Abstract
We report here the synthesis of γ-Fe2O3 nanoparticles in the presence of the water vapor, by thermally decomposing ferrocene at ∼1100 °C in a vacuum of 10−2 Torr. The γ-Fe2O3 nanoparticles synthesized, interestingly, self-organized into straight lines of several ten micrometers long and several ten nanometers wide, on planar substrates. This could bring arrays of aligned, nanometer-wide lines of γ-Fe2O3 nanoparticles in areas ∼ several hundred micrometers in diameter, thus providing an alternative idea to fabricate patterns of iron particles on the nanometer scale, i.e., by simply deoxidizing the γ-Fe2O3 nanoparticles. The structure and the magnetic properties of the γ-Fe2O3 particles were also investigated.
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