ACS Applied Materials & Interfaces · 2018 · 165 citations · 56 references
Natural SciencesMaterials EngineeringMaterials ScienceElectromagneticsMagnetic MaterialsNanomaterialsComposite MaterialsMagnetic NanomaterialsMagnetic OxidesMetal Oxide NanomaterialsMicrowave MaterialsNanocompositesAbsorption EfficiencyBandwidth EnhancementCore-shell Magnetic NanostructuresCore-shell Nanostructure SynthesisFrequency-dependent AbsorptionMagnetic Core MaterialsMagnetic CoresMicrowave Absorbing Materials
@C yolk-shell structure shows excellent EMW absorption performance, the strongest reflection loss (RL) is up to -35.3 dB at 9.1 GHz with the matching thickness of 2.0 mm, and the effective bandwidth (RL < -10 dB) can reach 8.4 GHz (9.6-18 GHz) with a thickness of only 1.5 mm. It is revealed that the excellent performances stem from the unique yolk-shell structure as well as the complementarities and synergies between the dielectric loss and the magnetic loss. By rational designing, the magnetic metal alloy@carbon yolk-shell structures will be convinced to have the potential as novel high-efficiency EMW absorption materials with lightweight, low thickness, wide absorption frequency, high stability, and strong absorption characteristics.
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