Effect of atmospheric composition on the phase formation in the Ba-Bi-O system

The phase formation in the Ba-Bi-O system is significantly affected by oxygen pressure during its synthesis. The reason for the sensitivity of this system to oxygen pressure consists in mobile coexistence of bismuth ions in different oxidation states in the same oxide (Bi5+ and Bi3+, Bi3+ and Bi2+,...

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Published inBulletin of the Russian Academy of Sciences. Physics Vol. 71; no. 5; pp. 691 - 694
Main Authors Klinkova, L. A., Nikolaichik, V. I., Barkovskii, N. V., Fedotov, V. K.
Format Journal Article
LanguageEnglish
Published New York Springer Nature B.V 01.05.2007
Subjects
Atmospheric composition
Bismuth oxides
Composition effects
Ferroelectric materials
Homology
Oxidation
Superconductivity
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Summary:The phase formation in the Ba-Bi-O system is significantly affected by oxygen pressure during its synthesis. The reason for the sensitivity of this system to oxygen pressure consists in mobile coexistence of bismuth ions in different oxidation states in the same oxide (Bi5+ and Bi3+, Bi3+ and Bi2+, etc.). This circumstance determines the oxide structure type and the ability to formation of structural subtypes, i.e., oxides of an isostructural homologous series. The presence of bismuth ions in different oxidation states in the same oxide determines the variety of properties of both bismuth oxides and complex oxides on their basis (ferroelectric, semiconducting, superconducting, and other properties).
ISSN:1062-8738
1934-9432
DOI:10.3103/S1062873807050279