Electromagnetic-wave-absorption properties of wire-like structures self-assembled by FeCo nanocapsules

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	Electromagnetic-wave-absorption properties of wire-like structures self-assembled by FeCo nanocapsules
	X. G. Liu; D. Y. Geng; H. Meng; B. Li; Q. Zhang; D. J. Kang; Z. D. Zhang
	2008
发表期刊	Journal of Physics D-Applied Physics
ISSN	0022-3727
卷号	41 期号:17
摘要	Al(2)O(3)-coated FeCo nanocapsules were synthesized by the arc-discharge method and three-dimensional wire-like macro-aggregates were self-assembled simultaneously by nanocapsules. The electromagnetic (EM) parameters (i.e. the relative permeability and permittivity) were measured at 2-18 GHz. As a consequence of the surface-and shape-anisotropy energy of the nanocapsules, a natural resonance at 6 GHz is dominant in the microwave absorption properties. A reflection loss (RL) exceeding - 20 dB was obtained in the frequency range 4.2-18 GHz for absorber thicknesses of 1.3-6 mm. An optimal RL of - 51 dB was found at 10.2 GHz for an absorber thickness of 2 mm. As a result, the Al(2)O(3)-coated FeCo nanocapsules show good prospects of being applied in EM wave absorptive devices.
部门归属	[liu, x. g.; geng, d. y.; meng, h.; li, b.; zhang, q.; kang, d. j.; zhang, z. d.] chinese acad sci, inst met res, shenyang natl lab mat sci, shenyang 110016, peoples r china. [liu, x. g.; geng, d. y.; meng, h.; li, b.; zhang, q.; kang, d. j.; zhang, z. d.] chinese acad sci, int ctr mat phys, shenyang 110016, peoples r china.;liu, xg (reprint author), chinese acad sci, inst met res, shenyang natl lab mat sci, 72 wenhua rd, shenyang 110016, peoples r china;liuxg@imr.ac.cn
关键词	Microwave-absorption Magnetic-properties Surface Anisotropy Gigahertz Range Nanocomposites Nanoparticles Alpha-fe/fe3b/y2o3 Alpha-fe/y2o3 Feco/y2o3 Films
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WOS记录号	WOS:000258680500018
引用统计	被引频次：31[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/32972
专题	中国科学院金属研究所
推荐引用方式 GB/T 7714	X. G. Liu,D. Y. Geng,H. Meng,et al. Electromagnetic-wave-absorption properties of wire-like structures self-assembled by FeCo nanocapsules[J]. Journal of Physics D-Applied Physics,2008,41(17).
APA	X. G. Liu.,D. Y. Geng.,H. Meng.,B. Li.,Q. Zhang.,...&Z. D. Zhang.(2008).Electromagnetic-wave-absorption properties of wire-like structures self-assembled by FeCo nanocapsules.Journal of Physics D-Applied Physics,41(17).
MLA	X. G. Liu,et al."Electromagnetic-wave-absorption properties of wire-like structures self-assembled by FeCo nanocapsules".Journal of Physics D-Applied Physics 41.17(2008).