Crystalline Perovskite La<sub> 0.67-x</sub>Li<sub> 3x </sub> TiO <sub> 3</sub>: Preparation and Ionic Conducting Characterization

Authors

  • Nguyen Nang Dinh VNU
  • Pham Duy Long IMS, VAST
  • Le Dinh Trong Faculty of Physics, Hanoi Pedagogical University No. 2

DOI:

https://doi.org/10.15625/0868-3166/14/2/10699

Abstract

Crystalline perovskite La0.67-xLi 3x TiO 3 with x = 0.06, 0.11 and 0.15 were prepared by solid-state-solution reactions at 1350 0 C from TiO 2 , La 2 O 3 and Li 2 CO 3 Crystalline structure of these compounds was analyzed by XRD method. The ionic conducting property of La 0.67-x Li 3xTiO 3 was characterized on AutoLab. Potentiostat-PGS30 system with impedance technique using fitting software program available in the equipment. The highest ion conductivity at room temperature was found for the compound with x =0.11, namely $\sigma$ = 3.1 x 10 -5Scm -1. With increase of temperature the ionic conductivity increased and at 2000C it reached a value in two orders in magnitude higher (6 x 10 -3Scm -1). The activation energy of the compounds was determined on Ln($\sigma$) vs. 1/T plots and found to be as low as 0.36 eV.

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Author Biographies

Nguyen Nang Dinh, VNU

Journals of Science 70 Tran Hung Dao Str, Hanoi, Vietnam

Pham Duy Long, IMS, VAST

Institute of Materials Science, VAST

Le Dinh Trong, Faculty of Physics, Hanoi Pedagogical University No. 2

Faculty of Physics, Hanoi Pedagogical University No. 2

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Published

07-09-2007

How to Cite

Dinh, N. N., Long, P. D., & Trong, L. D. (2007). Crystalline Perovskite La<sub> 0.67-x</sub>Li<sub> 3x </sub> TiO <sub> 3</sub>: Preparation and Ionic Conducting Characterization. Communications in Physics, 14(2), 90–94. https://doi.org/10.15625/0868-3166/14/2/10699

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Papers

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