Abstract
Effect of magnesium on the sinterability, phase composition, microstructure, and transport properties of proton-conducting materials of composition LaY1–xMgxO3–δ (х = 0, 0.05, 0.1) was studied. Ceramic samples were obtained by using the citrate-nitrate synthesis method at various sintering temperatures (1250–1400°C). It was shown that, for the samples with x = 0.05 and 0.1, the relative density was no less than 95% at a sintering temperature of 1350°C, whereas undoped lanthanum nitrate has this density at 1450°C. An X-ray diffraction analysis and scanning electron microscopy demonstrated that introduction of a small amount of magnesium (x = 0.05) is sufficient for forming the single-phase and high-dense ceramics. Electrical conductivity data show that the LaY0.95Mg0.05O3–δ sample has high overall and ionic conductivities.
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Original Russian Text © A.V. Kas’yanova, Yu.G. Lyagaeva, N.A. Danilov, S.V. Plaksin, A.S. Farlenkov, D.A. Medvedev, A.K. Demin, 2018, published in Zhurnal Prikladnoi Khimii, 2018, Vol. 91, No. 5, pp. 656−663.
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Kas’yanova, A.V., Lyagaeva, Y.G., Danilov, N.A. et al. Ceramic and Transport Characteristics of Electrolytes Based on Mg-Doped LaYO3. Russ J Appl Chem 91, 770–777 (2018). https://doi.org/10.1134/S1070427218050075
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DOI: https://doi.org/10.1134/S1070427218050075