HAL will be down for maintenance from Friday, June 10 at 4pm through Monday, June 13 at 9am. More information
Skip to Main content Skip to Navigation
Journal articles

Preparation and electrical properties of a pyrochlore-related Ce2Zr2O8−x phase

Abstract : A pyrochlore-related Ce2Zr2O8−x phase has been prepared in a reduction reoxidation process from Ce0.5Zr0.5O2 powders. Ce2Zr2O8−x, based on a cubic symmetry with a=1.053 nm, decomposes in nitrogen at 800 °C, but remains stable up to 900 °C in air. It shows mixed oxygen ionic and electronic conductivity. The bulk conductivity at 700 °C is 4×10−4 S cm−1 in air and 1×10−2 S cm−1 in nitrogen, and the activation energy is 1.27 eV in air. In nitrogen, the Arrhenius law is not obeyed, and a curved plot was obtained from 400 to 700 °C; then, the conductivity decreased rapidly due to the thermal decomposition of Ce2Zr2O8−x.
Document type :
Journal articles
Complete list of metadata

Contributor : Andrée-Aimée Toucas Connect in order to contact the contributor
Submitted on : Monday, July 18, 2011 - 10:34:14 AM
Last modification on : Monday, May 3, 2021 - 11:28:03 AM

Links full text



Hui Zhao, Nicolas Guillet, Françoise Valdivieso, Michèle Pijolat. Preparation and electrical properties of a pyrochlore-related Ce2Zr2O8−x phase. Solid State Ionics, Elsevier, 2003, 160 (3-4), pp.317-326. ⟨10.1016/S0167-2738(03)00207-8⟩. ⟨emse-00609089⟩



Record views