO3 (BFeT) and BaTi1−x FexO3 (BTFe) ceramics by solid state reaction method. BFeT show relaxor behaviour in the studied frequency range i.e., 10 kHz to 100 kHz with high dielectric constant in a wide temperature range of 75 °C. BTFe shows frequency dispersion at 10 kHz and almost flat dielectric response at 100 kHz and lower dielectric constant value compared to BFeT. Polarization–electric field loops of both BFeT and BTFe shows suppressed ferroelectric behaviour as compared to pristine BaTiO3(BT). Magnetization–magnetic field loops show ferromagnetic behaviour in both BFeT and BTFe at room temperature.