
Fig. 1
SEM images of synthesized nanoparticles: (a) iron, (b) iron oxide, and TEM images: (c) iron, (d) iron oxide.

Fig. 2
FT-IR spectra of synthesized nanoparticles: (a) goethite and (b) hematite.

Fig. 3
XRD patterns of synthesized nanoparticles: (a) iron and (b) iron oxide.

Fig. 4
Magnetization curves of synthesized nanoparticles: (a) iron and (b) iron oxide.