Electronic structure of layered ferroelectric high-k titanate La2Ti2O7

V. V. Atuchin, T. A. Gavrilova, Jean-Claude Grivel, V. G. Kesler

    Research output: Contribution to journalJournal articleResearchpeer-review

    Abstract

    The electronic structure of binary titanate La2Ti2O7 has been studied by x-ray photoelectron spectroscopy. Spectral features of valence band and all constituent element core levels have been considered. The Auger parameters of titanium and oxygen in La2Ti2O7 are determined as alpha(Ti) = 872.4 and alpha(O) = 1042.3 eV. Chemical bonding effects have been discussed with binding energy (BE) differences Delta(Ti) = (BE O 1s - BE Ti 2p(3/2)) = 71.6 eV and Delta(La) = (BE La 3d(5/2) - BE O 1s) = 304.7 eV as key parameters in comparison with those in several titanium- and lanthanum-bearing oxides.
    Original languageEnglish
    JournalJournal of Physics D: Applied Physics
    Volume42
    Issue number3
    Pages (from-to)035305
    ISSN0022-3727
    DOIs
    Publication statusPublished - 2009

    Keywords

    • Materials research
    • Superconducting materials for the energy sector

    Cite this