Crystalline Perovskite La 0.67-xLi 3x TiO 3: Preparation and Ionic Conducting Characterization

Nguyen Nang Dinh; Pham Duy Long; Le Dinh Trong

doi:10.15625/0868-3166/14/2/10699

Crystalline Perovskite La_0.67-xLi_3x TiO ₃: Preparation and Ionic Conducting Characterization

Nguyen Nang Dinh, Pham Duy Long, Le Dinh Trong

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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 La_0.67-xLi_3xTiO₃ with x = 0.06, 0.11 and 0.15 were prepared by solid-state-solution reactions at 1350⁰C from TiO₂, La₂O₃ and Li₂CO₃ Crystalline structure of these compounds was analyzed by XRD method. The ionic conducting property of La_0.67-xLi_3xTiO₃ 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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Published

07-09-2007

How to Cite

[1]

N. N. Dinh, P. D. Long and L. D. Trong, Crystalline Perovskite La 0.67-xLi 3x TiO 3: Preparation and Ionic Conducting Characterization, Comm. Phys. 14 (2007) 90–94. DOI: https://doi.org/10.15625/0868-3166/14/2/10699.

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Vol. 14 No. 2 (2004)

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Papers

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