Abstract
The effect of hydrogen on the phase stability of both SrCe0.95Yb0.05O3 - α, (SCYb-5) powder and disk samples in both dry and wet hydrogen atmospheres was investigated. It was found that decomposition of the perovskite phase was especially evident in the disk samples treated in a dry hydrogen atmosphere, probably due to reduction of the tetravalent cerium ions to trivalent cerium ions in the sample. It was interesting to find that the extent of the decomposition of the perovskite phase was most influenced by the status (i.e. either disk or powder form) of the SCYb-5 samples, rather than the temperature or the extent of the reducing atmospheres. The findings of this study indicate that relaxation kinetics may play an important role in the phase stability of perovskite materials.
| Original language | English |
|---|---|
| Pages (from-to) | 833-835 |
| Number of pages | 3 |
| Journal | Materials Letters |
| Volume | 64 |
| Issue number | 7 |
| DOIs | |
| Publication status | Published - Apr 15 2010 |
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All Science Journal Classification (ASJC) codes
- Materials Science(all)
- Condensed Matter Physics
- Mechanics of Materials
- Mechanical Engineering
Cite this
Effects of hydrogen on phase stability of ytterbium doped strontium cerates. / Matsuka, Maki; Sakai, Takaaki; Matsumoto, Hiroshige; Braddock, Roger D.; Agranovski, Igor E.; Ishihara, Tatsumi.
In: Materials Letters, Vol. 64, No. 7, 15.04.2010, p. 833-835.Research output: Contribution to journal › Article
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TY - JOUR
T1 - Effects of hydrogen on phase stability of ytterbium doped strontium cerates
AU - Matsuka, Maki
AU - Sakai, Takaaki
AU - Matsumoto, Hiroshige
AU - Braddock, Roger D.
AU - Agranovski, Igor E.
AU - Ishihara, Tatsumi
PY - 2010/4/15
Y1 - 2010/4/15
N2 - The effect of hydrogen on the phase stability of both SrCe0.95Yb0.05O3 - α, (SCYb-5) powder and disk samples in both dry and wet hydrogen atmospheres was investigated. It was found that decomposition of the perovskite phase was especially evident in the disk samples treated in a dry hydrogen atmosphere, probably due to reduction of the tetravalent cerium ions to trivalent cerium ions in the sample. It was interesting to find that the extent of the decomposition of the perovskite phase was most influenced by the status (i.e. either disk or powder form) of the SCYb-5 samples, rather than the temperature or the extent of the reducing atmospheres. The findings of this study indicate that relaxation kinetics may play an important role in the phase stability of perovskite materials.
AB - The effect of hydrogen on the phase stability of both SrCe0.95Yb0.05O3 - α, (SCYb-5) powder and disk samples in both dry and wet hydrogen atmospheres was investigated. It was found that decomposition of the perovskite phase was especially evident in the disk samples treated in a dry hydrogen atmosphere, probably due to reduction of the tetravalent cerium ions to trivalent cerium ions in the sample. It was interesting to find that the extent of the decomposition of the perovskite phase was most influenced by the status (i.e. either disk or powder form) of the SCYb-5 samples, rather than the temperature or the extent of the reducing atmospheres. The findings of this study indicate that relaxation kinetics may play an important role in the phase stability of perovskite materials.
UR - http://www.scopus.com/inward/record.url?scp=76849093750&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=76849093750&partnerID=8YFLogxK
U2 - 10.1016/j.matlet.2010.01.031
DO - 10.1016/j.matlet.2010.01.031
M3 - Article
AN - SCOPUS:76849093750
VL - 64
SP - 833
EP - 835
JO - Materials Letters
JF - Materials Letters
SN - 0167-577X
IS - 7
ER -