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A Grain Boundary Defect in Polycrystalline Films

Published online by Cambridge University Press:  10 February 2011

K. M. McNamara Rutledge ,
G. D. Watkins  and
X. Zhou
K. M. McNamara Rutledge
Affiliation:
Boston University, Boston, MA 02215
G. D. Watkins
Affiliation:
Lehigh University, Bethlehem, PA 12301
X. Zhou
Affiliation:
Lehigh University, Bethlehem, PA 12301
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Abstract

Our studies primarily concern an S=1/2 electron paramagnetic resonance (EPR) at g=2.0028 with a pair of weaker partially resolved satellites that has been observed in polycrystalline diamond grown by chemical vapor deposition (CVD). These satellites can be shown to result from the forbidden Δm=±l nuclear spin flips of hydrogen during the EPR ΔM∼ 2Å away from the unpaired electron spin. It is suggested that hydrogen enters a vacancy-like stretched bond at a grain boundary, allowing the carbons to relax backward, one bonding to the hydrogen, the other with an unpaired electron in its dangling bond.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 416: Symposium DD – Diamond for Electronic Applications , 1995 , 255
Copyright
Copyright © Materials Research Society 1996

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References

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