Structural and dielectric studies of Bi (Ni_0.45Ti_0.45Fe_0.10) O₃ ceramics

In the present investigation, a solid solution of BiFeO₃ and NiTiO₃ i.e., Bi(Ni_0.45Ti_0.45Fe_0.10)O₃ (abbreviation is BNTF) have been synthesized using a solid-state reaction technique. Structural and dielectric properties of BNTF ceramics have been studied in details to understand their properties. Preliminary X-ray diffraction analysis confirm the formation of a new system, which is different from that of its parent compounds. Substitution of a small amount of NiTiO₃ into BiFeO₃ enhances dielectric and ferroelectric properties, and reduces electrical leakage current or tangent loss. It was shown by XRD that at room temperature structure of the compound is of single-phase with tetragonal symmetry. Some electrical characteristics (dielectric constant and loss) studied over a wide frequency (1 kHz–1 MHz) and temperature (25–400°C) ranges have provided many more interesting information useful for devices.