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Α-Fe /Nd2Fe14B Nanocomposites for Electromagnetic-Wave-Absorber in GHz Microwave Frequencies

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Abstract:

Nd5Fe92B3 alloy was induction-melted. The α-Fe compounded low content of Nd2Fe14B nanocomposites were prepared using a melt-spinning method, subsequent annealing treatment, and ball milling. The complex permittivity, permeability of composites was measured in the 0.5-18 GHz frequency range. The permeability spectra exhibits relaxation type characteristic. The α-Fe/Nd2Fe14B composites shows an excellent microwave absorption property (reflection loss: RL<-20dB) in 9-17GHz with thin matching thickness 1.6-2.5 mm, due to the cooperate effect of magnetic loss and dielectric loss. α-Fe/Nd2Fe14B nanocomposites are thought to be a good microwave absorbers in GHz microwave range.

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Periodical:

Advanced Materials Research (Volumes 399-401)

Pages:

1102-1106

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.399-401.1102

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Online since:

November 2011

Authors:

Li Xian Lian, Ying Liu, Long Jiang Deng

Keywords:

Electromagnetic Wave Absorber, Microwave Electromagnetic Properties, Nanocomposite, Nd2Fe14B

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© 2012 Trans Tech Publications Ltd. All Rights Reserved

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