TY - JOUR
T1 - Effects of reduced dimensionality in the relaxation dynamics of ionic conductors
AU - Castro, M.
AU - Rivera, A.
AU - García-Barriocanal, J.
AU - Domínguez-Adame, F.
AU - Belous, A. G.
AU - Santamaría, J.
AU - León, C.
PY - 2005/3/1
Y1 - 2005/3/1
N2 - We report on the dispersive ionic conductivity in Li0.5-xNa xLa0.5TiO3 (0 ≤ x ≤ 0.5), where the number of available positions for the mobile Li ions is reduced by introducing immobile Na ions. At high frequency the conductivity is power law dependent with an exponent which increases as the number of accessible neighboring sites decreases. This result is quantitatively accounted for in terms of a one-parameter statistical microscopic model. We provide experimental and theoretical evidence for the importance of reduced dimensionality resulting from the blocked pathways in slowing down the dynamics of diffusing ions.
AB - We report on the dispersive ionic conductivity in Li0.5-xNa xLa0.5TiO3 (0 ≤ x ≤ 0.5), where the number of available positions for the mobile Li ions is reduced by introducing immobile Na ions. At high frequency the conductivity is power law dependent with an exponent which increases as the number of accessible neighboring sites decreases. This result is quantitatively accounted for in terms of a one-parameter statistical microscopic model. We provide experimental and theoretical evidence for the importance of reduced dimensionality resulting from the blocked pathways in slowing down the dynamics of diffusing ions.
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U2 - 10.1209/epl/i2004-10419-7
DO - 10.1209/epl/i2004-10419-7
M3 - Article
AN - SCOPUS:14844307639
VL - 69
SP - 770
EP - 776
JO - Journal de Physique (Paris), Lettres
JF - Journal de Physique (Paris), Lettres
SN - 0295-5075
IS - 5
ER -