Hierarchical design of FeCo-based microchains for enhanced microwave absorption in C band

Microwave absorbing materials (MAMs) has been intensively investigated in order to meet the requirement of electromagnetic radiation control, especially in S and C band. In this work, FeCo-based magnetic MAMs are hydrothermally synthesized via a magnetic-field-induced process. The composition and morphology of the MAMs are capable of being adjusted simultaneously by the atomic ratio of Fe2+ to Co2+ in the precursor. The hierarchical magnetic microchain, which has a core-shell structure of two-dimensional FexCo1−xOOH nanosheets anchored vertically on the surface of a one-dimensional (1D) Co microchain, shows significantly enhanced microwave absorption in C band, resulting in a reflection loss (RL) of lower than…