Journal
SURFACE SCIENCE
Volume 606, Issue 15-16, Pages 1215-1220Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.susc.2012.03.023
Keywords
Silicon; Cobalt; Nitride; Photoemission; Temperature; Co 3p
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The thermal stability of the Co/beta-Si3N4/Si(111) interface has been studied by high-resolution photoemission spectroscopy in a temperature range extending from room temperature to 650 degrees C. It is demonstrated the ability of a very thin crystalline buffer layer of silicon nitride to prevent the interfacial reaction between cobalt and silicon at room temperature. The behaviour of the interface at higher temperature shows the formation of cobalt silicides already at 300 degrees C. Moreover, the presence of new components in the decomposition of the photoemission spectra is discussed in the light of the existing literature. (C) 2012 Elsevier B.v. All rights reserved.
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