OPTICAL-DETECTION OF MAGNETIC-RESONANCE OF NITROGEN AND NICKEL IN HIGH-PRESSURE SYNTHETIC DIAMOND

Diamonds grown by the temperature-gradient method using a nickel catalyst exhibit a luminescence spectrum that is dominated by a broad band with sharp lines around 2.56 eV. We report optical detection of magnetic resonance of substitutional N0 and substitutional Ni- in this luminescence system. The results indicate that the luminescence arises from two overlapping bands, one resulting from distant deep nitrogen donor to shallow acceptor recombination, the other a localized transition involving the nickel that accounts for the sharp structure. © 1995 The American Physical Society.