Brillouin light scattering characterization of the surface acoustic wave velocity in sp2 allotropes thin films
Instituto de Ciencia de Materiales de Madrid, Consejo Superior de Investigaciones Científicas, 28049, Cantoblanco, Madrid, Spain
Revised: 26 November 2009
Published online: 2 March 2010
Carbon thin films have been deposited by DC magnetron sputtering at different substrate temperatures ranging from 200 K to 400 K. The influence of the preparation substrate temperature on the elastic properties has been evidenced by means of the High Resolution Brillouin Spectroscopy. Thus, the surface acoustic wave (SAW) velocity evolution could be assessed for the different samples. The observed variation is analysed in terms of the relative population of sp2 allotropes phases forming the film.
© EDP Sciences, Società Italiana di Fisica, Springer-Verlag, 2010