Eur. Phys. J. B 75, 151-155 (2010)
https://doi.org/10.1140/epjb/e2010-00076-7

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

Corresponding authors: esalas@icmm.csic.es - rjimenez@icmm.csic.es

Received: 30 July 2009
Revised: 26 November 2009
Published online: 2 March 2010

Abstract

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.