Relaxor ferroelectric like giant permittivity in PrCrO3 semiconductor ceramics

▶ The effective permittivity of PrCrO3 ceramics exhibits giant permittivity value of 3 × 104 near room temperature. ▶ The temperature dependent permittivity for PrCrO3 resembles to that of CaCu3Ti4O12. ▶ The observed temperature and frequency dependent high permittivity in semiconducting PrCrO3 ceramics is dominated by grain boundary response.