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Table 1 Parameters of EPR signals observed in the initial and annealed SiO2:C samples at 292 K

From: Infrared, Raman and Magnetic Resonance Spectroscopic Study of SiO2:C Nanopowders

T ann Paramagnetic center g-factor N, spins/cm3
Initial SiDB 2.0055(3) ~1.5 · 1017
CRD 2.0033(3) ~2.5 · 1017
500 °C O-centered CRD 2.0042(3) ~3.3 · 1018
700 °C C-centered CRD with a nearby O heteroatom 2.0035(3) ~4.1 · 1022
800 °C 2.0035(3) ~4.2 · 1021