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|Type:||Artigo de evento|
|Title:||Structural Characterization Of Tio2/tinxoy (δ-doping) Heterostructures On (1 1 0)tio2 Substrates|
Marco de Lucas M.C.
|Abstract:||TiO2/TiNxOy δ-doping structures were grown on the top of (110)TiO2 rutile substrates by low pressure metal-organic vapor phase epitaxy (LP-MOVPE) technique at 750°C. The samples were analyzed by high resolution transmission electron microscopy (HRTEM), electron energy loss spectroscopy (EELS) and X-ray diffraction techniques (rocking curves and φ-scans). The presence of satellites in the (110)TiO2 rocking curve revealed the epitaxial growth of 10 period δ-doping structures. The thickness of the TiO2 layers, 84nm, was deduced from the satellites period. HRTEM observations showed around 1.5nm thick δ-doping layers, where the presence of nitrogen was detected by EELS. The analysis of the Bragg surface diffraction peaks observed in the φ-scans points to an almost negligible strain in this sample which was confirmed by substrate curvature radius measurements. © 2003 Elsevier Science B.V. All rights reserved.|
|Appears in Collections:||Unicamp - Artigos e Outros Documentos|
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