期刊
APPLIED PHYSICS LETTERS
卷 103, 期 26, 页码 -出版社
AMER INST PHYSICS
DOI: 10.1063/1.4858976
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资金
- Japan Society of the Promotion of Science [21360340]
- Grants-in-Aid for Scientific Research [25242015] Funding Source: KAKEN
The relative complex permittivity and permeability spectra of the coagulated copper and yttrium iron garnet (Cu/YIG) hybrid granular composite materials have been studied in the microwave range. The insulator to metal transition was observed at the percolation threshold of Cu particle content (phi(Cu) = 16.0 vol. %) in the electrical conductivity. In the percolation threshold, the low frequency plasmonic state caused by the metallic Cu particle networks was observed. The percolated Cu/YIG granular composites show simultaneous negative permittivity and permeability spectra under external magnetic fields. (C) 2013 AIP Publishing LLC.
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