Synthesis and Characterization of Hyper‐Branched Nanoparticles with Magnetic and Plasmonic Properties

Abstract Hybrid nanoparticles, composed of an iron oxide magnetic core embedded with gold fractal‐grown hyper branches, have been synthesized by a seed‐mediated growth approach. Magnetic and plasmonic properties described respectively through ferromagnetic resonance (FMR) extinction spectra. According to the hydroxylamine amount, used as surface catalysed reducing agent, number branches intensity fractal finely tuned were observed TEM microscopy. The allowed their motion control via external field. these hyper‐branched hybrid nanoparticles recorded similar those shown branched but it is interesting note that they showed encouraging photothermal response.