Effect of mechanical stress on oxygen potential of transition metal oxides

Yuki Gonoi; Yuta Kimura; Keiji Yashiro; Satoshi Watanabe; Shin Ichi Hashimoto; Tatsuya Kawada

doi:10.1149/2.0181411jes

Effect of mechanical stress on oxygen potential of transition metal oxides

Yuki Gonoi, Yuta Kimura, Keiji Yashiro, Satoshi Watanabe, Shin Ichi Hashimoto, Tatsuya Kawada

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

2 Citations (Scopus)

Abstract

By applying a mechanical load, a transient shift of oxygen potential was observed on (La,Sr)CoO₃ and (La,Sr)FeO₃. The theoretical relationship between mechanical stress and oxygen potential shift in ionic solids is derived using thermodynamics. The oxygen potential shift due to the mechanical stress was measured as an electromotive force (EMF) by an oxygen concentration cell. When the mechanical stress was abruptly applied, the stepwise change and subsequent decay of EMF were observed. The maximum values of the EMF essentially corresponds to those from the thermodynamic calculations. The relaxation behavior of EMF can be interpreted in terms of chemical diffusion.

Original language	English
Pages (from-to)	F3111-F3116
Journal	Journal of the Electrochemical Society
Volume	161
Issue number	11
DOIs	https://doi.org/10.1149/2.0181411jes
Publication status	Published - 2014

ASJC Scopus subject areas

Electrochemistry
Electronic, Optical and Magnetic Materials
Materials Chemistry
Surfaces, Coatings and Films
Renewable Energy, Sustainability and the Environment
Condensed Matter Physics

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title = "Effect of mechanical stress on oxygen potential of transition metal oxides",

abstract = "By applying a mechanical load, a transient shift of oxygen potential was observed on (La,Sr)CoO3 and (La,Sr)FeO3. The theoretical relationship between mechanical stress and oxygen potential shift in ionic solids is derived using thermodynamics. The oxygen potential shift due to the mechanical stress was measured as an electromotive force (EMF) by an oxygen concentration cell. When the mechanical stress was abruptly applied, the stepwise change and subsequent decay of EMF were observed. The maximum values of the EMF essentially corresponds to those from the thermodynamic calculations. The relaxation behavior of EMF can be interpreted in terms of chemical diffusion.",

author = "Yuki Gonoi and Yuta Kimura and Keiji Yashiro and Satoshi Watanabe and Hashimoto, {Shin Ichi} and Tatsuya Kawada",

year = "2014",

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T1 - Effect of mechanical stress on oxygen potential of transition metal oxides

AU - Gonoi, Yuki

AU - Kimura, Yuta

AU - Yashiro, Keiji

AU - Watanabe, Satoshi

AU - Hashimoto, Shin Ichi

AU - Kawada, Tatsuya

PY - 2014

Y1 - 2014

N2 - By applying a mechanical load, a transient shift of oxygen potential was observed on (La,Sr)CoO3 and (La,Sr)FeO3. The theoretical relationship between mechanical stress and oxygen potential shift in ionic solids is derived using thermodynamics. The oxygen potential shift due to the mechanical stress was measured as an electromotive force (EMF) by an oxygen concentration cell. When the mechanical stress was abruptly applied, the stepwise change and subsequent decay of EMF were observed. The maximum values of the EMF essentially corresponds to those from the thermodynamic calculations. The relaxation behavior of EMF can be interpreted in terms of chemical diffusion.

AB - By applying a mechanical load, a transient shift of oxygen potential was observed on (La,Sr)CoO3 and (La,Sr)FeO3. The theoretical relationship between mechanical stress and oxygen potential shift in ionic solids is derived using thermodynamics. The oxygen potential shift due to the mechanical stress was measured as an electromotive force (EMF) by an oxygen concentration cell. When the mechanical stress was abruptly applied, the stepwise change and subsequent decay of EMF were observed. The maximum values of the EMF essentially corresponds to those from the thermodynamic calculations. The relaxation behavior of EMF can be interpreted in terms of chemical diffusion.

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