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Ionic conduction of a high-temperature modification of Lu2Ti2O7

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Abstract

A nanoceramic product of the composition Lu2Ti2O7 is synthesized by a coprecipitation method with a subsequent sublimation drying and an annealing at 650–1650°C. The conduction of Lu2Ti2O7 synthesized at 1650°C is ionic (∼10−3 S cm−1 at 800°C). Thus, a new material with a high ionic conduction has been discovered. The ordering in Lu2Ti2O7 is studied by methods of RFA, RSA, IK spectroscopy, electron microscopy, and impedance spectroscopy. The existence of a low-temperature phase transition fluorite-pyrochlore at ∼800°C and a high-temperature conversion order-disorder at 1650°C are established.

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Authors and Affiliations

  1. Semenov Institute of Chemical Physics, Russian Academy of Sciences, ul. Kosygina 4, 119991, Moscow, Russia

    A. V. Shlyakhtina & L. G. Shcherbakova

  2. Institute of Problems of Chemical Physics, Russian Academy of Sciences, Institutskii pr. 16, 142432, Chernogolovka, Moscow oblast, Russia

    A. E. Ukshe

Authors
  1. A. V. Shlyakhtina
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  2. A. E. Ukshe
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  3. L. G. Shcherbakova
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Translated from Elektrokhimiya, Vol. 41, No. 3, 2005, pp. 298–303.

Original Russian Text Copyright © 2005 by Shlyakhtina, Ukshe, Shcherbakova.

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Shlyakhtina, A.V., Ukshe, A.E. & Shcherbakova, L.G. Ionic conduction of a high-temperature modification of Lu2Ti2O7 . Russ J Electrochem 41, 265–269 (2005). https://doi.org/10.1007/s11175-005-0060-9

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  • DOI: https://doi.org/10.1007/s11175-005-0060-9

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