X-Ray Absorption Spectroscopy of BaPb1 - xBixO3 - δ and Ba1 - xKxBiO3 - δ, Superconducting Oxides Full article
Conference |
8th International Conference on X-ray Absorption Fine Structure 28 Aug - 2 Sep 1994 , Berlin |
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Journal |
Physica B: Condensed Matter
ISSN: 0921-4526 , E-ISSN: 1873-2135 |
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Output data | Year: 1995, Volume: 208-209, Number: C, Pages: 295-296 Pages count : 2 DOI: 10.1016/0921-4526(94)00681-K | ||||
Tags | LOCAL-STRUCTURE | ||||
Authors |
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Affiliations |
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Funding (1)
1 | International Science Foundation | MG 2000 |
Abstract:
X-ray absorption measurements have been made above the L3-Bi(Pb) edges of Bi-based 3D superconductive oxides: BaPb1−xBixO3−δ(x = 0,0.25, 1; δ ⩽ 0.2) and Ba1−xKxBiO3−δ (x = 0.4; δ ⩽ 0.2). The EXAFS data indicate that the Pb positions in BaPbO3 are equivalent but the Bi environment has two different BiO distances for BaBiO3. The Bi valence state has been determined from XANES spectra analysis. The character of changes observed under oxygen deficiency and the interpretation of NES spectra carried out by ab-initio MS calculation give us the opportunity to confirm that the Bi valence state differs from the Pb one. The disproportionation of Bi4+ in two different Bi valence states takes place for both compounds, but besides Bi3+ the second valence state is probably Bi+3-Ln, n = 1, 2.
Cite:
Menushenkov A.P.
, Ignatov A.Y.
, Klementev K.V.
, Kochubey D.I.
X-Ray Absorption Spectroscopy of BaPb1 - xBixO3 - δ and Ba1 - xKxBiO3 - δ, Superconducting Oxides
Physica B: Condensed Matter. 1995. V.208-209. NC. P.295-296. DOI: 10.1016/0921-4526(94)00681-K WOS Scopus РИНЦ
X-Ray Absorption Spectroscopy of BaPb1 - xBixO3 - δ and Ba1 - xKxBiO3 - δ, Superconducting Oxides
Physica B: Condensed Matter. 1995. V.208-209. NC. P.295-296. DOI: 10.1016/0921-4526(94)00681-K WOS Scopus РИНЦ
Dates:
Published print: | Mar 1, 1995 |
Published online: | Jul 30, 2004 |
Identifiers:
Web of science | WOS:A1995QP96100111 |
Scopus | 2-s2.0-24544451906 |
Elibrary | 31113603 |
Chemical Abstracts | 1995:509454 |
Chemical Abstracts (print) | 122:277092 |
OpenAlex | W2031611052 |