Analysis of the Atomic Scale Defect Chemistry in Oxygen Deficient Materials by STEM
Keyword(s):
AbstractThe 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.
1995 ◽
Vol 53
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pp. 320-321
1996 ◽
Vol 54
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pp. 530-531
1994 ◽
Vol 52
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pp. 972-973
1998 ◽
Vol 47
(6)
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pp. 561-574
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1995 ◽
Vol 53
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pp. 218-219