Electronic parameters of Sr2M2O7 (M = V, Nb, Ta) and Sr-O chemical bonding

Victor V. Atuchin, Jean-Claude Grivel, Zhaoming Zhang

    Research output: Chapter in Book/Report/Conference proceedingArticle in proceedingsResearch

    Abstract

    XPS measurements were carried out on Sr2Nb2O7 and Sr2Ta2O7 powder samples, which were synthesized using standard solid state method. The binding energy differences between the O 1s and cation core level, Δ(O-Sr) = BE(O 1s) - BE(Sr 3d5/2), was used to characterize the valence electron transfer on the formation of the Sr-O bonds. The chemical bonding effects were considered on the basis of our XPS results for Sr2Nb2O7 and Sr2Ta2O7 and the previously published structural and XPS data for other Sr-oxide compounds. A new empirical relationship between Δ(O-Sr) and L(Sr-O) was obtained. Possible applications of the relationship are discussed.
    Original languageEnglish
    Title of host publicationProceedings
    PublisherIEEE
    Publication date2010
    Pages34-36
    ISBN (Print)978-1-4244-6626-9
    DOIs
    Publication statusPublished - 2010
    Event11th Annual International Conference and Seminar on Micro/Nanotechnologies and Electron Devices - Novosibirsk, Russian Federation
    Duration: 30 Jun 20104 Jul 2010
    Conference number: 11

    Conference

    Conference11th Annual International Conference and Seminar on Micro/Nanotechnologies and Electron Devices
    Number11
    CountryRussian Federation
    CityNovosibirsk
    Period30/06/201004/07/2010

    Keywords

    • Materials and energy storage
    • Superconducting materials

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