Magnetic field induced phase transition in multiferroic BiFe1-xTixO3 ceramics prepared by rapid liquid phase sintering

Single phase BiFe1-xTixO3 (BFTO) ceramics with varying x up to 0.35 were prepared by a rapid liquid phase sintering method to study the influence of Ti doping on their crystal structure, morphology, and magnetic behavior. Rhombohedral to orthorhombic phase was observed above x >= 0.33. The BFTO ceramics were highly resistive and with uniform morphology. Magnetic measurements revealed an increase in magnetization with the increase in Ti content and was maximum for x=0.2 ceramic. Surprisingly, a magnetic field induced phase transition from weak ferromagnetic to diamagnetic above 50 kOe was observed for x=0.30 and 0.315 ceramics.