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Electromagnetic wave absorbing properties and hyperfine interactions of Fe-Cu-Nb-Si-B nanocomposites
Chinese Physics B
  • Han Man-Gui, University of Electronic Science and Technology of China
  • Guo Wei, University of Electronic Science and Technology of China
  • Wu Yan-Hui, University of Electronic Science and Technology of China
  • Liu Min, Sichuan University
  • M. Ravi Hadimani, Iowa State University
  • Deng Long-Jiang, University of Electronic Science and Technology of China
Document Type
Article
Publication Version
Accepted Manuscript
Publication Date
6-1-2014
DOI
10.1088/1674-1056/23/8/083301
Abstract
The Fe–Cu–Nb–Si–B alloy nanocomposite containing two ferromagnetic phases (amorphous phase and nanophase phase) is obtained by properly annealing the as-prepared alloys. High resolution transmission electron microscopy (HRTEM) images show the coexistence of these two phases. It is found that Fe–Si nanograins are surrounded by the retained amorphous ferromagnetic phase. Mossbauer spectroscopy measurements show that the nanophase is the D03-type Fe– Si phase, which is employed to find the atomic fractions of resonant 57Fe atoms in these two phases. The microwave permittivity and permeability spectra of Fe–Cu–Nb–Si–B nanocomposite are measured in the frequency range of 0.5 GHz– 10 GHz. Large relative microwave permeability values are obtained. The results show that the absorber containing the nanocomposite flakes with a volume fraction of 28.59% exhibits good microwave absorption properties. The reflection loss of the absorber is less than −10 dB in a frequency band of 1.93 GHz–3.20 GHz.
Comments

This is a manuscript of an article from Chinese Physics B 23 (2014): 083301, doi: 10.1088/1674- 1056/23/8/083301. Posted with permission.

Copyright Owner
Chinese Physical Society and IOP Publishing Ltd
Language
en
File Format
application/pdf
Citation Information
Han Man-Gui, Guo Wei, Wu Yan-Hui, Liu Min, et al.. "Electromagnetic wave absorbing properties and hyperfine interactions of Fe-Cu-Nb-Si-B nanocomposites" Chinese Physics B Vol. 23 Iss. 8 (2014) p. 083301-1 - 083301-5
Available at: http://works.bepress.com/rlhadimani/21/