Abstract
Abstract Photoluminescence, optical absorption and electron spin resonance results are reported for diamond films homoepitaxially grown by chemical vapor deposition on 〈100〉-oriented natural IIa diamond. Measured dependencies of the corresponding signals on the growth temperature in the range 950–2100°C suggest that, while most of nitrogen is present in our films as single atoms, a small part (approx. 10 −3 of all nitrogen) could be incorporated as N 2 molecules.
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