Abstract
The complex dielectric permittivity and electrical conductivity for bulk cubic structure CeO2 (annealed at 1273 K for 10 h) are studied using capacitance (C) and the impedance Z(ω) measurements in a wide range of frequency (0.1 Hz–5 MHz) and at various temperatures (298–448 K). The measured dielectric permittivity and electrical conductivity data of CeO2 are analyzed using electric modulus formalism \( {\text{M}}^{*} \left( \omega \right) \), Nyquist plot, Jonscher’s universal power law, small polaron tunneling model and nearly constant loss model.
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