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Reactions on the SiC(0001) root 3 x root 3 R30 degrees surface after Ti deposition and annealing
Linköping University, Department of Physics, Chemistry and Biology, Semiconductor Materials. Linköping University, The Institute of Technology.
Linköping University, Department of Physics, Chemistry and Biology, Semiconductor Materials. Linköping University, The Institute of Technology.
2011 (English)In: Physica status solidi. B, Basic research, ISSN 0370-1972, E-ISSN 1521-3951, Vol. 248, no 3, 667-673 p.Article in journal (Refereed) Published
Abstract [en]

The interactions of thin Ti layers deposited on the SiC(0001) root 3 x root 3 R30 degrees surface at room temperature and after annealing at temperatures from 450 to 1200 degrees C was investigated using photoemission and LEED. Chemically shifted components were revealed in the Si 2p spectrum and found to be more intense and pronounced than the shifted component in the C 1s spectrum after Ti deposition and annealing. The relative intensity of these shifted components were found to increase initially upon annealing at temperatures up to around 700 degrees C. At temperatures above 800 degrees C only the shifted component in the C 1s spectrum remained which indicate that only TiC then remains on the surface. At annealing temperatures of 600-700 degrees C formation of the ternary Ti(3)SiC(2) phase and an interface TiSi(x) layer is suggested from shifts and relative intensities observed for these components. That the formation and decomposition of the ternary phase occurs at a considerably lower temperature than earlier reported is attributed to the fact that we investigated the interaction of considerably thinner Ti layers with SiC substrates than in those earlier reported studies.

Place, publisher, year, edition, pages
John Wiley and Sons, Ltd , 2011. Vol. 248, no 3, 667-673 p.
Keyword [en]
annealing; carbides; SiC; silicides; Ti; surface reactions
National Category
Engineering and Technology
Identifiers
URN: urn:nbn:se:liu:diva-69927DOI: 10.1002/pssb.201046175ISI: 000288089900023OAI: oai:DiVA.org:liu-69927DiVA: diva2:433180
Available from: 2011-08-09 Created: 2011-08-08 Last updated: 2017-12-08

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Johansson, Leif IVirojanadara, Chariya

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