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Nanostructures on La-doped SrTiO3 surfaces


Goemann, AA and Goemann, K and Beuermann, L and Kempter, V and Borchardt, G and Maus-Friedrichs, W, Nanostructures on La-doped SrTiO3 surfaces, Analytical and Bioanalytical Chemistry, 375, (7) pp. 924-928. ISSN 1618-2642 (2003) [Refereed Article]

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Copyright 2003 Springer

DOI: doi:10.1007/s00216-003-1807-3


SrTiO3(100) single crystals with high donor dopant concentrations (5 at% La) were annealed at 1000°C for up to 150 h in ultrahigh vacuum (UHV). By applying scanning tunneling microscopy (STM) nanostructures are observed on top of the surface with typical diameters of 20 nm and typical heights of 8 nm. To characterize their electronic structure and chemical composition, the surface was analyzed by metastable impact electron spectroscopy (MIES), ultraviolet photoelectron spectroscopy (UPS), scanning tunneling spectroscopy (STS), and depth profiling Auger electron spectroscopy (AES). Investigations of the stoichiometry suggest that the secondary phases consist of LaTiO3. We present a defect chemistry model which attempts to explain the observed effects. © Springer-Verlag 2003.

Item Details

Item Type:Refereed Article
Research Division:Physical Sciences
Research Group:Condensed matter physics
Research Field:Surface properties of condensed matter
Objective Division:Manufacturing
Objective Group:Ceramics, glass and industrial mineral products
Objective Field:Ceramics
UTAS Author:Goemann, AA (Dr Anissa Goemann)
UTAS Author:Goemann, K (Dr Karsten Goemann)
ID Code:70169
Year Published:2003
Web of Science® Times Cited:10
Deposited By:Central Science Laboratory
Deposited On:2011-06-06
Last Modified:2012-07-31

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