Abstract
(1−x)BaTiO3-xBiMg2/3Ta1/3O3 (x=0.3–0.6) ceramics were fabricated via conventional solid state sintering route. X-ray diffraction results showed single perovskite phase for x=0.3–0.5 while secondary phase was formed for x=0.6 sample. Raman data was consistent with XRD data indicating the formation of cubic structure. The samples exhibited flat relative permittivity over a wide temperature range. The insulation resistance was found to be 109–1012Ω-cm and time constant 0.36–72.14s. Impedance spectroscopy analysis of the samples indicated single Debye-like peak in the spectroscopic plot, indicative of homogeneous electrical microstructure. The temperature-stable dielectric properties suggested that this material may be useful for capacitor applications.
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