In the present work, we designed a facile approach for
fabricating bifunctional magnetic-optical Fe3O4@ZnS
core-shell microspheres without using other components
as a transition layer. The resulting microspheres possess
the advantages of uniform sizes, robust magnetization,
and strong fluorescence. Furthermore, the current facile
synthetic procedure may be extended to the fabrication of
other bi- or multifunctional composites by using different
cation or anion surfactants.