Nano Research

Article Title

Synthesis of high magnetic moment CoFe nanoparticles via interfacial diffusion in core/shell structured Co/Fe nanoparticles


CoFe nanoparticles, core/shell nanoparticles, magnetic nanoparticles, chemical synthesis


We report the synthesis of high magnetic moment CoFe nanoparticles via the diffusion of Co and Fe in core/ shell structured Co/Fe nanoparticles. In an organic solution, Co nanoparticles were coated with a layer of Fe to form a Co/Fe core/shell structure. Further raising the solution temperature led to inter-diffusion of Co and Fe and formation of CoFe alloy nanoparticles. These nanoparticles have high saturation magnetization of up to 192 emu/g CoFe and can be further stabilized by thermal annealing at 600 °C.

Graphical Abstract


Tsinghua University Press