On the reversed crystal growth of BaZrO3 decaoctahedron: shape evolution and mechanism
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Otros documentos de la autoría: Moreira, Mario Lucio; Andres, Juan; Mastelaro, Valmor Roberto; Varela, José A.; Longo, Elson
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Mostrar el registro completo del ítemcomunitat-uji-handle:10234/9
comunitat-uji-handle2:10234/7013
comunitat-uji-handle3:10234/8638
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INVESTIGACIONMetadatos
Título
On the reversed crystal growth of BaZrO3 decaoctahedron: shape evolution and mechanismAutoría
Fecha de publicación
2011Editor
Royal Society of ChemistryISSN
1466-8033Cita bibliográfica
CrystEngComm (2011) vol. 13, p. 5818-5824Tipo de documento
info:eu-repo/semantics/articleVersión de la editorial
http://pubs.rsc.org/en/content/articlepdf/2011/ce/c1ce05361bVersión
info:eu-repo/semantics/publishedVersionPalabras clave / Materias
Resumen
BaZrO3 (BZO) nanoparticles were nucleated, grown and subsequently self-assembled into a 3D
decaoctahedronal architecture via a microwave-assisted hydrothermal (MAH) method. X-Ray
diffraction (XRD), field emission ... [+]
BaZrO3 (BZO) nanoparticles were nucleated, grown and subsequently self-assembled into a 3D
decaoctahedronal architecture via a microwave-assisted hydrothermal (MAH) method. X-Ray
diffraction (XRD), field emission scanning microscopy (FE-SEM), X-ray absorption spectroscopy
(XAFS) as well as both photoluminescence (PL) and radioluminescence (RL) emission studies have
provided fundamental insight into the nature of the anisotropic crystal growth mechanism of BZO
nanocrystals into their final decaoctahedral shape. The growth mechanism of the assembled
nanoparticles via mesoscale transformations to form BZO decaoctahedrons occurs from the surface to
the core along a reversed crystallization route. This pathway is accompanied by a large enhancement of
RL emissions while the intensity of PL emissions is enhanced and worsened along the process. The
analysis of the results reveals a relationship between the decaoctahedrons obtained and their optical
properties. [-]
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