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Growth and structural properties of Mg:C thin films prepared by magnetron sputtering

We investigate the growth and structure properties of Mg:C thin films. The films are prepared using a dc magnetron sputtering discharge where the electrical resistance over the films is monitored during growth in-situ with a four point probe setup. The structural properties of the films are investig...

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Bibliographic Details
Published in:Thin solid films 2010-05, Vol.518 (15), p.4225-4230
Main Authors: Ingason, A.S., Eriksson, A.K., Lewin, E., Jensen, J., Olafsson, S.
Format: Article
Language:English
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Summary:We investigate the growth and structure properties of Mg:C thin films. The films are prepared using a dc magnetron sputtering discharge where the electrical resistance over the films is monitored during growth in-situ with a four point probe setup. The structural properties of the films are investigated using X-ray diffraction measurements and the elemental composition and binding in the films is determined using elastic recoil detection analysis and X-ray photoelectron spectroscopy. The results show that during co-sputtering the carbon flux influences the initial stages of the film growth. The films are made of polycrystalline magnesium grains embedded in a carbon network, the size of which depends on the carbon content, but amorphous phases cannot be excluded. The XPS measurements show the presence of carbidic carbon whereas X-ray measurements find no Mg:C phases. The overall stability of the films is found to depend on the carbon content, where stable films capped with a 14 nm Pd layer cannot be obtained with carbon content above 18%.
ISSN:0040-6090
1879-2731
1879-2731
DOI:10.1016/j.tsf.2009.12.082