English   español  
Por favor, use este identificador para citar o enlazar a este item: http://hdl.handle.net/10261/129788
Compartir / Impacto:
Estadísticas
Add this article to your Mendeley library MendeleyBASE
Visualizar otros formatos: MARC | Dublin Core | RDF | ORE | MODS | METS | DIDL
Título

Syntheses of the perovskite La2CuTiO6 by the ceramic, oxide precursors and sol-gel methods, and study of the structure and Cu-Ti distribution by X-ray and neutron diffraction

AutorPalacín, M. R.; Bassas, J.; Rodríguez-Carvajal, Juan; Gómez-Romero, P.
Palabras claveSol-gel
Neutron diffraction
Perovskite
Fecha de publicación1993
EditorRoyal Society of Chemistry (Great Britain)
CitaciónJournal of Materials Chemistry 3(11): 1171-1177 (1993)
ResumenThe mixed perovskite La2CuTiO6 has been prepared using several methods (classical ceramic, oxide precursors and sol-gel) in order to study the distribution of Cu and Ti in the lattice. This perovskite has an orthorhombically distorted structure [Pnma, standard group no. 62, a = 5.6262(6) Å, b = 7.8396(8) Å, c = 5.5702(6) Å, V = 245.7 Å3] of the GdFeO3 type, and not cubic symmetry as was reported earlier. The different synthetic methods used led to the same phase with different degrees of distortion. Starting from precursor oxides the reaction is faster and by the sol-gel method takes place at lower temperatures than for the ceramic synthesis. Detailed X-ray and neutron powder diffraction studies unambiguously show that Cu and Ti are disordered among the B sites of the perovskite, and give a quantitative idea of the distortion, which is less pronounced than in the case of GdFeO3 itself.
URIhttp://hdl.handle.net/10261/129788
DOI10.1039/JM9930301171
Identificadoresdoi: 10.1039/JM9930301171
issn: 0959-9428
e-issn: 1364-5501
Aparece en las colecciones: (ICMAB) Artículos
Ficheros en este ítem:
Fichero Descripción Tamaño Formato  
accesoRestringido.pdf15,38 kBAdobe PDFVista previa
Visualizar/Abrir
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.