Artículo
Relationship between the synthesis parameters and the morphology of manganite nanoparticle-assembled nanostructures
Leyva de Guglielmino, Ana Gabriela; Troiani, Horacio Esteban
; Curiale, Carlos Javier
; Sanchez, Rodolfo Daniel
; Levy, Pablo Eduardo
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Fecha de publicación:
09/2007
Editorial:
Elsevier Science
Revista:
Physica B: Condensed Matter
ISSN:
0921-4526
Idioma:
Inglés
Tipo de recurso:
Artículo publicado
Clasificación temática:
Resumen
Nanoparticles assembled into nanostructures (NAN) of manganese perovskite oxides for different compositions and diameters have been synthesized following a template-assisted method. We discuss the relationship among geometrical, structural and nanostructural parameters observed when synthesizing LaMnO3, La0.66Sr0.33MnO3, La0.66Ca0.33MnO3 and La0.325Pr0.300Ca0.375MnO3 manganite based complex oxides. For all the studied compounds, the structures are composed of an assembly of small (some few tens of nanometers) grains. They form nanotubes above some threshold diameter of the template, and nanowires below it. Here we focus on the correlation between grain size and the diameter at which the tube to wire crossover occurs. The threshold for this tube to wall crossover seems to depend on the specific compound. We present evidence from TEM observations that allow a rationalization of several phenomena in the synthesis process.
Palabras clave:
Complex Oxides
,
Manganites
,
Nanostructures
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Colecciones
Articulos(CCT - PATAGONIA NORTE)
Articulos de CTRO.CIENTIFICO TECNOL.CONICET - PATAGONIA NORTE
Articulos de CTRO.CIENTIFICO TECNOL.CONICET - PATAGONIA NORTE
Citación
Leyva de Guglielmino, Ana Gabriela; Troiani, Horacio Esteban; Curiale, Carlos Javier; Sanchez, Rodolfo Daniel; Levy, Pablo Eduardo; Relationship between the synthesis parameters and the morphology of manganite nanoparticle-assembled nanostructures; Elsevier Science; Physica B: Condensed Matter; 398; 2; 9-2007; 344-347
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