Preparation and microwave absorption property of the core-nanoshell composite absorbers with magnetic fly-ash hollow cenosphere as nuclear

Ru-Xin Che; Ying-Juan Ni

doi:10.1117/12.837464

20 October 2009 Preparation and microwave absorption property of the core-nanoshell composite absorbers with magnetic fly-ash hollow cenosphere as nuclear

Ru-Xin Che, Ying-Juan Ni

Author Affiliations +

Proceedings Volume 7493, Second International Conference on Smart Materials and Nanotechnology in Engineering; 74934U (2009) https://doi.org/10.1117/12.837464
Event: Second International Conference on Smart Materials and Nanotechnology in Engineering, 2009, Weihai, China

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-

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Ru-Xin Che and Ying-Juan Ni "Preparation and microwave absorption property of the core-nanoshell composite absorbers with magnetic fly-ash hollow cenosphere as nuclear", Proc. SPIE 7493, Second International Conference on Smart Materials and Nanotechnology in Engineering, 74934U (20 October 2009); https://doi.org/10.1117/12.837464

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