Structural and Dielectric Properties of Sodium-Doped BaTiO₃ Ceramics Synthesized via Tartrate Precursor Technique

Document Type : Research and Reference

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physics department, faculty of science, Tanta university

Abstract

This study investigates the influence of sodium (Na) doping on the electric and dielectric properties of tetragonal barium titanate (BaTiO3) ceramics, specifically within the composition Ba1-xNaxTiO3 (BNT) where x = 0, 0.2, 0.4, 0.6. BNT ceramics were synthesized using the tartrate precursor technique. Structural characterization of the synthesized samples was performed using Fourier transform infrared (FTIR) spectroscopy and transmission electron microscopy (TEM). The FTIR spectra confirmed the successful formation of the composite samples, with TEM analysis corroborating the presence of a uniform tetragonal crystal structure across all compositions. A single-phase formation was consistently observed, indicating the stability of the tetragonal structure upon Na doping. The dielectric properties, particularly dielectric loss, were systematically analyzed as a function of temperature under various frequencies. The results demonstrate significant changes in the dielectric behaviour with increasing Na content, suggesting potential applications of Na-doped BaTiO3 in tunable dielectric devices and contributes to the understanding of doped BaTiO3 ceramics for their application in advanced electronic materials.

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Delta Journal of Science
Volume 49, Issue 1
September 2024
Pages 90-100

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