2026-06-08T08:51:47Zhttps://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

Moreno, K. J. Mendoza-Suárez, G. Fuentes, A. F. Garcia Barriocanal, Javier León Yebra, Carlos Santamaría Sánchez-Barriga, Jacobo 2023-06-20T10:54:15Z 2023-06-20T10:54:15Z 2005-04-22 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/ 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. eng open access Cooperative oxygen ion dynamics in Gd_(2)Ti_(2-y)Zr_(y)O_(7) journal article