Synthesis and properties of magnetic and luminescent Fe3O4/SiO2/YVO4:Eu3+ nanocomposites

In this study, the hydrothermal synthesized Fe3O4 nanoparticles are encapsulated with SiO2 via the Stöber method and further functionalized by the deposition of YVO4:Eu3+ phosphors, realizing a hybrid material with magnetic and luminescent properties. The bifunctional nanocomposites displayed a strong red emission and good ferrimagnetic behavior at room temperature. The high magnetization values make the nanocomposites quickly respond to the external magnetic field. The results also indicate that the nanocomposites may have potential applications for optical imaging or drug delivery. Moreover, we discussed the effects of the magnetic field on the luminescence intensity.

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