Defect and Mixed Conductivity in Nanocrystalline Doped Cerium Oxide

Author

Toshio Suzuki
Igor Kosacki
Harlan U. Anderson, Missouri University of Science and TechnologyFollow

Abstract

The results obtained from a study on the microstructure and the electrical properties of Gd-doped CeO₂ thin films were reported. Dense, nanocrystalline films on sapphire substrates are prepared using a polymeric precursor spin coating technique. The electrical conductivity was studied as a function of temperature and oxygen activity and correlated with the grain size. For nanocrystalline Gd-doped CeO₂ thin films, the ionic conductivity increased with decreasing activation energy as the grain size decreased. A conductivity model was developed to analyze PO₂ behavior of the electrical conductivity. Using the conductivity model, the hopping energy of electron conduction and the enthalpy of oxygen vacancy formation were determined for different microstructures.

Recommended Citation

T. Suzuki et al., "Defect and Mixed Conductivity in Nanocrystalline Doped Cerium Oxide," Journal of the American Ceramic Society, vol. 85, no. 6, pp. 1492 - 1498, Wiley, Jan 2002.

The definitive version is available at https://doi.org/10.1111/j.1151-2916.2002.tb00302.x

Department(s)

Materials Science and Engineering

Publication Status

Full Access

International Standard Serial Number (ISSN)

0002-7820

Document Type

Article - Journal

Document Version

Citation

File Type

text

Language(s)

English

Rights

© 2024 Wiley, All rights reserved.

Publication Date

01 Jan 2002