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Geometric structure and chemical composition of SrTiO3 surfaces heated under oxidizing and reducing conditions
Citation
Goemann, AA and Goemann, K and Beuermann, L and Frerichs, M and Borchardt, G and Kempter, V and Maus-Friedrichs, W, Geometric structure and chemical composition of SrTiO3 surfaces heated under oxidizing and reducing conditions, Surface Science, 507-510 pp. 447-452. ISSN 0039-6028 (2002) [Refereed Article]
DOI: doi:10.1016/S0039-6028(02)01284-0
Abstract
SrTiO3(1 0 0) single crystals with two different donor dopant concentrations were heated at 1300 °C in synthetic air and ultrahigh vacuum, respectively, and afterwards studied with atomic force microscopy to characterize the surface topology. Depth profiling measurements utilizing Auger electron spectroscopy yielded information on the chemical composition of secondary phases forming on top of the surface during annealing and of the surface region between them. Under oxidizing conditions a formation of SrOx insulating islands appearing on top of the surface is observed which strongly depends on crystal doping. Between these islands the formation of an additional phase is found. In contrast to the air heated surfaces no material enrichment and no SrOx formation is found under reducing conditions. © 2002 Elsevier Science B.V. All rights reserved.
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: | 70170 |
| Year Published: | 2002 |
| Web of Science® Times Cited: | 22 |
| Deposited By: | Central Science Laboratory |
| Deposited On: | 2011-06-06 |
| Last Modified: | 2011-08-02 |
| Downloads: | 0 |
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