Synthesis of Co–Cu–Zn doped Fe3O4 nanoparticles with tunable morphology and magnetic properties

Abstract: Co–Cu–Zn doped Fe3O4 nanoparticles can be successfully synthesized using a simple method. The particles in the size range 20−400nm with different regular shapes i.e. sphere-like, regular hexane and tetrahedron are controllably achieved by changing the metal ion concentration. Compared to pure Fe3O4 without dopants, Co–Cu–Zn doped Fe3O4 nanoparticles exhibit better microwave absorbing properties at 2−18GHz. Among three Co–Cu–Zn doped Fe3O4 nanoparticles with different morphologies, tetrahedral Co–Cu–Zn doped Fe3O4 nanoparticles represent a better dielectric loss in high frequency range. This work is believed the first known report of Co–Cu–Zn doped Fe3O4 nanoparticles with tunable morphology and magnetic properties through the hydrothermal process without using any organic solvents, organic metal salts or surfactants. [Copyright &y& Elsevier]