Experimental limitations in impedance spectroscopy: Part VI. Four-point measurements of solid materials systems

G. Hsieh, S. J. Ford, T. O. Mason, L. R. Pederson

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    Abstract

    Four-point impedance spectroscopy of solid materials systems is severely hampered by unavoidable voltage-divider effects associated with the reference electrodes. As demonstrated by test circuit studies and experiments with Pt/YSZ/Pt cells (with embedded silver reference electrodes), high impedance reference electrodes can produce distorted and erroneous impedance data. The relationships between these data and the sample properties (conductivity, dielectric constant) and instrument limitations (input impedance/capacitance) are derived. Successful four-point impedance measurements on conductive systems require large effective dielectric constants, which may be unattainable in bulk solids, but are often associated with internal interfaces.

    Original languageEnglish
    Pages (from-to)297-311
    Number of pages15
    JournalSolid State Ionics
    Volume100
    Issue number3-4
    Publication statusPublished - 1 Oct 1997

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    Keywords

    • Four-point measurements
    • Impedance spectroscopy

    ASJC Scopus subject areas

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

    Cite this

    Hsieh, G., Ford, S. J., Mason, T. O., & Pederson, L. R. (1997). Experimental limitations in impedance spectroscopy: Part VI. Four-point measurements of solid materials systems. Solid State Ionics, 100(3-4), 297-311.