Journal
NANOSCALE
Volume 4, Issue 1, Pages 91-94Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/c1nr11015b
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Funding
- European Community [212348 NFFA]
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TiO2 anatase thin films grown by pulsed laser deposition are investigated by high resolution transmission electron microscopy and high angle annular dark field scanning transmission electron microscopy. The analyses provide evidence of a peculiar growth mode of anatase on LaAlO3 and SrTiO3 characterized by the formation of an epitaxial layer at the film/substrate interface, due to cationic diffusion from the substrate into the film region. Pure TiO2 anatase growth occurs in both specimens above a critical thickness of about 20 nm. The microstructural and chemical characterization of the samples is presented and discussed in the framework of oxide interface engineering.
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