Confined Diffusion Strategy for Customizing Magnetic Coupling Spaces to Enhance Low‐frequency Electromagnetic Wave Absorption
Fudan University · Shanghai Institute of Technology · +1 more institution
Abstract
Abstract The rational design of magnetic composites has great potential for electromagnetic (EM) absorption, particularly in the low‐frequency range of 2–8 GHz. However, the scalable synthesis of such magnetic absorbers with both high magnetic content and good dispersity remains challenging. In this study, a confined diffusion strategy is proposed to fabricate functional magnetic‐carbon hollow microspheres. Driven by the ferromagnetic enhanced Kirkendall diffusion effect, the in situ alloying of FeCo nanoparticles is tightly confined in carbon shells, effectively inhibiting magnetic agglomeration. Moreover, the core–shell FeCo–carbon nano‐units further assemble into dispersive microscale magnetic‐carbon Janus…
Citation impact
- FWCI
- 27.31
- Percentile
- 100%
- References
- 65
Authors
7Topics & keywords
- Materials science
- Reflection loss
- Kirkendall effect
- Absorption (acoustics)
- Inductive coupling
- Magnetic nanoparticles
- Microscale chemistry
- Dispersity