Applied Physics Letters · 2007 · 23 citations · 12 references
Natural SciencesMaterials EngineeringMaterials ScienceElectromagneticsMagnetic MaterialsNanomaterialsMagnetic NanomaterialsMicrowave MaterialsNanocompositesShielding DesignShielding MaterialsComposite Shield MaterialsComposite Shielding MaterialsConductivityElectromagnetic Shielding MaterialsMetallic ShieldingShielding EffectivenessShielding Effectiveness AssessmentShielding Effectiveness Evaluation
The composites of nanoparticles of magnetic metals Co, Ni, and Ni–Fe dispersed on the nanolayers of expanded graphite (EG) were prepared by the impregnation of EG with ethanol solutions of metal acetates, followed by drying and reduction in H2. Such composites combined the properties of high electric conductivity of EG and magnetic conductivities of dispersed metals, and thus exhibited the high shielding effectiveness in a wide range of frequencies. Specifically, the composite containing 30%Ni and 70%EG reached the shielding effectiveness of 70–105dB at frequencies from 300kHzto1.5GHz.
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