Russian Journal of Electrochemistry

, Volume 41, Issue 3, pp 265–269 | Cite as

Ionic conduction of a high-temperature modification of Lu2Ti2O7

  • A. V. Shlyakhtina
  • A. E. Ukshe
  • L. G. Shcherbakova


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.

Key words

superionic conduction nanoceramic phase transitions order-disorder Lu2Ti2O7 


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Copyright information

© MAIK “Nauka/Interperiodica” 2005

Authors and Affiliations

  • A. V. Shlyakhtina
    • 1
  • A. E. Ukshe
    • 2
  • L. G. Shcherbakova
    • 1
  1. 1.Semenov Institute of Chemical PhysicsRussian Academy of SciencesMoscowRussia
  2. 2.Institute of Problems of Chemical PhysicsRussian Academy of SciencesChernogolovka, Moscow oblastRussia

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