Surface Morphology Engineering GQDs-decorated Metal-oxide Magnetic Composites for Radar Absorbing

Abstract

Nowadays, with the expanded radar (Radio Detection and Ranging) systems, the investigation of various materials with the capability to reduce or block reflected electromagnetic radiation has developed sharply. In this study, graphene quantum dots-decorated metal-oxide magnetic composites were fabricated as electromagnetic absorber materials because of their light weight, and good electric and magnetic properties. Furthermore, to investigate morphology engineering, a hydrothermal route was applied to fabricate nanostructures. Nanostructures were characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM), Fourier transform infrared (FT-IR) spectroscopy, and elemental mapping (EDS-mapping). Also, the magnetic moment and electromagnetic interference shielding were tested by Vibrating-sample magnetometer (VSM) and reflection loss (RL), respectively