IMF2017

It is a tough issue to unlock the underlying polarization and magnetization simultaneously in non-quenched BiFeO3 ceramics due to high conductivity, intensive domain wall clamping and long range spiral spin arrangement. Here, in this paper, 0.75BiFe_0.98Ga_0.02O₃-0.25(Ba_0.85Ca_0.15)(Zr_0.10Ti_0.90)O₃ multiferroic ceramics was fabricated by conventional solid state reaction with non-quenched method. The crystalline structure analysis revealed that the ceramics was a single perovskite structure with coexistence of rhombohedral and pseudocubic phases. Complete domain switching was observed in the ceramics with high remnant polarization (44 μC/cm²), which was superior to other reported BiFeO₃ based lead-free ceramics. Moreover, enhanced ferromagnetism with remnant magnetization (0.20emu/g) was also obtained. We believe that this excellent ferroelectric and ferromagnetic performance demonstrates this non-quenched BiFeO3 based ceramics as quite promising candidate for practical applications.