Constructing flower-like core@shell structured CoFe@MoO2/MoS2 magnetic nanocomposites for strong wideband microwave absorption

Magnetic-dielectric nanocomposites with excellent synergetic effect were deemed as the ideal candidates for high-performance microwave absorbers (MAs). Herein, we adopted a simple hydrothermal route and hydrogenous reduction to synthesize magnetic-dielectric CoFe@MoO2/MoS2 flower-like multicomponent nanocomposites (MCNCs). By controlling the different reduction temperature and time, the content of component (i. e., CoFe, MoO2 and MoS2) can be easily tuned, which is conducive to adjust electromagnetic parameter and optimize magnetic loss. Results demonstrated that the CoFe@MoO2/MoS2 flower-like MCNCs could be easily regulated by simply changing the content of CoFe in favor of improved magnetic loss and optimized impedance matching. So, the prepared magnetic-dielectric CoFe@MoO2/MoS2 flower-like MCNCs presented the minimum reflection loss of -55.91 dB and the widest effective bandwidth of 7.24 GHz. The strategies for adjusting rich interfaces and optimized magnetic loss are very instructive for the development of high-performance MAs and devices.