Preparation and Optical Properties of SPION/SrMoO4:Er3+, Yb3+ Composites via Cyclic Microwave-Assisted Metathetic Route

Abstract

Er³⁺/Yb³⁺ co-doped SrMoO₄ (SrMoO₄: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 SrMoO₄:Er³⁺/Yb³⁺ particle sizes of 1-2 μm and Fe₃O₄ particle sizes of 0.1-0.5 μm. The Fe₃O₄ particles were self-preferentially crystallized and immobilized on the surface of SrMoO₄:Er³⁺/Yb³⁺ particles. The synthesized SPIONs/SrMoO₄: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.