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Table 1 Calculations of Raman shifts and grain size estimations for the C–SiO2, C–ZnO and C–NiO samples

From: FTIR and Raman Spectroscopy of Carbon Nanoparticles in SiO2, ZnO and NiO Matrices

Sample ωD(cm−1) ωG(cm−1) I D I G ωΔD(cm−1) ωΔG(cm−1) I D/I G L grain(nm)
Carbon 1,350 1,580       
C–SiO2 1,384.9 1,603.64 29,144.7 37,241.6 34.9 23.64 0.78,258 56.2
C–ZnO 1,362.6 1,594.3 2,207.96 2,923.4 12.6 14.3 0.75527 58.3
C–NiO 1,358.9 1,594.3 1,435.87 2,009.8 8.9 14.3 0.71443 61.6