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Microwave Absorption Enhancement and Complex Permittivity and Permeability of Fe Encapsulated within Carbon Nanotubes
Author(s) -
Che R. C.,
Peng L.M.,
Duan X. F.,
Chen Q.,
Liang X. L.
Publication year - 2004
Publication title -
advanced materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 10.707
H-Index - 527
eISSN - 1521-4095
pISSN - 0935-9648
DOI - 10.1002/adma.200306460
Subject(s) - materials science , permittivity , carbon nanotube , microwave , nanocomposite , permeability (electromagnetism) , nanoshell , absorption (acoustics) , relative permeability , composite material , nanoparticle , nanotechnology , dielectric , optoelectronics , porosity , membrane , physics , quantum mechanics , biology , genetics
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.