Concentration-dependent magnetic hyperthermic response of manganese ferrite-loaded ultrasmall graphene oxide nanocomposites

Water soluble and biocompatible ∼18 nm manganese-doped ferrite (MnxFe1−x)Fe2O4 decorated ultrasmall graphene oxide (GO) nanocomposites were synthesized. Ultrasmall nanocomposites were fabricated with a hydrodynamic size of 50.6 ± 0.3 nm, approximately ∼80 nm lateral dimension and ∼20 nm thickness (from AFM analysis), indicating a sheet-like structure with only a few nanoparticles attached. The concentration-dependent magnetic hyperthermic response of such nanocomposites under an alternating magnetic field (AMF) and very dilute conditions (