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EPR of a defect in CVD diamond involving both silicon and hydrogen that shows preferential alignment

Plasma grown diamonds exhibit characteristics related to their impurities. This collaboration between modelling in Newcastle, spectroscopy in Warwick, and diamond synthesis at Element 6 (De Beers), provided key information regarding silicon and hydrogen containing defects. This critical contribution from theory is the quantitatively accurate determination of electron-nuclear interactions, allowing for an unambiguous assignment of structures present in the diamond films. This is crucial in being able to distinguish the origins of particular diamonds, a matter of great interest to the diamond industry, hence our collaboration with De Beers and citations from other parties such as the GIA.