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Title: Top-surface characterization of a near-frictionless carbon film.

Abstract

A detailed study of the top surface ({approx}2 nm) of a near frictionless carbon film has revealed new information with respect to the sp{sup 3} fraction. Previous work on near frictionless carbon films made at Argonne had shown a large fraction of sp{sup 2}-hybridized carbon in the bulk of the film. However, in this study of the surface, the majority of the carbon was found to be sp{sup 3}. In addition we compared and contrasted the behavior of the films after mechanical abrasion and Ar{sup +} etching. The study also revealed that oxygen on untreated samples was rapidly reduced by etching or heating or mechanical abrasion; this finding was corroborated by an angle-resolved study, where different depths of the sample were probed. It was also found that the fraction of sp{sup 3} carbon decreased linearly with depth, falling in one film from {approx}90% sp{sup 3} to {approx}80% sp{sup 3} in the top 2 nm.

Authors:
; ; ; ; ; ; ; ;
Publication Date:
Research Org.:
Argonne National Lab. (ANL), Argonne, IL (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
935626
Report Number(s):
ANL/ET/JA-56617
TRN: US200816%%636
DOE Contract Number:  
DE-AC02-06CH11357
Resource Type:
Journal Article
Resource Relation:
Journal Name: Diamond Related Mater.; Journal Volume: 16; Journal Issue: 2 ; Feb. 2007
Country of Publication:
United States
Language:
ENGLISH
Subject:
36 MATERIALS SCIENCE; FILMS; SURFACE PROPERTIES; ABRASION; CARBON; FRICTION; ETCHING; HEATING

Citation Formats

Johnson, J. A., Holland, D., Woodford, J. B., Zinovev, A., Gee, I. A., Eryilmaz, O. L., Erdemir, A., Univ. of Warwick, and Sheffield Hallam Univ. Top-surface characterization of a near-frictionless carbon film.. United States: N. p., 2007. Web. doi:10.1016/j.diamond.2006.05.005.
Johnson, J. A., Holland, D., Woodford, J. B., Zinovev, A., Gee, I. A., Eryilmaz, O. L., Erdemir, A., Univ. of Warwick, & Sheffield Hallam Univ. Top-surface characterization of a near-frictionless carbon film.. United States. doi:10.1016/j.diamond.2006.05.005.
Johnson, J. A., Holland, D., Woodford, J. B., Zinovev, A., Gee, I. A., Eryilmaz, O. L., Erdemir, A., Univ. of Warwick, and Sheffield Hallam Univ. Thu . "Top-surface characterization of a near-frictionless carbon film.". United States. doi:10.1016/j.diamond.2006.05.005.
@article{osti_935626,
title = {Top-surface characterization of a near-frictionless carbon film.},
author = {Johnson, J. A. and Holland, D. and Woodford, J. B. and Zinovev, A. and Gee, I. A. and Eryilmaz, O. L. and Erdemir, A. and Univ. of Warwick and Sheffield Hallam Univ.},
abstractNote = {A detailed study of the top surface ({approx}2 nm) of a near frictionless carbon film has revealed new information with respect to the sp{sup 3} fraction. Previous work on near frictionless carbon films made at Argonne had shown a large fraction of sp{sup 2}-hybridized carbon in the bulk of the film. However, in this study of the surface, the majority of the carbon was found to be sp{sup 3}. In addition we compared and contrasted the behavior of the films after mechanical abrasion and Ar{sup +} etching. The study also revealed that oxygen on untreated samples was rapidly reduced by etching or heating or mechanical abrasion; this finding was corroborated by an angle-resolved study, where different depths of the sample were probed. It was also found that the fraction of sp{sup 3} carbon decreased linearly with depth, falling in one film from {approx}90% sp{sup 3} to {approx}80% sp{sup 3} in the top 2 nm.},
doi = {10.1016/j.diamond.2006.05.005},
journal = {Diamond Related Mater.},
number = 2 ; Feb. 2007,
volume = 16,
place = {United States},
year = {Thu Feb 01 00:00:00 EST 2007},
month = {Thu Feb 01 00:00:00 EST 2007}
}