Influences of A-site Partial Substitution for BaCo0.7Fe0.3O3 Oxide on Perovskite Structure and Oxygen Permeability

Oxygen permeation property of A-site partially substituted barium cobaltites, A′xBa1-xCo0.7Fe0.3O3-δ (A′=Ba, Pr, Gd, Dy, Y and Yb), were examined. Substitution of Ba by Dy, Y or Yb was found to stabilize cubic perovskite structure even when x remained as small as 0.05. As a result, oxygen permeation...

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Published in:Chemistry letters 2002-03, Vol.31 (3), p.344-345
Main Authors: Kinoshita, Kazuya, Kusaba, Hajime, Sakai, Go, Shimanoe, Kengo, Miura, Norio, Yamazoe, Noboru
Format: Article
Language:English
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Summary:Oxygen permeation property of A-site partially substituted barium cobaltites, A′xBa1-xCo0.7Fe0.3O3-δ (A′=Ba, Pr, Gd, Dy, Y and Yb), were examined. Substitution of Ba by Dy, Y or Yb was found to stabilize cubic perovskite structure even when x remained as small as 0.05. As a result, oxygen permeation through the disks made of these oxides appeared at temperature lower than 500 °C, and reached fairly high levels at elevated temperature.
ISSN:0366-7022
1348-0715
DOI:10.1246/cl.2002.344