Carrier mobility of iron oxide nanoparticles supported on ferroelectrics studied by Mössbauer spectroscopy

T. Okamoto, J. Kano, S. Nakamura, A. Fuwa, T. Otoyama, Y. Nakazaki, H. Hashimoto, J. Takada, M. Ito, N. Ikeda

    Research output: Contribution to journalArticle

    1 Citation (Scopus)

    Abstract

    57Fe Mössbauer spectroscopy was performed on two types of Fe oxide nanoparticles supported on a typical ferroelectric, BaTiO3. It was found that the valence state of FeO nanoparticles changed to a mixed 2+/3+ state at high temperature where BaTiO3 shows paraelectric behaviour. We attribute this phenomenon to the fluctuation of electric dipoles which realizes carrier injection into the Fe oxides. This is the first report which discusses a dynamical valence state of transition metal oxides supported on ferroelectrics.

    Original languageEnglish
    Pages (from-to)147-152
    Number of pages6
    JournalHyperfine Interactions
    Volume219
    Issue number1-3
    DOIs
    Publication statusPublished - 2013

    Keywords

    • Electric dipole
    • Ferroelectric
    • Mössbauer spectroscopy
    • Nanoparticles

    ASJC Scopus subject areas

    • Condensed Matter Physics
    • Nuclear and High Energy Physics
    • Atomic and Molecular Physics, and Optics
    • Physical and Theoretical Chemistry

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  • Cite this

    Okamoto, T., Kano, J., Nakamura, S., Fuwa, A., Otoyama, T., Nakazaki, Y., Hashimoto, H., Takada, J., Ito, M., & Ikeda, N. (2013). Carrier mobility of iron oxide nanoparticles supported on ferroelectrics studied by Mössbauer spectroscopy. Hyperfine Interactions, 219(1-3), 147-152. https://doi.org/10.1007/s10751-012-0687-3