SrT iO3 (ST) ceramics were fabricated through the conventional solid-state reaction route. X- ray diffraction (XRD), microstructural, and temperature dependence of dielectric spectra at low temperature were systematically studied. XRD study revealed that the prepared ST ceramics were a single perovskite cubic phase with \(pm\overline{3 }m\) space group. 98% density was obtained from Archimedes principle. Average grain size is calculated using grain size distribution in the microstructure of the prepared ST ceramics. Temperature-dependent dielectric spectra showed strong variation of dielectric constant with tiny dielectric loss. Relaxations were observed at temperatures below 150 K. Curie–Weiss law confirmed the paraelectric nature of the ST ceramics. Constant nature of the real part of the dielectric constant with frequency and impedance study revealed the usefulness of the ST ceramics in various electronic applications. Jonscher’s power law was used to analyse the ac conductivity, and activation was calculated as 0.063 eV, revealing that the dipolar defects were responsible for conductivity.
