Abstract
The fabrication of ferromagnetic–ferroelectric composites is of pronounced importance in science and technology. The efficiency with which magnetostrictive and piezoelectric strain gets transferred among each other decides the extent of coupling between polarization and magnetization. In this study, the solid-state reaction method was used to synthesize CFO-BT composites. X- ray diffraction patterns of CFO-BT composites revealed phase purity of constituent phases, i.e., spinel and tetragonal structures for CFO and BT, respectively. The enhancement in electrical polarization was observed in the CFO-BT composite compared with CFO. The electrical coercivity improved radically from 9 to 5 kV/cm, confirming the larger grain size and its correlation with domains switching. The magnetoelectric coupling was achieved in CFO-40%BT composite by studying the change in polarization with magnetic field which revealed a remarkable change in the maximum polarization from 3.5 to 0.5 μC/cm2 when the applied field changed from 0 to 5000 Gauss.
Published Version
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