Abstract
A composite system BaTiO3 (x)–BaFe12O19 (1 − x) with ferroelectric BaTiO3 phase (BT) and a ferrimagnetic BaFe12O19 phase (BF), in which x varies from 0.8 to 0.6, have been prepared by solid state double sintering method. The presence of ferroelectric (BT) and ferrimagnetic phase (BF) have been confirmed from X-ray diffraction analysis, indicating the formation of composite system. Microstructure observation shows the distribution of BT and BF grains with respect to different compositions. With the variation of x in the composite system, a typical magnetic hysteresis loops have been observed at room temperature with high magnetization and coercivity values. The ferroelectric measurements have displayed hysteresis loops for x = 0.8 and 0.6 compositions. Magnetoelectric (ME) output have been recorded at room temperature for the both the compositions. The in situ magnetic field pressing at different magnetic fields followed by solid state sintering has enhanced the ME output value. Quadratic magnetoelectric signal is recorded indicating non-linearity in the system.
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