Synthesis of ternary 0.49BF-0.20PMN-0.31PT ceramic at morphotropic phase boundary for excellent die-/piezo-/ferro-/pyro-electric response

A ternary 0.49BF-0.20PMN-0.31PT ceramic with composition at morphotropic phase boundary has been synthesized using the solid-state reaction method. The perovskite phase of synthesized 0.49BF-0.20PMN-0.31PT ceramic with monoclinic structure was confirmed by powder XRD. Dense microstructure with uniform grain was revealed by the FESEM micrograph. An excellent dielectric response with a high dielectric constant value, high-phase transition temperature ( T c = 275 °C) and low dielectric loss was obtained. A large value of piezoelectric coefficient ( d 33 * = 632 pm/V) was achieved from the butterfly loop. The pyroelectric study revealed an excellent pyroelectric response for the ceramic. BF-PMN-PT ceramic displayed excellent ferroelectric P-E hysteresis loops with good fatigue resistance. The magnetic hysteresis loop (M-H) was traced at room temperature which displayed weak ferromagnetic nature of the sample. The obtained properties of the synthesized MPB composition of BF-PMN-PT indicate its great potential in ferroelectric device applications.