Structural, thermal, dielectric and magnetic properties of NiFe2O4 nanoleaf

The leaf-like NiFe2O4 nanostructure formed from nanoparticles has been successfully prepared on polymer assisted sol-gel method. Here ethylene glycol (EG) is used as a gelling agent as well as solvent and PVA as a capping agent. A sequence of control experiments confirms that the polymer concentration with NiFe2O4 has direct influence on the morphology of the products. Characterization of the synthesized nanoparticles and nanoleaf are carried out using powder XRD, FT-IR, TGA, HR-SEM, TEM, HR-TEM, dielectric measurements tangent, microRaman and VSM. On the basis of these experimental results, potential influence mechanisms in the growth processes are proposed. (C) 2012 Elsevier B.V. All rights reserved.