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Proceedings Paper

Preparation and microwave absorption property of the core-nanoshell composite absorbers with magnetic fly-ash hollow cenosphere as nuclear
Author(s): Ru-Xin Che; Ying-Juan Ni
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Paper Abstract

The core-nanoshell composite absorbers with magnetic fly-ash hollow cenosphere as nuclear were prepared by a solid-state reaction method. The results of X-ray diffraction analysis (XRD), scanning electron microscope (SEM), transmission electron microscope (TEM) and vector network analyzer (VNA) analysis indicated that the hollow cenosphere is dielectric loss; the exchange-coupling interaction happens between ferrite of hollow cenosphere and nanocrystalline magnetic material coating. The exchange-coupling interaction enhance magnetic loss of composite absorbers. They have a perfect electromagnetic parameters at high and low microwave frequency. In the frequency between 2 GHz and 18 GHz, The reflectivity is lower than 10dB in low-frequency, and it is consistent with requirements of the microwave absorbing material at the low-

Paper Details

Date Published: 20 October 2009
PDF: 6 pages
Proc. SPIE 7493, Second International Conference on Smart Materials and Nanotechnology in Engineering, 74934U (20 October 2009); doi: 10.1117/12.837464
Show Author Affiliations
Ru-Xin Che, Dalian Jiaotong Univ. (China)
Ying-Juan Ni, Dalian Jiaotong Univ. (China)


Published in SPIE Proceedings Vol. 7493:
Second International Conference on Smart Materials and Nanotechnology in Engineering
Jinsong Leng; Anand K. Asundi; Wolfgang Ecke, Editor(s)

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