Fe3O4@PSC nanoparticle clusters with enhanced magnetic properties prepared by alternating-current magnetic field assisted co-precipitation

Field-assisted synthesis has been one of the common strategies of nanoparticles preparation with enhanced properties. However, most researches focused on exploring the effects of monofunctional static field on the structure and properties of synthetic nanomaterials, few researchers have applied fields with period variation as assistance. Combining medium alternating current magnetic field with most widely used method traditional chemical co-precipitation held potential in preparation high quality Fe 3 O 4 nanoparticle. In this study, Fe 3 O 4 nanoparticle clusters were prepared in alternating-current magnetic field (ACMF) by co-precipitation principle, structural and magnetic properties were also characterized. Results demonstrated that Fe 3 O 4 nanoparticle clusters prepared by co-precipitation heated in ACMF indicated a better heat production under ACMF, comparing with Fe 3 O 4 nanoparticle clusters with similar size and distribution prepared by classic co-precipitation. It might be due to the magnetic effects induced by ACMF that Fe 3 O 4 nanoparticles tend to grow along the magnetization direction. This technology might hold promise in preparation high performance magnetic nanomaterial in the future.