English   español  
Por favor, use este identificador para citar o enlazar a este item: http://hdl.handle.net/10261/146506
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

Self-arranged misfit dislocation network formation upon strain release in La0.7Sr0.3MnO3/LaAlO3(100) epitaxial films under compressive strain

AutorSantiso, José ; Roqueta, Jaume ; Bagués, Núria; Frontera Beccaria, Carlos; Konstantinović, Z.; Martínez Perea, Benjamín ; Pomar, Alberto ; Balcells, Lluis ; Sandiumenge, Felip
Palabras claveMisfit dislocation arrangement
Nanotemplate
Nanophase modulation
Strain relaxation
Fecha de publicación6-jul-2016
EditorAmerican Chemical Society
CitaciónACS Applied Materials and Interfaces 8(26): 16823-16832 (2016)
ResumenLattice-mismatched epitaxial films of LaSrMnO (LSMO) on LaAlO (001) substrates develop a crossed pattern of misfit dislocations above a critical thickness of 2.5 nm. Upon film thickness increases, the dislocation density progressively increases, and the dislocation spacing distribution becomes narrower. At a film thickness of 7.0 nm, the misfit dislocation density is close to the saturation for full relaxation. The misfit dislocation arrangement produces a 2D lateral periodic structure modulation (Λ≈ 16 nm) alternating two differentiated phases: one phase fully coherent with the substrate and a fully relaxed phase. This modulation is confined to the interface region between film and substrate. This phase separation is clearly identified by X-ray diffraction and further proven in the macroscopic resistivity measurements as a combination of two transition temperatures (with low and high T). Films thicker than 7.0 nm show progressive relaxation, and their macroscopic resistivity becomes similar than that of the bulk material. Therefore, this study identifies the growth conditions and thickness ranges that facilitate the formation of laterally modulated nanocomposites with functional properties notably different from those of fully coherent or fully relaxed material.
DescripciónSantiso, José et al.
Versión del editorhttps://doi.org/10.1021/acsami.6b02896
URIhttp://hdl.handle.net/10261/146506
DOI10.1021/acsami.6b02896
Identificadoresissn: 1944-8252
Aparece en las colecciones: (ICMAB) Artículos
(CIN2) Artículos
Ficheros en este ítem:
Fichero Descripción Tamaño Formato  
Santiso_ACSApplMatInt_2016_postprint.pdf1,87 MBAdobe PDFVista previa
Visualizar/Abrir
Mostrar el registro completo
 


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