Journal
APPLIED PHYSICS LETTERS
Volume 95, Issue 2, Pages -Publisher
AMER INST PHYSICS
DOI: 10.1063/1.3177067
Keywords
carbon; cobalt alloys; dielectric losses; electromagnetic wave absorption; ferromagnetic materials; ferromagnetic resonance; iron alloys; magnetic permeability; nanocomposites; nanofabrication; permittivity
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Funding
- National Nature Science Foundation of China [50831006, 50701045]
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Electromagnetic-wave absorption by FeCo/C nanocapsules has been investigated. In contrast to earlier reported materials, including other nanocapsules, the absorption amplitude of FeCo/C nanocapsules is found not to decrease with increasing absorption-layer thickness. A reflection loss (RL) exceeding -20 dB can be obtained for all frequencies within the 2-18 GHz range by choosing an appropriate layer thickness between 1.6 and 8.5 mm. The broadest bandwidth (RL values exceeding -10 dB) from 10 to 18 GHz, covering half of the X-band and the whole K-u-band, is obtained for a 2 mm layer.
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