Current problems in diamond: towards a quantitative understanding

This paper discusses three major areas of current work on the properties of point defects in diamond: attempting to introduce a shallow donor centre, studying the rôle of transition metals, and achieving a quantitative understanding of radiation effects. Recent work on the first two topics is survey...

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Bibliographic Details
Published in:Physica. B, Condensed matter Condensed matter, 1999-12, Vol.273-274, p.15-23
Main Author: Davies, Gordon
Format: Article
Language:English
Subjects:
Diamond
Epr
Optical properties
Radiation damage
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Summary:This paper discusses three major areas of current work on the properties of point defects in diamond: attempting to introduce a shallow donor centre, studying the rôle of transition metals, and achieving a quantitative understanding of radiation effects. Recent work on the first two topics is surveyed briefly. Published and new data on the problem of radiation damage are discussed in terms of: measuring the concentrations of the vacancy-related and self-interstitial centres; isotope effects on the vacancy and interstitial centres, including the identification of the self-interstitial 1.859 eV line as a vibrational feature; the rate of production of damage, including the influence of the nitrogen impurity; and the radiation-induced reactions. Some of the problems arising from the lack of current information are highlighted.
ISSN:0921-4526
1873-2135
DOI:10.1016/S0921-4526(99)00398-1