Synthesis and characterization of Fe2O3/BaFe12O19 nanorods and investigation of their magnetic properties

In this paper Fe2O3/BaFe12O19 nanorods were synthesized by a simple low-cost hydrothermal process with large scale production capability. Morphologic characteristics of nanorods such as length, diameter and aspect ratio were controllable. EDTA was used in the synthesis process as the growth control agent. In this investigation the effects of different parameters such as temperature (115, 150 and 180 °C), time (5, 10, 40 h), growth controlling agent (EDTA, PEG400, PEG6000, CA) and basic agent (NaOH and NH3) were also studied. In different conditions different morphologies like spheres with a diameter of 50-100 nm and nanorods with diameters of 50-400 nm and lengths of 1-10 μm were synthesized. Morphological characteristics of the samples were studied by scanning electron microscope (SEM) and magnetic properties were measured by alternative gradient force magnetometer (AGFM). The nanorods of this research could be used for heavy metal ions removal from waste water, catalysts, solar cells and microwave absorbing materials.