Z-contrast imaging and electron energy-loss spectroscopy analysis of chromium-doped diamond-like carbon films
نویسندگان
چکیده
Metal-doped diamond-like carbon films were produced for the purpose of an electrochemical nanoelectrode. In this study we use Z-contrast scanning transmission electron microscopy to directly observe metal cluster formation and distributions within the chromium-doped carbon films. At low doping ~;6 at. % Cr!, Cr is uniformly distributed within the C matrix; at high doping ~;12 at. % Cr!, Cr-rich clusters are formed. Analyzing electron energy loss spectroscopy Cr L2,3 white line ratios, we find that the Cr tends to be metallic-like when it is uniformly distributed in the C matrix and carbide-like in the Cr-rich clusters. The carbon is more diamond-like at low doping and more graphite/carbide-like at high doping according to the sp/sp electron percentage measurements. © 1999 American Institute of Physics. @S0003-6951~99!00844-X#
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