Doping Effect of Single-Wall Carbon Nanotubes on the Microwave Absorption Properties of Nanocrystalline Barium Ferrite

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概要

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• The microwave absorption properties of single-wall carbon nanotubes (SWNCTs) and barium ferrite nanocrystalline (SWCNT/BaFe12O19) composites with different doping ratios are investigated in the frequency region of 2–18 GHz. The transmission line theory is used to calculate the reflection loss properties, and microwave absorptive mechanism of the SWCNT/BaFe12O19 composites is discussed. The experiment results reveal that the microwave absorption properties of composite are very sensitive to the volume percentage of SWCNTs. Owing to the multiple absorptive mechanisms, the microwave absorption properties of composite are evidently improved. When SWCNTs are doped with 6 vol % of the sample volume, the maximum reflection loss of the SWCNT/BaFe12O19 composite with a 3 mm thickness reaches 30.79 dB at 10.5 GHz, and the range of resonance absorption peak below $-10$ dB is about 6 GHz.

• 2010-12-25

著者

• An Kang

  Department Of Internal Medicine Hospital Attached To Second Medical College Of Tianjin

• Zhao Xinluo

  Department Of Materials Science And Engineering Meijo University

• Ando Yoshinori

  Department Of Applied Physics Faculty Of Engineering Nagoya University

• He Keqiang

  Department of Physics and Institute of Low-dimensional Carbons and Device Physics, Shanghai University, Shanghai 200444, China

• Yu Liming

  Department of Physics and Institute of Low-dimensional Carbons and Device Physics, Shanghai University, Shanghai 200444, China

• Sheng Leimei

  Department of Physics and Institute of Low-dimensional Carbons and Device Physics, Shanghai University, Shanghai 200444, China

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