Abstract
Nano-crystalline particles of CoFe2O4 with a spinel structure were prepared by hydrothermal method. The synthesized nanoparticles were characterized by XRD, SEM, and AFM techniques. XRD analysis revealed a high degree of crystallinity and also indicated that the diffraction peaks correspond to the cubic spinel structure. The morphology of the obtained powders was studied by SEM technique; the obtained SEM images evidenced the presence of spherical nanometric scale ferrite particles. The AFM data for CoFe2O4 showed an uniform surface; the average grain size estimated from AFM data was ~ 40 nm. The CoFe2O4 nanopowder obtained via this simple hydrothermal method and without further calcination,
presented a ferromagnetic behavior, with a high saturation magnetization (Ms) and coercivity field (Hc)..
Keywords
Hydrothermal synthesis, Cobalt ferrite, Nanoparticles, Magnetic materials.
Citation
P. VLAZAN, M. VASILE, Synthesis and characterization CoFe2O4 nanoparticles prepared by the hydrothermal method, Optoelectronics and Advanced Materials - Rapid Communications, 4, 9, September 2010, pp.1307-1309 (2010).
Submitted at: July 30, 2010
Accepted at: Sept. 15, 2010