2026-06-07T19:58:52Zhttps://docta.ucm.es/rest/oai/request

oai:docta.ucm.es:20.500.14352/514232023-08-26T06:43:08Zcom_20.500.14352_14col_20.500.14352_15

00925njm 22002777a 4500 dc Moreno, K. J. author Mendoza-Suárez, G. author Fuentes, A. F. author Garcia Barriocanal, Javier author León Yebra, Carlos author Santamaría Sánchez-Barriga, Jacobo author 2005-04-22 We report on dispersive conductivity measurements in the oxygen ion conductor Gd_(2)(Ti_(2−y)Zr_(y))O_(7). 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. 1098-0121 10.1103/PhysRevB.71.132301 https://hdl.handle.net/20.500.14352/51423 http://dx.doi.org/10.1103/PhysRevB.71.132301 http://journals.aps.org/ Cooperative oxygen ion dynamics in Gd_(2)Ti_(2-y)Zr_(y)O_(7)