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Non-Arrhenius conductivity in the fast ionic conductor Li_(0.05)La_(0.5)TiO_(3): reconciling spin-lattice and electrical-conductivity relaxations

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León Yebra, Carlos and Santamaría Sánchez-Barriga, Jacobo and París, M. A. and Sanz, J. and Ibarra, J. and Torres, L. M. (1997) Non-Arrhenius conductivity in the fast ionic conductor Li_(0.05)La_(0.5)TiO_(3): reconciling spin-lattice and electrical-conductivity relaxations. Physical review B, 56 (9). pp. 5302-5305. ISSN 0163-1829

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Official URL: http://dx.doi.org/10.1103/PhysRevB.56.5302


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http://journals.aps.org/UNSPECIFIED


Abstract

Nuclear magnetic resonance and electrical conductivity measurements are conducted to study the dynamics of the ionic diffusion process in the crystalline ionic conductor Li_(0.05)La_(0.5)TiO_(3). dc conductivity shows a nonArrhenius temperature dependence, similar to the one recently reported for some ionic conducting glasses. Spin-lattice and conductivity relaxations are analyzed in the same frequency and temperature range in terms of the non-Arrhenius dependence of the correlation time. Both relaxations are then described using a single correlation function of the form f(t)=exp(-(t/τ)^(β)), with β=0.4 over the whole temperature range.


Item Type:Article
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© 1997 The American Physical Society.

Uncontrolled Keywords:Glasses; Model; NMR.
Subjects:Sciences > Physics > Electricity
Sciences > Physics > Electronics
ID Code:31234
Deposited On:21 Jul 2015 08:30
Last Modified:10 Dec 2018 14:58

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