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Analysis of the Atomic Scale Defect Chemistry in Oxygen Deficient Materials by STEM

Published online by Cambridge University Press:  10 February 2011

Y. Ito ,
S. Stemmer ,
R. F. Klie ,
N. D. Browning ,
A. Sane  and
T. J. Mazanec
Y. Ito
Affiliation:
BP Chemicals Inc, 4440 Warrensville Center Road, Cleveland, OH 44128-2837.
S. Stemmer
Affiliation:
BP Chemicals Inc, 4440 Warrensville Center Road, Cleveland, OH 44128-2837.
R. F. Klie
Affiliation:
BP Chemicals Inc, 4440 Warrensville Center Road, Cleveland, OH 44128-2837.
N. D. Browning
Affiliation:
BP Chemicals Inc, 4440 Warrensville Center Road, Cleveland, OH 44128-2837.
A. Sane
Affiliation:
Department of Physics, University of Illinois, 845 W. Taylor St., Chicago, IL 60607-7059.
T. J. Mazanec
Affiliation:
Department of Physics, University of Illinois, 845 W. Taylor St., Chicago, IL 60607-7059.
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Abstract

The high mobility of anion vacancies in oxygen deficient perovskite type materials makes these ceramics potential candidates for oxygen separation membranes. As a preliminary investigation of the defect chemistry in these oxides, we show here the analysis of SrCoO3−σ using atomic resolution Z-contrast imaging and electron energy loss spectroscopy in the scanning transmission electron microscope. In particular, after being subjected to oxidation/reduction cycles at high temperatures we find the formation of ordered microdomains with the brownmillerite structure.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 589 , 1999 , 69
Copyright
Copyright © Materials Research Society 2001

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References

[1] Bouwmeester, H. J. M., Burggraaf, A. J., CRC Handbook of Solid State Electrochemistry (eds. Gellings, P. J., Bouwmeester, H. J. M.), Ch 14. pp. 481–553, CRC Boca Raton, FL (1997).Google Scholar
[2] Pennycook, S. J. and Jesson, D. E., Phys. Rev. Lett 64, 938 (1990).Google Scholar
[3] Egerton, R. F., Electron Energy Loss Spectroscopy in the Electron Microscope (Plenum, 1996).Google Scholar
[4] Browning, N. D., Chisholm, M. F. and Pennycook, S. J., Nature 366, 143 (1993).Google Scholar
[5] James, E. M. and Browning, N. D., Ultramicroscopy 78, 125 (1999).Google Scholar
[6] Stemmer, S., Sane, A., Browning, N. D., Mazanec, T. J., in press Solid State IonicsGoogle Scholar
[7] Rodriguez, J., González-Calbet, J. M., Grenier, J. C., Pannetier, J., Anne, M., Solid State Commun. 62, 231 (1987).Google Scholar
[8] Nellist, P. D. and Pennycook, S. J., Ultramicroscopy 78, 111 (1999).Google Scholar
[9] Ankudinov, A. L., Ravel, B., Rehr, J. J. and Conradson, S. D., Phys Rev B 58, 7565 (1998).Google Scholar
[10] Berggren, J., Acta Chemica Scandinavica 25, 3616 (1971).Google Scholar
[11] Wang, Z. L., Yin, J. S., Philos. Mag. B 77, 49 (1998).Google Scholar