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An “easy-to-handle” Fe3C powder constituted of nanoparticles is prepared in a simple, fast and relatively cheap way. The nanoparticles are crystalline, small (d ≈ 8 nm), and superparamagnetic. Despite the absence of any significant coating shell, these nanoparticles are stable against oxidation and can represent a perfect base for the generation of novel ferrofluids.
Giordano et al. (Mon,) studied this question.