TY - JOUR
T1 - Cooperative oxygen ion dynamics in Gd2Ti2-yZryO7
AU - Moreno, K. J.
AU - Mendoza-Suárez, G.
AU - Fuentes, A. F.
AU - García-Barriocanal, J.
AU - León, C.
AU - Santamaria, J.
PY - 2005
Y1 - 2005
N2 - We report on dispersive conductivity measurements in the oxygen ion conductor Gd2 (Ti2-y Zry) O7. Increasing Zr content leads to higher concentration of oxygen vacancies and results in higher activation energies for long-range ion transport, whilst the microscopic energy barrier for single ion hopping remains constant. We find evidence that, besides oxygen binding energy, enhanced cooperativity in oxygen ion dynamics determines the activation energy for long-range diffusion.
AB - We report on dispersive conductivity measurements in the oxygen ion conductor Gd2 (Ti2-y Zry) O7. Increasing Zr content leads to higher concentration of oxygen vacancies and results in higher activation energies for long-range ion transport, whilst the microscopic energy barrier for single ion hopping remains constant. We find evidence that, besides oxygen binding energy, enhanced cooperativity in oxygen ion dynamics determines the activation energy for long-range diffusion.
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U2 - 10.1103/PhysRevB.71.132301
DO - 10.1103/PhysRevB.71.132301
M3 - Article
AN - SCOPUS:28744443161
SN - 1098-0121
VL - 71
JO - Physical Review B - Condensed Matter and Materials Physics
JF - Physical Review B - Condensed Matter and Materials Physics
IS - 13
M1 - 132301
ER -