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.
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The authors extend their appreciation to the Deanship of Scientific Research at Majmaah University for funding this research work through the project number (R-2021-295).
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Jebli, M., Albedah, M.A., Dhahri, J. et al. Diffuse Phase Transition and Dielectric Tunability of Ba0.97La0.02TiO3 Relaxor Ferroelectric Ceramic. J Inorg Organomet Polym 32, 1334–1353 (2022). https://doi.org/10.1007/s10904-021-02189-6
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DOI: https://doi.org/10.1007/s10904-021-02189-6