English   español  
Por favor, use este identificador para citar o enlazar a este item: http://hdl.handle.net/10261/48718
COMPARTIR / IMPACTO:
Estadísticas
logo share SHARE logo core CORE   Add this article to your Mendeley library MendeleyBASE

Visualizar otros formatos: MARC | Dublin Core | RDF | ORE | MODS | METS | DIDL
Exportar a otros formatos:
Título

Influence of the Microstructure on the High-Temperature Transport Properties of GdBaCo2O5.5+δ Epitaxial Films

AutorBurriel, Mónica; Zapata, James ; Solís, Cecilia; Roqueta, Jaume ; Skinner, Stephen J.; Kilner, John A.; Santiso, José
Fecha de publicación2010
EditorAmerican Chemical Society
CitaciónChemistry of Materials 22(19): 5512–5520 (2010)
ResumenEpitaxial thin films of GdBaCo2O5.5+δ (GBCO) grown by pulsed laser deposition have been studied as a function of deposition conditions. The variation in film structure, domain orientation, and microstructure upon deviations in the cation composition have been correlated with the charge transport properties of the films. The epitaxial GBCO films mainly consist of single- and double-perovskite regions that are oriented in different directions depending on the deposition temperature. Additionally, cobalt depletion induces the formation of a high density of stacking defects in the films, consisting of supplementary GdO planes along the c-axis of the material. The presence of such defects progressively reduces the electrical conductivity. The films closer to the stoichiometric composition have shown p-type electronic conductivity at high pO2 with values as high as 800 S/cm at 330 °C in 1 atm O2, and with a pO2 power dependence with an exponent as low as 1/25, consistent with the behavior reported for bulk GBCO. These values place GBCO thin films as a very promising material to be applied as cathodes in intermediate temperature solid oxide fuel cells.
Descripción9 páginas, 13 figuras, 2 tablas.-- et al.
Versión del editorhttp://dx.doi.org/10.1021/cm101423z
URIhttp://hdl.handle.net/10261/48718
DOI10.1021/cm101423z
ISSN0897-4756
E-ISSN1520-5002
Aparece en las colecciones: (CIN2) Artículos
Ficheros en este ítem:
No hay ficheros asociados a este ítem.
Mostrar el registro completo
 

Artículos relacionados:


NOTA: Los ítems de Digital.CSIC están protegidos por copyright, con todos los derechos reservados, a menos que se indique lo contrario.