Evolution of nanostructures of anatase TiO2 thin films grown on (001) LaAlO3 (Articolo in rivista)

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  • Evolution of nanostructures of anatase TiO2 thin films grown on (001) LaAlO3 (Articolo in rivista) (literal)
Anno
  • 2013-01-01T00:00:00+01:00 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#doi
  • 10.1007/s11051-013-1735-x (literal)
Alternative label
  • Regina Ciancio (1), Andrea Vittadini (3), Annabella Selloni (4), Riccardo Arpaia (5), Carmela Aruta (5), Fabio Miletto Granozio (5), Umberto Scotti di Uccio (5), Giorgio Rossi (2), Elvio Carlino (1) (2013)
    Evolution of nanostructures of anatase TiO2 thin films grown on (001) LaAlO3
    in Journal of nanoparticle research
    (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
  • Regina Ciancio (1), Andrea Vittadini (3), Annabella Selloni (4), Riccardo Arpaia (5), Carmela Aruta (5), Fabio Miletto Granozio (5), Umberto Scotti di Uccio (5), Giorgio Rossi (2), Elvio Carlino (1) (literal)
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  • 15 (literal)
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  • 6 (literal)
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  • 1. CNR-IOM TASC, Area Science Park Basovizza, 34146, Trieste, Italy 2. CNR-IOM TASC and Department of Physics, University of Milano, Via Celoria 16, 20100, Milan, Italy 3. CNR-ISTM and CR-INSTM Village, Department of Chemical Sciences, University of Padua, Via Marzolo 1, 35131, Padua, Italy 4. Department of Chemistry, Princeton University, Princeton, NJ, 08544, USA 5. CNR-SPIN and Dipartimento di Scienze Fisiche, Complesso Universitario di Monte S.Angelo, Via Cintia, 80126, Naples, Italy (literal)
Titolo
  • Evolution of nanostructures of anatase TiO2 thin films grown on (001) LaAlO3 (literal)
Abstract
  • Combining reflection high-energy electron diffraction, high-resolution transmission electron microscopy, and high-angle annular dark field scanning transmission electron microscopy we unveil the existence of a peculiar transition from a three-dimensional to a two-dimensional growth mode in anatase TiO2/LaAlO3 heterostructures. Such a growth dynamics is accompanied by Al interdiffusion from substrate to the growing film up to a critical thickness of 20 nm. With the extra support of ab initio calculations, we show that the crossover between the two growth modes corresponds to the formation of two distinct regions characterized by (103)- and (101)-oriented crystallographic shear superstructures, occurring in the upmost film region and in proximity of the film/substrate interface, respectively. © 2013 Springer Science+Business Media Dordrecht. (literal)
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