Encapsulation of Co Nanoclusters in A-C:H

Films with various cobalt concentrations were grown by co- sputtering of graphite and cobalt targets with DC magnetron in Ar-H2 plasma. A set of diagnostics such as high resolution electron microscopy, X-ray absorption, infrared and Raman spectroscopy are presented to show the mechanism of cobalt-carbon interaction in hydrogenated amorphous carbon films modified with cobalt A strong amplification of absorption by the C-H bond deformation modes and appearance of some C-C bond stretching modes induced by cobalt are reported.