Interface-induced dual-pinning mechanism enhances low-frequency electromagnetic wave loss
Beihang University · Beijing University of Chemical Technology
Abstract
Abstract Improving the absorption of electromagnetic waves at low-frequency bands (2-8 GHz) is crucial for the increasing electromagnetic (EM) pollution brought about by the innovation of the fifth generation (5G) communication technology. However, the poor impedance matching and intrinsic attenuation of material in low-frequency bands hinders the development of low-frequency electromagnetic wave absorbing (EMWA) materials. Here we propose an interface-induced dual-pinning mechanism and establish a magnetoelectric bias interface by constructing bilayer core-shell structures of NiFe 2 O 4 (NFO)@BiFeO 3 (BFO)@polypyrrole (PPy). Such heterogeneous interface could induce distinct magnetic pinning of the magnetic…
Citation impact
- FWCI
- 28.55
- Percentile
- 100%
- References
- 56
Authors
8Topics & keywords
- Materials science
- Attenuation
- Electromagnetic radiation
- Impedance matching
- Low frequency
- Electrical impedance
- Optoelectronics
- Dipole