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One-pot synthesis of FePd and FePd/Fe2O3 (core/shell) nanoparticles via interdiffusion is reported for the first time. It was found that the size of FePd particles and Fe2O3 shell thickness could be controlled by the ligand and iron precursor amounts, respectively. These FePd/Fe2O3 particles can be reductively annealed at 500 °C to produce exchanged coupled L10-FePd/α-Fe magnetic nanocomposites. The effect of the phosphine ligand on magnetic characteristics of synthesized particles and final annealed nanocomposite is discussed. Finally, it was found that the magnetic properties of the final L10-FePd/α-Fe nanocomposites could be tuned by Fe2O3 shell thickness and can reach a coercivity (Hc) of up to 2.4 kOe and a saturation magnetization (Ms) of 141 emu/g.
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Kirkeminde et al. (2014) studied this question.
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