Fe-Fe2O3 core - shell nanowires and nanonecklaces were obtained simply through controlling the reduction rate of Fe3+ ions by sodium borohydride in aqueous solution at ambient atmosphere. The resulting materials were characterized by X-ray powder diffraction, scanning electron microscopy images and energy dispersive X-ray spectrum, transmission electron microscopy, elemental mapping, X-ray photoemission spectroscopy, and magnetization measurements. A possible formation mechanism was proposed on the basis of characterization results. It was inte...
