Magnetoplasmonic nanoparticles for photothermal therapy Following the urge to obtain new "smart" nanomaterials, the application of nanotechnology to medicine (nanomedicine) is developing towards new employments of great impact. This is the case of hyperthermia, where superparamagnetic and plasmonic nanoparticles are investigated as nanoheaters or nanotransducers, which can be activated remotely by radiations minimally harmful to physiological tissue and fluids. Furthermore, iron oxide - gold/silver nanocomposites offer the combination of the unique features of both gold/silver and iron oxide nanomaterials to enable applications in diagnostic and therapeutic environments. In this work, a detailed study of the aqueous synthesis of iron oxide - gold/silver nanocomposites is presented.