2026-06-07T23:47:58Zhttps://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

Cooperative oxygen ion dynamics in Gd_(2)Ti_(2-y)Zr_(y)O_(7) Moreno, K. J. Mendoza-Suárez, G. Fuentes, A. F. Garcia Barriocanal, Javier León Yebra, Carlos Santamaría Sánchez-Barriga, Jacobo © 2005 The American Physical Society. Authors from CINVESTAV-IPN thank CONACYT for fi- nancial support. Authors from Universidad Complutense acknowledge financial support from MCYT. K.J.M. thanks CINVESTAV-IPN for financial support during her stay at Universidad Complutense. 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. 2023-06-20T10:54:15Z 2023-06-20T10:54:15Z 2005-04-22 journal article 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/ eng open access American Physical Society