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In the present paper, high temperature synthesis was used to prepare the complex electronic system 0.94 (Bi0.5Na0.5)TiO3-0.06 BaTiO3 (BNT-BT-6). The relationship between the structure and electrical properties have been presented. The crystal data (i.e. unit cell dimensions and tetragonal crystal system) was obtained by preliminary structural analysis using room temperature X-ray diffraction spectra. The unequally distributed and densely packed ceramics were observed in the SEM micrograph of the sintered sample. The vibrational modes of BNT-BT-6 system using room temperature Raman and FT-IR spectra were reported. Temperature and frequency dependent dielectric parameters of BNT-BT-6 exhibit the shift in transition temperature, enhancement of dielectric constant and decrease in dissipation factor of BNT on the addition of BT even in a small amount. Analysis of the frequency and temperature dependent electrical modulus and impedance data of the system shows that the material follows non-Debye type of dielectric relaxation process. The overview of grain effect on the capacitive and resistive characteristics of the BNT-BT-6 material was studied experimentally from the Nyquist plots. Analysis of conductivity spectra was used to calculate activation energy and determine the electrical transport mechanism of the material.

Fabrication, dielectric and electrical characteristics of 0.94 (BI0.5Na0.5)TiO3-0.06 BaTiO3 ceramics