High-temperature dielectric relaxations in (Ce, Y) codoped BaZrO3 ceramics
Abstract
(Ce, Y) codoped BaZrO3 ceramics, BaZr0.1Ce0.7Y0.2O3-δ and BaZr0.4Ce0.4Y0.2O3-δ ceramics were synthesized via solution combustion based on the glycine nitrate process. The dielectric properties of the samples have been investigated in the temperature range from 300 to 1000 K and frequency range from 102 Hz to 106 Hz. It is observed that the samples exhibit colossal dielectric behavior in the temperature below ∼600 K. The colossal dielectric behavior is composed of two sets of relaxations with the low- and high-temperature relaxations being caused by the dipole pairs of
- Publication:
-
Materials Research Express
- Pub Date:
- July 2019
- DOI:
- 10.1088/2053-1591/ab10be
- Bibcode:
- 2019MRE.....6g5010S
- Keywords:
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- glycine nitrate process;
- dielectric relaxation;
- ionic conductivity