Abstract
Nanocrystalline Lu2O3-TiO2 (33.3–44 mol % Lu2O3) materials with a partially disordered pyrochlore structure, prepared via heat treatment in the range 1400–1750°C, are found to possess high oxygen ionic conductivity. Their 740°C conductivity is 10-3 to 10-2 S/cm, depending on the heat-treatment temperature and composition, which is comparable to that of the well-known fluorite solid electrolyte ZrO2-9 mol % Y2O3.
Similar content being viewed by others
REFERENCES
Goodenough, J.B., Oxide-Ion Conductors by Design, Nature (London), 2000, vol. 404, p. 821.
Boivin, J.C. and Mairesse, G., Recent Material Developments in Fast Oxide Ion Conductors, Chem. Mater., 1998, vol. 10, p. 2870.
Tuller, H.L., Kramer, S.A., Spears, M.A., and Pal, U.B., US Patent 5509189, 1996.
Moon, P.K. and Tuller, H.L., Evaluation of the Gd2(ZrTi1 - x )2O7 Pyrochlore System as an Oxygen Gas Sensor, Sen. Actuators, B, 1990, vol. 1, pp. 199–202.
Masasi Mori, Tompsett, G.M., Sammes, N.M., et al., Compatibility of GdxTi2O7 Pyrochlores (1.72 < x < 2.0) as Electrolytes in High-Temperature Solid Oxide Fuel Cell, Solid State Ionics, 2003, vol. 158, pp. 79–90.
Shlyakhtina, A.V., Shcherbakova, L.G., and Knotko, A.V., Study of New Order-Disorder Structural Transitions in Ln2M2O7 (Ln = Lu, Gd; M = Ti), Ferroelectrics, 2003, vol. 294, pp. 175–190.
Shlyakhtina, A.V., Shcherbakova, L.G., Knotko, A.V., and Steblevskii, A.V., Study of the Fluorite-Pyrochlore-Fluorite Phase Transitions in Ln2Ti2O7 (Ln = Lu, Yb, Tm), J. Solid State Electrochem., 2004, no. 8/9, pp. 661–667.
Shlyakhtina, A.V., Karyagina, O.K., and Shcherbakova, L.G., Order-Disorder Transformations in Ln2Ti2O7 (Ln = Lu, Yb, Tm, Gd), Neorg. Mater., 2004, vol. 40, no.1, pp. 67–74 [Inorg. Mater. (Engl. Transl.), vol. 40, no. 1, pp. 59–65].
Queyroux, F., Sur la formation de composés nouveaux dans les systèmes oxyde de titan-oxydes de terres rares, C. R. Seances Acad. Sci., Ser. C, 1964, vol. 259, pp. 1527–1529.
Izumi, F., The Rietveld Method, Oxford: Oxford Univ. Press, Yong. R.A., Ed., 1993.
Brixner, L.H., Preparation and Properties of the Ln2Ti2O7 Type Rare Earth Titanates, Inorg. Chem., 1964, vol. 3/7, p. 1065.
Van Dijk, M.P., de Vries, K.J., and Burggraaf, A.J., Oxygen Ion and Mixed Conductivity in Compounds with Fluorite and Pyrochlore Structures, Solid State Ionics, 1983, vol. 9/10, pp. 913–920.
Author information
Authors and Affiliations
Additional information
Translated from Neorganicheskie Materialy, Vol. 41, No. 3, 2005, pp. 324–331.
Original Russian Text Copyright © 2005 by Shlyakhtina, Mosunov, Stefanovich, Knotko, Karyagina, Shcherbakova.
Rights and permissions
About this article
Cite this article
Shlyakhtina, A.V., Mosunov, A.V., Stefanovich, S.Y. et al. Ionic conductivity in the Lu2O3-TiO2 system. Inorg Mater 41, 264–271 (2005). https://doi.org/10.1007/s10789-005-0121-1
Received:
Issue Date:
DOI: https://doi.org/10.1007/s10789-005-0121-1