Full width at half maximum intensity of G band in first order Raman spectrum of carbon material as a parameter for graphitization-a study with pyrolytic carbons

In the field of Raman spectroscopy, it is known that the full width at half maximum intensity of the G band (G-FWHM) in the first order Raman spectrum for carbon material is a parameter for graphitization, though it is qualitative evidence. In the present paper, this fact has been studied quantitatively using pyrolytic carbons having various values of interlayer spacing doce, 0.3367 nm≤d002≤0.3421nm. The crystal structures of the pyrolytic carbon samples with 0.3367nm≤d002≤0.3374nm are graphitic structures, while the samples with 0.3374nm