Transition to electronic conduction at the onset of flash in cubic zirconia

Seohyeon Jo; Rishi Raj

doi:10.1016/j.scriptamat.2019.07.043

Transition to electronic conduction at the onset of flash in cubic zirconia

Seohyeon Jo
, Rishi Raj

Research output: Contribution to journal › Article › peer-review

39 Scopus citations

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 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 approximately 0.25. This result has ramifications not only in the fundamental understanding but also in technological significance of the flash phenomenon.

Original language	English
Pages (from-to)	29-32
Number of pages	4
Journal	Scripta Materialia
Volume	174
DOIs	https://doi.org/10.1016/j.scriptamat.2019.07.043
State	Published - Jan 1 2020
Externally published	Yes

Funding

This research was supported by a grant from the Office of Naval Research , N00014-18-1-2270 , under the direction of Dr. Antti Makinen. SJ expresses her thanks for Dr. Xavier Vendrell, and RR to Prof. Tony West for their help and guidance in the preparation of this manuscript.

Keywords

Flash
Incubation time
Mixed ionic and electronic conductivity
Single crystal zirconia

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10.1016/j.scriptamat.2019.07.043

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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 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 approximately 0.25. This result has ramifications not only in the fundamental understanding but also in technological significance of the flash phenomenon.",

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AU - Raj, Rishi

PY - 2020/1/1

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N2 - 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 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 approximately 0.25. This result has ramifications not only in the fundamental understanding but also in technological significance of the flash phenomenon.

AB - 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 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 approximately 0.25. This result has ramifications not only in the fundamental understanding but also in technological significance of the flash phenomenon.

KW - Flash

KW - Incubation time

KW - Mixed ionic and electronic conductivity

KW - Single crystal zirconia

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VL - 174

SP - 29

EP - 32

JO - Scripta Materialia

JF - Scripta Materialia

ER -

Transition to electronic conduction at the onset of flash in cubic zirconia

Abstract

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Keywords

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