中国物理B ›› 2011, Vol. 20 ›› Issue (6): 60701-060701.doi: 10.1088/1674-1056/20/6/060701

• GENERAL • 上一篇    下一篇

Fabrication and electromagnetic wave absorption properties of amorphous Ni–P nanotubes

陆海鹏, 韩满贵, 蔡黎, 邓龙江   

  1. State Key Laboratory of Electronic Thin Films and Integrated Devices, University of Electronic Science and Technology of China, Chengdu 610054, China
  • 收稿日期:2010-09-03 修回日期:2010-12-07 出版日期:2011-06-15 发布日期:2011-06-15
  • 基金资助:
    Project supported by the National Natural Science Foundation of China (NSFC) (Grant No. 60701016), NSFC{Royal Society of UK International Jointed Program (Grant No. 60911130130), the Fundamental Research Funds for the Central Universities, China (Grant No. ZYGX2009J036), and the Prior Research of the State Key Development Program for Basic Research of China (Grant No. 2010CB334702).

Fabrication and electromagnetic wave absorption properties of amorphous Ni–P nanotubes

Lu Hai-Peng(陆海鹏), Han Man-Gui(韩满贵)†, Cai Li(蔡黎), and Deng Long-Jiang(邓龙江)   

  1. State Key Laboratory of Electronic Thin Films and Integrated Devices, University of Electronic Science and Technology of China, Chengdu 610054, China
  • Received:2010-09-03 Revised:2010-12-07 Online:2011-06-15 Published:2011-06-15
  • Supported by:
    Project supported by the National Natural Science Foundation of China (NSFC) (Grant No. 60701016), NSFC{Royal Society of UK International Jointed Program (Grant No. 60911130130), the Fundamental Research Funds for the Central Universities, China (Grant No. ZYGX2009J036), and the Prior Research of the State Key Development Program for Basic Research of China (Grant No. 2010CB334702).

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摘要： Amorphous Ni-P nanotubes are fabricated through electroless chemical deposition inside an anodic aluminum oxide template. The hysteresis loops of Ni-P nanotube arrays are each found to exhibit an unusual isotropic behaviour, which is believed to be due to the competition results between the shape anisotropy and the magnetostatic interaction among nanotubes. The dynamic dependence of permittivity on the frequency spectrum is fitted to the Lorentzian-type dispersion law. The permeability dispersion behaviours have been fitted based on the Kittel equation. Electromagnetic wave absorption properties of Ni-P nanotubes/paraffin composites with different values of thickness (t) are clearly shown by a three-dimensional graph. Furthermore, the bandwidths of composites with different "t" values can be well presented by a two-dimensional contour graph, which is a novel presentation form. The results show that the composites each have a good microwave absorption performance with t larger than 5.5 mm and with the frequency around 8 gigahertz.

Abstract: Amorphous Ni-P nanotubes are fabricated through electroless chemical deposition inside an anodic aluminum oxide template. The hysteresis loops of Ni-P nanotube arrays are each found to exhibit an unusual isotropic behaviour, which is believed to be due to the competition results between the shape anisotropy and the magnetostatic interaction among nanotubes. The dynamic dependence of permittivity on the frequency spectrum is fitted to the Lorentzian-type dispersion law. The permeability dispersion behaviours have been fitted based on the Kittel equation. Electromagnetic wave absorption properties of Ni-P nanotubes/paraffin composites with different values of thickness (t) are clearly shown by a three-dimensional graph. Furthermore, the bandwidths of composites with different “t ”values can be well presented by a two-dimensional contour graph, which is a novel presentation form. The results show that the composites each have a good microwave absorption performance with t larger than 5.5 mm and with the frequency around 8 gigahertz.

Key words: magnetic permeability, permittivity, microwave absorber, magnetic nanotubes

中图分类号:  (Magnetic instruments and components)

  • 07.55.-w
77.22.Ch (Permittivity (dielectric function)) 84.40.-x (Radiowave and microwave (including millimeter wave) technology) 85.35.Kt (Nanotube devices)