Studies of structural and electrical characteristics of multi-substituted Bi0.5Na0.5TiO3 ferroelectric ceramics

In this communication, preliminary structural and detailed electrical characteristics of the CaSnO3/CaSeO3-modified Bi0.5Na0.5TiO3 ceramics a general chemical composition (1–2x) [Bi0.5Na0.5TiO3] + x (CaSnO3) (CaSeO3) with = 0, 0.05, 0.10, 0.15, has been prepared by high-temperature solid-state reaction method calcination sintering temperature 925 °C 950 °C, respectively, for 5 h. Structural parent compound have significantly tailored addition equal percentage CaSnO3, CaSeO3 over wide range (25–400 °C) as well frequency (1 kHz–1 MHz). Room-temperature X-ray diffraction (XRD) analysis confirms development single-phase (with rhombohedral symmetry) very small amount impurity phase in higher concentrations (x). dielectric spectroscopy, two peaks are observed at around temperatures 210 320 indicating multiple transitions different types including ferroelectric to paraelectric through anti-ferroelectric. Impedance data exhibits both negative/and positive coefficient resistance materials. The Nyquist plots determine grain boundary effect capacitive resistive properties materials, also non-Debye type relaxation. room-temperature hysteresis loop existence ferroelectricity compounds where leakage current Ohmic behavior