The Korean Journal of Ceramics

The Korean Ceramic Society (한국세라믹학회)
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Modeling of Electrical Conductivity from $\sigma$tot vs. Po21/4 Plot in Wet Atmosphere for High-Temperature Proton-Conducting Oxides

  • Baek, Hyun-Deok (Department of Materials Science and Engineering, Hong-ik University)
  • Published : 1998.06.01
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Abstract

This work demonstrates a method for modeling of electrical conductivity in high-temperature proton-conducting oxides. Total conductivity was calculated assuming that it comprises partial conductivities contributed by protons, oxygen ions and electron holes. From the polt $\sigma_{tot}$ vs. $po_2\;{1/4}$ in wet atmosphere, thermodynamic and kinetic parameters were obtained representing transport properties such as concentration and mobility of the charge-carrying defects. The formulas for the calculation of partial conduction were derived based on the defect structure of HTPCs. Illustrative calculation were made for $SrCe_{0.95}Yb_{0.05}O_{2.975}$ system.

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References

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