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Temperature dependence of the ionic conductivity in Li_(3x)La_(2/3-x)TiO_(3): arrhenius versus non-Arrhenius

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Rivera Calzada, Alberto Carlos and Santamaría Sánchez-Barriga, Jacobo and León Yebra, Carlos and Blochowicz, T. and Gainaru, C. and Rössler, E. A. (2003) Temperature dependence of the ionic conductivity in Li_(3x)La_(2/3-x)TiO_(3): arrhenius versus non-Arrhenius. Applied physics letters, 82 (15). pp. 2425-2427. ISSN 0003-6951

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Official URL: http://dx.doi.org/10.1063/1.1568169


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Abstract

We report on the temperature dependence of the ionic conductivity at low temperatures in the crystalline lithium ionic conductor Li_(0.18)La_(0.61)TiO_(3). Time domain measurements of the electric modulus have been performed to investigate ion dynamics in the frequency range 1025 – 102 Hz and for conductivity values in the range 10214 – 1028 S/cm. Ionic conductivity shows an Arrhenius temperature dependence below 300 K and down to 120 K, in contrast to the non-Arrhenius behavior found at higher temperatures, demonstrating that the temperature dependence of ionic conductivity in Li_(0.18)La_(0.61)TiO_(3) cannot be described by a Vogel–Fulcher–Tamman law.


Item Type:Article
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© 2003 American Institute of Physics. The authors thank Professor A. Várez for sample preparation. One of the authors (A.R.) thanks another (E.R.) for his hospitality during the stay in Bayreuth.

Uncontrolled Keywords:Amorphous solids; AC conductivity; Electric-field; Time-domain; Relaxation; Glasses; Conductors; Universality; Explanation; Diffusion.
Subjects:Sciences > Physics > Electricity
Sciences > Physics > Electronics
ID Code:31017
Deposited On:24 Jun 2015 07:09
Last Modified:10 Dec 2018 14:58

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