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Strain and Impurity Content of Synthetic Diamond Crystals

Published online by Cambridge University Press:  22 February 2011

T. L. Mccormick ,
W. E. Jackson  and
R.J. Nemanich
T. L. Mccormick
Affiliation:
North Carolina State University, Department of Physics, Raleigh, North Carolina, USA
W. E. Jackson
Affiliation:
GE Superabrasives, 6325 Huntley Road, P.O. Box 568, Worthington, Ohio, USA
R.J. Nemanich
Affiliation:
North Carolina State University, Department of Physics, Raleigh, North Carolina, USA
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Abstract

Samples of diamond crystals produced under various high pressure, high temperature conditions were studied using both micro photoluminescence and Raman spectroscopy. The 0.3 - 0.6 mm sized samples exhibited various levels of inclusion content, impurity content and strain. Photoluminescence studies revealed the presence of nitrogen in three forms. The 1.945 eV, 2.15 eV and 2.46 eV zero phonon lines and their associated sidebands were detected. The ratios between forms of impurities and their integrated intensities varied between samples. Variations in the distribution of the nitrogen forms were seen between regions of high and low strain birefringence patterns.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 349: Symposium T – Novel Forms of Carbon II , 1994 , 445
Copyright
Copyright © Materials Research Society 1994

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References

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