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Preparation and Oxygen Permeability of La-Sr-Co-Fe Oxide Thin Films by a Chemical Solution Deposition Process

Published online by Cambridge University Press:  11 February 2011

Hirofumi Kakuta ,
Takashi Iijima  and
Hitoshi Takamura
Hirofumi Kakuta
Affiliation:
Smart Structure Research Center, National Institute of Advanced Industrial Science and Technology, Tsukuba Central 2, 1–1–1, Umezono, Tsukuba 305–8568, Japan Core Research for Evolutional Science and Technology (CREST), Japan Science and Technology Corporation (JST), 2–1–13, Higashi-Ueno, Taito-ku, Tokyo 110–0015, Japan
Takashi Iijima
Affiliation:
Smart Structure Research Center, National Institute of Advanced Industrial Science and Technology, Tsukuba Central 2, 1–1–1, Umezono, Tsukuba 305–8568, Japan
Hitoshi Takamura
Affiliation:
Department of Materials Science, Graduate School of Engineering, Tohoku University Aoba-yama02, Sendai 980–8579, Japan
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Abstract

Oxygen-ionic and electronic conductive thin films with the composition of La0.6Sr0.4Co0.5Fe0.5O3-α (LSCF) were prepared on a porous alumina substrate by a chemical solution deposition (CSD) process and their oxygen permeating flux densities were measured. Thickness of the LSCF layer on the substrate was about 0.4 μm. Oxygen flux density of the LSCF sample was found to be 0.6 μmol·cm-2·s-1, however, time-dependent degradation of oxygen flux was observed. The CeO2 barrier layer between the LSCF layer and the substrate was effective in order to improve time-dependent degradation of oxygen flux.

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References

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