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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 y Santamaría Sánchez-Barriga, Jacobo y León Yebra, Carlos y Blochowicz, T. y Gainaru, C. y 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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URL Oficial: http://dx.doi.org/10.1063/1.1568169


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Resumen

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.


Tipo de documento:Artículo
Información Adicional:

© 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.

Palabras clave:Amorphous solids; AC conductivity; Electric-field; Time-domain; Relaxation; Glasses; Conductors; Universality; Explanation; Diffusion.
Materias:Ciencias > Física > Electricidad
Ciencias > Física > Electrónica
Código ID:31017
Depositado:24 Jun 2015 07:09
Última Modificación:24 Jun 2015 07:09

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