Fabrication and Characterization of SPION/CaMoO4:Er3+, Yb3+ Composites by Cyclic Microwave-Assisted Metathetic Method

Abstract

Er³⁺/Yb³⁺ co-doped CaMoO₄ (CaMoO₄:Er³⁺/Yb³⁺) 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:Er³⁺/Yb³⁺ particle sizes of 2-3 μm and Fe₃O₄ particle sizes of 0.1-0.5 μm. The Fe₃O₄ particles were self-preferentially crystallized and immobilized on the surface of CaMoO₄:Er³⁺/Yb³⁺ particles. The synthesized SPION/BaMoO₄:Er³⁺, Yb³⁺ composites were characterized by X-ray diffraction, scanning electron microscopy and energy-dispersive X-ray spectroscopy. Optical properties were examined using photoluminescence emission data and Raman spectroscopy.