Frequency dependence of ionic conductivity in a two-dimensional system of Ag β-alumina

O. Kamishima, Y. Iwai, Junichi Kawamura

    Research output: Contribution to journalArticlepeer-review

    4 Citations (Scopus)

    Abstract

    Measurements of the complex impedance of a single crystal of Ag β-alumina have been made in the frequency range of 1 Hz-106 Hz. Ag β-alumina is an ideal two-dimensional superionic conductor (SIC). The slope of AC conductivity σ(ω) was investigated in the temperature range from approximately 100 K to room temperature. A small power-law dependence σ(ω) ∞ ωs was found, with the slope s being evaluated as 0.11-0.15. In the present study, a "scale-invariance" for SIC with a two-dimensional disordered system was suggested from the small power-law dependence.

    Original languageEnglish
    Pages (from-to)495-499
    Number of pages5
    JournalSolid State Ionics
    Volume262
    DOIs
    Publication statusPublished - 2014 Sep 1

    Keywords

    • Power-law conductivity
    • Scale-invariance
    • β-Alumina

    ASJC Scopus subject areas

    • Chemistry(all)
    • Materials Science(all)
    • Condensed Matter Physics

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