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Transition to Electronic Conduction at the Onset of Flash in Cubic Zirconia

15 Pages Posted: 8 Jul 2019 Publication Status: Accepted

See all articles by Seohyeon Jo

Seohyeon Jo

University of Colorado at Boulder - Materials Science Program

Rishi Raj

University of Colorado at Boulder - Materials Science Program

Abstract

We report in-situ measurements of impedance spectroscopy during flash experiments with single crystals of cubic-yttria stabilized zirconia, conducted in ambient air at 300 °C to 700 °C under a direct current electric field. Platinum electrodes transition from blocking to non-blocking behavior just before the onset of flash, indicating a transition to partial electronic conductivity during the incubation period. Even though the conductivity continued to increase with temperature the electron transport remained at a plateau of 0.25. This result has ramifications not only in the fundamental understanding but also in technological significance of the flash phenomenon.

Keywords: flash, single crystal zirconia, incubation time, mixed ionic and electronic conductivity

Suggested Citation

Jo, Seohyeon and Raj, Rishi, Transition to Electronic Conduction at the Onset of Flash in Cubic Zirconia (July 4, 2019). Available at SSRN: https://ssrn.com/abstract=3414705 or http://dx.doi.org/10.2139/ssrn.3414705

Seohyeon Jo (Contact Author)

University of Colorado at Boulder - Materials Science Program

Boulder, CO 80302
United States

Rishi Raj

University of Colorado at Boulder - Materials Science Program ( email )

Boulder, CO 80302
United States

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