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Table 2 Spectral characteristics of the Sh-II-1 sample before and after annealing

From: Local structure and paramagnetic properties of the nanostructured carbonaceous material shungite

n / n ν D (cm −1 ) Г D (cm −1 ) ν G (cm −1 ) Г G (cm −1 ) I D / I G L a (nm) ν D (cm −1 )
Initial 1,355.8 75.7 1,583.4 59.2 1.47 9.3 1,612.8
Annealed 1,357.0 49.0 1,578.3 34.1 1.09 12.5 1,614.8