Templated fabrication of NiFe2O4 nanorods: Characterization, magnetic and electrochemical properties

NiFe2O4 nanorods were successfully synthesized by the thermal treatment of the rodlike precursor that fabricated by a coprecipitation of Ni2+, Fe2+, and C2O42- ions in a microemulsion solution. The morphology evolution that occurred during calcinations of the precursor nanorods was investigated with TEM (transmission electron microscopy) and SAED (selected area electron diffraction). The magnetization at 15 kOe increases with increasing particle size. Thus-prepared NiFe2O4 nanorods with small subunits exhibited higher discharge than that of the sample with bigger building blocks. (c) 2008 Elsevier Masson SAS. All rights reserved.