Abstract
Lead-free La0.02Ba0.97TiO3 (2LBT) ceramic was elaborated via the molten-salt method characterized by XRD and Raman spectroscopy. Further their electric, dielectric, and ferroelectric properties were investigated. XRD results demonstrate that the sample possessed a pure-tetragonal structure with a space group of P4/mmm. The notable effect of incorporating the La3+ cation into an A-site sublattice was clarified using Raman spectroscopy. Significant improvements have been demonstrated in dielectric properties. The observed relaxation is attributed to Maxwell–Wagner polarization. 2LBT sample demonstrated a 3 phase transition with negligible frequency dispersion indicating diffuse phase transition at the specific temperature range (292–700 K). Upper than 700 K, 2LBT sample provided a pointy transition. The electrical properties obtained from the complex electric modulus reveal a conduction process owing to the short-range mobility of charge carrier. Both ac and dc electrical conductivities are considered vs. frequency and temperature.