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Study of Chromium-Doped Diamond-Like Carbon by Z-Contrast Imaging and Electron Energy Loss Spectroscopy

Published online by Cambridge University Press:  10 February 2011

X. Fan ,
E. C. Dickey  and
S. J. Pennycook
X. Fan
Affiliation:
Department of Chemical and Materials Engineering, University of Kentucky, Lexington, Kentucky, KY, 40506 Solid State Division, Oak Ridge National Laboratory, Oak Ridge, TN, 37831
E. C. Dickey
Affiliation:
Department of Chemical and Materials Engineering, University of Kentucky, Lexington, Kentucky, KY, 40506
S. J. Pennycook
Affiliation:
Solid State Division, Oak Ridge National Laboratory, Oak Ridge, TN, 37831
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Abstract

Metal-doped diamond-like carbon films were produced for the purpose of an electrochemical nano-electrode. 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 (∼6at%Cr), Cr is uniformly distributed; at high doping (∼12at%Cr), Cr-rich clusters are formed. Using electron energy loss spectroscopy, we find that the Cr clusters tend to be metallic-like at low doping levels and carbide-like at high doping levels according to the Cr L2.3 white line ratios. The carbon is more diamond-like at low doping and more graphite/carbide like at high doping according to the sp2/sp3 electron percentage measurements.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 593: Symposium U – Amorphous & Nanostructured Carbon , 1999 , 329
Copyright
Copyright © Materials Research Society 2000

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