EXAFS Study of Nb Doped Sr(Co/Fe)O3–x Perovskites Full article
| Conference |
X-Ray Absorption Fine Structure : 12th International Conference 22-27 Jun 2003 , Malmö/Lund |
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| Journal |
Physica Scripta
ISSN: 0281-1847 , E-ISSN: 0031-8949 |
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| Output data | Year: 2005, Volume: T115, Pages: 740-743 Pages count : 4 | ||||
| Tags | Electrochemical oxidation; Extended X ray absorption fine structure spectroscopy; Oxygen; Oxygen vacancies; Perovskite; Positive ions | ||||
| Authors |
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| Affiliations |
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Funding (6)
| 1 | International Association for the Promotion of Co-operation with Scientists from the New Independent States of the Former Soviet Union | 2000-00180 |
| 2 | North Atlantic Treaty Organization | EST.CLG 979855 |
| 3 | Russian Foundation for Basic Research | 03-03-32340 |
| 4 | Russian Foundation for Basic Research | 03-03-32192 |
| 5 | Siberian Branch of the Russian Academy of Sciences | 42 |
| 6 | Президиум РАН | 4.3.6 |
Abstract:
The local structure of the Fe, Co and Nb surroundings of niobium doped Sr(Co/Fe)O3−x perovskites was studied by EXAFS spectroscopy. The samples were prepared by ceramic method at T = 1250 °C. In order to vary the oxygen content, the samples were (i) slowly cooled in the furnace, (ii) quenched in liquid N2 and electrochemically oxidised. According to EXAFS data, the Nb and Fe cations occupy octahedral positions even at low oxygen content. At the same time, the Co cations seemingly occupy highly distorted octahedral positions. It should be noted that the mean Co–O distance (~1.84 Å) is much shorter than the mean Fe–O (~1.92 Å) distance in this case. It was assumed that oxygen vacancies are mainly located near cobalt cation positions.
Cite:
Kriventsov V.V.
, Kochubey D.I.
, Ismagilov Z.R.
, Podyacheva O.Y.
, Nemudry A.P.
EXAFS Study of Nb Doped Sr(Co/Fe)O3–x Perovskites
Physica Scripta. 2005.
V.T115. P.740-743.
WOS
Scopus
РИНЦ
ANCAN
OpenAlex
EXAFS Study of Nb Doped Sr(Co/Fe)O3–x Perovskites
Physica Scripta. 2005.
V.T115. P.740-743.
WOS
Scopus
РИНЦ
ANCAN
OpenAlex
Dates:
| Submitted: | Jun 26, 2003 |
| Accepted: | Dec 17, 2003 |
Identifiers:
| Web of science: | WOS:000204272100223 |
| Scopus: | 2-s2.0-42149085601 |
| Elibrary: | 15041088 |
| Chemical Abstracts: | 2005:477195 |
| Chemical Abstracts (print): | 143:415006 |
| OpenAlex: | W2083717955 |