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Low Energy Threshold in the Growth of Cubic Boron Nitride Films by ECR Plasma Assisted Magnetron Sputtering

Published online by Cambridge University Press:  21 February 2011

C. A. Taylor II
Affiliation:
Harrison M. Randall Laboratory of Physics, University of Michigan, Ann Arbor, MI 48109–1120
S. Kidner
Affiliation:
Harrison M. Randall Laboratory of Physics, University of Michigan, Ann Arbor, MI 48109–1120
R. Clarke
Affiliation:
Harrison M. Randall Laboratory of Physics, University of Michigan, Ann Arbor, MI 48109–1120
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Abstract

We report the growth of cubic boron nitride (cBN) films by magnetron sputtering on Si (100) substrates. The films are grown in the presence of negative substrate bias voltages and a nitrogen plasma produced by an electron cyclotron resonance source. We find evidence for a sharp low-voltage threshold in the substrate bias (-105 V) beyond which the samples are predominantly cBN. The structural quality of the cBN films is optimized in a narrow range of voltages near this threshold. We discuss the important role of energetic ions in the formation of cBN in light of recent theoretical findings.

Type
Research Article
Copyright
Copyright © Materials Research Society 1994

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References

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