Abstract
The dielectric and energy storage properties of lead lanthanum strontium zirconate stannate titanate [(Pb0.92La0.04Sr0.02)((Zr0.70Sn0.30)1−x Ti x )O3] ceramics were investigated as a function of x (0.07 ≤ x ≤ 0.13). With increasing titanium content, the tolerance factor increased, resulting in decreased stability of antiferroelectric phase in the ceramics. As the titanium content was increased, the maximum dielectric constant increased and the temperature of the dielectric maximum shifted to lower values. According to the polarization–electric field hysteresis loops, both the charged and discharged energy densities increased consistently with the increase of titanium content. The unreleased energy densities also showed a systematic trend. From charge–discharge measurements based on the resistance load circuit, the released energy densities and power densities as a function of discharge time were determined over the investigated composition range.
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