Abstract
Bifunctional magnetic-luminescent Fe3O4@Gd2O3:Eu3+ nanoparticles with core–shell structures have been successfully fabricated using a simple, green, and efficient hydrothermal method. These materials were characterized by means of X-ray diffraction (XRD), transmission electron microscopy (TEM), photoluminescence (PL) spectra, and a superconducting quantum interference device (SQUID) magnetometer. The results showed that the spinel of the Fe3O4 cores was uniformly coated with Gd2O3:Eu3+ layers. The inner Fe3O4 cores and the outer Gd2O3:Eu3+ layers yielded composites that combine magnetic-responsive and luminescent properties, thus, nanoparticles of the composite may find potential applications in drug targeting, bioseparation, and diagnostic analysis.
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