Abstract
The cuprates La2 − x Sr1 + x Cu2O6 + δ(x = 0, 0.1, 0.2) are synthesized by solid-state method. Their dc conductivity was studied over the 373 to 1173 K temperature range and 10 to 2.1 × 104 Pa oxygen partial pressure range by using four-probe technique. It is shown that the cuprate conductivity in air is maximal at ∼673 K; it is 60 S/cm for La2SrCu2O6.09; 68 S/cm, for La1.9Sr1.1Cu2O6.18; and 81 S/cm, for La1.8Sr1.2Cu2O6.10. The thermal expansion coefficient of La2SrCu2O6.09 is determined by thermomechanical method and high-temperature X-ray diffraction method; its value (16 ppm K−1) shows that the material is compatible with the ceria-based solid electrolytes during the thermal cycling.
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Original Russian Text © G.N. Mazo, M.S. Kaluzhskikh, S.N. Savvin, L.S. Leonova, N.V. Lyskov, Yu.A. Dobrovol’skii, 2009, published in Elektrokhimiya, 2009, Vol. 45, No. 4, pp. 480–485.
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Mazo, G.N., Kaluzhskikh, M.S., Savvin, S.N. et al. The synthesis and transport properties of the cuprates La2 − x Sr1 + x Cu2O6 + δ . Russ J Electrochem 45, 450–455 (2009). https://doi.org/10.1134/S1023193509040156
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DOI: https://doi.org/10.1134/S1023193509040156