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Microwave Absorption Enhancement and Complex Permittivity and Permeability of Fe Encapsulated within Carbon Nanotubes

Advanced Materials · 2004 · Vol. 16(5) · pp. 401–405

R. C.✉(Peking University)Lian‐Mao PengX. F. Duan(Chinese Academy of Sciences)Qing Chen(Peking University)Xuelei Liang(Peking University)

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Abstract

CNT/crystalline Fe nanocomposites (see Figure) have excellent microwave‐absorption characteristics. This absorption property is shown to result from the confinement of crystalline Fe in carbon nanoshells, deriving mainly from magnetic rather than electric effects—the complex permittivity and permeability depend both on the shape and phase of the CNT/Fe nanocapsulates.

Electromagnetic wave absorption materials Advanced Antenna and Metasurface TechnologiesMaterials sciencePermittivityCarbon nanotubeMicrowaveNanocompositePermeability (electromagnetism)NanoshellAbsorption (acoustics)Relative permeabilityComposite material

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