Fabrication and Characterization of SPION/CaMoO4:Er~(3+), Yb~(3+) Composites by Cyclic Microwave-Assisted Metathetic Method

摘要

Er~(3+)/Yb~(3+) co-doped CaMoO4 (CaMcO4:Er~(3+)/Yb~(3+)) composites with superparamagnetic iron oxide nanoparticles (SPIONs) incorporated were successfully synthesized by a cyclic microwave-assisted metathetic method, followed by heat-treatment. The microstructure exhibited well-defined and homogeneous morphology with CaMoO4:Er~(3+)/Yb~(3+) particle sizes of 2-3 um and Fe3O4 particle sizes of 0.1-0.5 um. The Fe3O4 particles were self-preferentially crystallized and immobilized on the surface of CaMoO4:Er~(3+)/Yb~(3+) particles. The synthesized SPION/BaMoO4:Er~(3+), Yb~(3+) composites were characterized by X-ray diffraction, scanning electron microscopy and energy-dispersive X-ray spectroscopy. Optical properties were examined using photohiminescence emission data and Raman spectroscopy.