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Preparation and Electrical Conductivity of BaZr1 – xRxO3 – α(R = Sc, Y, Ho, Dy, Gd, In)

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Abstract

The influence of process parameters on the density of BaZr0.9Y0.1O3proton-conducting ceramics was investigated. Dense ceramics (94–96% of theoretical density) were obtained by synthesis from coprecipitated zirconium and yttrium hydroxides and barium carbonate, followed by sintering at 1700°C. The conductivity of BaZr0.93R0.07O3 – α(R = Sc, Y, Ho, Dy, Gd, In) was measured as a function of temperature and oxygen partial pressure and was found to decrease in the order Y > Ho > Sc > Dy, In > Gd. In air, these materials are hole–ion conductors. At 800°C, BaZr0.93Y0.07O3 – αhas an ionic transference number of 0.16 and ionic conductivity of 3.6 × 10–4S/cm.

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Authors and Affiliations

  1. Institute of High-Temperature Electrochemistry, Ural Division, Russian Academy of Sciences, ul. S. Kovalevskoi 20, Yekaterinburg, 620219, Russia

    V. P. Gorelov & V. B. Balakireva

  2. All-Russia Research Institute of Technical Physics, Russian Federal Nuclear Center, Snezhinsk, Chelyabinsk oblast, 454070, Russia

    Yu. N. Kleshchev & V. P. Brusentsov

Authors
  1. V. P. Gorelov
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  2. V. B. Balakireva
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  3. Yu. N. Kleshchev
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  4. V. P. Brusentsov
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Gorelov, V.P., Balakireva, V.B., Kleshchev, Y.N. et al. Preparation and Electrical Conductivity of BaZr1 – xRxO3 – α(R = Sc, Y, Ho, Dy, Gd, In). Inorganic Materials 37, 535–538 (2001). https://doi.org/10.1023/A:1017553506634

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