Enhanced electromagnetic wave absorption properties of Fe nanowires in gigaherz range

被引：166
|
作者：
Liu, Jiu-rong [1 ]
Itoh, Masahiro [1 ]
Terada, Masao [1 ]
Horikawa, Takashi [1 ]
Machida, Ken-ichi [1 ]
机构：
[1] Osaka Univ, Ctr Adv Sci & Innovat, Suita, Osaka 5650871, Japan
来源：
APPLIED PHYSICS LETTERS | 2007年 / 91卷 / 09期
关键词：
D O I：
10.1063/1.2775804
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
Fe nanowires with 70-200 nm in diameter and 20-50 mu m in length were synthesized by a chemical vapor deposition method for electromagnetic wave absorption application. The frequency dependences of relative permittivity (epsilon(r)) and permeability (mu(r)) were strongly dependent on the diameter of Fe wires. Compared with micrometer wires or flakelike samples, nanowires exhibited a magnetic resonance (mu(')(r)) peak in the range of 1-18 GHz, suggesting that nanowires have significant effect for reducing the eddy current loss, therefore, the resin compacts of 29 vol % Fe nanowires with thicknesses of 1.3-4.0 mm provided good electromagnetic wave absorption performances in the range of 5.6-18 GHz.
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页数：3
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