Figure 2
From: Magnetic properties of N-doped graphene with high Curie temperature

Characterizations of N-doped graphene samples.
(a–c) SEM images of the pristine and N-doped graphene Sample 0, Sample 2 and Sample 3, respectively. (d) TEM image of Sample 0. (e) TEM image of Sample 2. (f) HRTEM of Sample 2. (g) XRD of the pristine and N-doped graphene samples. (h) Raman spectra of the pristine and N-doped graphene samples. (i) The intensity ratios of ID/IG and I2D/IG of the pristine and N-doped graphene in the Raman spectra.