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Indexed by:期刊论文

Date of Publication:2010-07-19

Journal:APPLIED PHYSICS LETTERS

Included Journals:SCIE、EI

Volume:97

Issue:3

ISSN No.:0003-6951

Key Words:electromagnetic wave propagation; magnetic particles; magnetic permeability; nanocomposites; nanoparticles; nickel; numerical analysis; permittivity

Abstract:We report an anomalously electromagnetic resonance in a simple Ni nanoparticle/paraffin system. The resonance, caused by the near-field interaction of nanoparticles, appears at similar to 16 GHz as decreasing the interparticle distance down to similar to 11 nm. It is associated with an unusual energy transfer from the permeability to permittivity, resulting in the enhanced dielectric and weakened magnetic attenuations. These experimental results can be well modeled by a numerical simulation, evidencing the enhanced electrical filed distribution as decreasing the interaction distance. This study enables us to first realize the permeability-to-permittivity transform of electromagnetic wave in nanocomposites. (C) 2010 American Institute of Physics. [doi: 10.1063/1.3464975]