Key points are not available for this paper at this time.
Pulsed, Fourier-transform, and continuous-wave electron paramagnetic resonance methods are used to study the g=2. 0319 EPR signal in synthetic diamond crystals. This signal is from Ni which is found to be located at a substitutional site in the diamond lattice without detectable nearby charge compensation. The effective spin state of S= (3/2 is determined from Fourier-transform nutational EPR spectroscopy. It is proposed that the center is a Ni^- ion with electronic configuration 3d^7.
Isoya et al. (Thu,) studied this question.