Abstract
Monophasic, polycrystalline sample of Ba0.97La0.02Ti0.93Nb0.056O3 (termed as BLTi0.93Nb0.056) ceramic belonging to the space group P4/mmm has been prepared by appropriate chemical molten-salt-flux process, at the sintering temperature of 800 °C. Raman analyses and absorption spectra have indicated that the Nb5+ ions are incorporated sufficiently into the BLTi0.93Nb0.056-lattice. Raman spectroscopy is well suited as a non-destructive, preparation-free, and easy-to-handle means for species identification and site-occupancy analysis in our ceramic. As of the absorption spectra, the optical band gap (Eg), refractive index and Urbach energy (Eu) values have designed. The frequency (f) and temperature (T) dependence of the dielectric properties proved excellent outcomes. The real part of permittivity and dielectric tangent reduced with intensifying-(f). This upshot illuminates by a testimony of Maxwell–Wagner type of polarization as per with Koop’s theory. The temperature dependence of the dielectric properties was examined three parts are begun from phase transitions. To clarify the dielectric phenomenon, the Curie–Weiss laws have investigated. This demonstration is used to describe the ferro-paraelectric transition. The degree of disorder of the BLTi0.93Nb0.056 was assessing via the modified Curie–Weiss law. The enhanced dielectric and optical properties of the as-prepared ceramic define a proof to its excellence as a prospect material for devices.
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Jebli, M., Dhahri, J., Hamdaoui, N. et al. Nanoarchitectonics of Lead-Free Ba0.97La0.02Ti(1-x)Nb4x/5O3 Based Ceramic with Dielectrical and Raman Scattering Properties Studies. J Inorg Organomet Polym 32, 3708–3724 (2022). https://doi.org/10.1007/s10904-022-02364-3
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DOI: https://doi.org/10.1007/s10904-022-02364-3