Photoluminescence and Induction Heating Studies of Fe3O4@CaWO4:5Dy3+ Magnetic-Luminescent Nanocomposite for Hyperthermia Application

Abstract

A 5 at.% Dy3+ ions doped CaWO4 nanoparticles (CaWO4:5Dy) were synthesized by hydrothermal method using polyethylene glycol (PEG) as solvent medium and capping agent. The phase purity and crystalline properties of the prepared nanoparticles were obtained from the XRD analysis. TEM images revealed that the CaWO4:Dy3+ have particles of size approximately in the range 30-50 nm. The prepared magnetic luminescence nanocomposite exhibits a high saturation magnetization. The prepared nanocomposite can achieve hyperthermia temperature (42 ºC) in a short period by applying the alternating magnetic field, externally. The nanocomposite also shows photoluminescence properties. Nanomaterials described in this work can be used for optical imaging as well as hyperthermia applications.