Electromagnetic wave absorbing properties and hyperfine interactions of Fe-Cu-Nb-Si-B nanocomposites

doi:10.1088/1674-1056/23/8/083301

中国物理B ›› 2014, Vol. 23 ›› Issue (8): 83301-083301.doi: 10.1088/1674-1056/23/8/083301

• SPECIAL TOPI—International Conference on Nanoscience & Technology, China 2013 • 上一篇下一篇

Electromagnetic wave absorbing properties and hyperfine interactions of Fe-Cu-Nb-Si-B nanocomposites

韩满贵^a, 郭韦^a, 吴燕辉^a, 刘明^b, Magundappa L. Hadimani^c

a State Key Laboratory of Electronic Thin Films and Integrated Devices, University of Electronic Science and Technology of China, Chengdu 610054, China;
b Analytical and Testing Center, Sichuan University, Chengdu 610064, China;
c Department of Electrical and Computer Engineering, Iowa State University, Ames, IA 50011, USA

收稿日期:2013-09-04 修回日期:2013-12-15 出版日期:2014-08-15 发布日期:2014-08-15
基金资助:
Project supported by the Research Fund for International Young Scientists of the National Natural Science Foundation of China (Grant No. 61250110544), the National Natural Science Foundation of China (Grant No. 61271039), the Scientific Foundation of Young Scientists in Sichuan Province, China (Grant No. 2012JQ0053), and the Program for New Century Excellent Talents in Universities, China (Grant No. NCET-11-0060).

Electromagnetic wave absorbing properties and hyperfine interactions of Fe-Cu-Nb-Si-B nanocomposites

Han Man-Gui (韩满贵)^a, Guo Wei (郭韦)^a, Wu Yan-Hui (吴燕辉)^a, Liu Min (刘明)^b, Magundappa L. Hadimani^c

a State Key Laboratory of Electronic Thin Films and Integrated Devices, University of Electronic Science and Technology of China, Chengdu 610054, China;
b Analytical and Testing Center, Sichuan University, Chengdu 610064, China;
c Department of Electrical and Computer Engineering, Iowa State University, Ames, IA 50011, USA

Received:2013-09-04 Revised:2013-12-15 Online:2014-08-15 Published:2014-08-15
Contact: Han Man-Gui E-mail:mangui@gmail.com
Supported by:
Project supported by the Research Fund for International Young Scientists of the National Natural Science Foundation of China (Grant No. 61250110544), the National Natural Science Foundation of China (Grant No. 61271039), the Scientific Foundation of Young Scientists in Sichuan Province, China (Grant No. 2012JQ0053), and the Program for New Century Excellent Talents in Universities, China (Grant No. NCET-11-0060).

摘要/Abstract

摘要： 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 (HR-TEM) images show the coexistence of these two phases. It is found that Fe-Si nanograins are surrounded by the retained amorphous ferromagnetic phase. Mössbauer 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.

关键词: Mö, ssbauer spectroscopy, magnetic permeability, nanocrystalline alloys

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 (HR-TEM) images show the coexistence of these two phases. It is found that Fe-Si nanograins are surrounded by the retained amorphous ferromagnetic phase. Mössbauer 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.

Key words: Mössbauer spectroscopy, magnetic permeability, nanocrystalline alloys

中图分类号: (M?ssbauer spectra)

33.45.+x

75.50.Bb (Fe and its alloys)

韩满贵, 郭韦, 吴燕辉, 刘明, Magundappa L. Hadimani. Electromagnetic wave absorbing properties and hyperfine interactions of Fe-Cu-Nb-Si-B nanocomposites[J]. 中国物理B, 2014, 23(8): 83301-083301.

Han Man-Gui (韩满贵), Guo Wei (郭韦), Wu Yan-Hui (吴燕辉), Liu Min (刘明), Magundappa L. Hadimani. Electromagnetic wave absorbing properties and hyperfine interactions of Fe-Cu-Nb-Si-B nanocomposites[J]. Chin. Phys. B, 2014, 23(8): 83301-083301.

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Electromagnetic wave absorbing properties and hyperfine interactions of Fe-Cu-Nb-Si-B nanocomposites

Electromagnetic wave absorbing properties and hyperfine interactions of Fe-Cu-Nb-Si-B nanocomposites

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