Synthesis and magnetic properties of core-shell Fe70Co30g dendritic nanostructures

Core-shell Fe70Co30g dendritic nanostructures were successfully synthesized via a simple transmetallic redox method at room temperature, employing a mixed Fe70Co30 nanoparticles, and AgNO3 solution. The Fe70Co30g nanostructures demonstrate a leaf like structure with different lengths (100-300 nm) and widths ( similar to 50 nm) connected to the main branch which is of several tens of Amm long. The Ag coating of thickness similar to 8 nm on Fe70Co30 enhances the plasmonic and antioxidation properties of Fe70Co30g core-shell nanostructure. The saturation magnetization (MS similar to 62 emu/g) and coercivity (HC similar to 144 Oe) at room temperature clearly suggest that the Fe70Co30g nanostructures is protected from the oxidation due to the Ag coating.