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Diamond Growth in an Oxy-Acetylene Flame by an Alternating Gas Ratio Technique

Published online by Cambridge University Press:  25 February 2011

F. R. Sivazlian ,
J. A. von Windheim  and
J.T. Glass
F. R. Sivazlian
Affiliation:
Department of Materials Science and Engineering, North Carolina State University, Raleigh, NC. 27695–7919
J. A. von Windheim
Affiliation:
Department of Materials Science and Engineering, North Carolina State University, Raleigh, NC. 27695–7919
J.T. Glass
Affiliation:
Department of Materials Science and Engineering, North Carolina State University, Raleigh, NC. 27695–7919
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Abstract

Diamond films were grown using a computer controlled oxy-acetylene torch that allowed precise programming of O2 and C2H2 gas profiles. This enabled more accurate control of the diamond growth chemistry. With this torch, systematic and complex variations in gas chemistry were applied during growth and the resulting film morphology and film quality was investigated. Plan view scanning electron microscopy (SEM) revealed predominately (111) faceting as a result of a sawtooth variation in the O2:C2H2 gas ratio from 0.97 to 1.00. Raman spectroscopy indicated mostly sp3 bonding, with little non-diamond component present. Furthermore, crosssectional SEM showed small grains during normal growth (O2:C2H2 = 0.97), whereas grain size increased significantly after onset of a sawtooth variation in the gas ratio.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 270: Symposium M – Novel Forms of Carbon , 1992 , 329
Copyright
Copyright © Materials Research Society 1992

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References

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