| Electromagnetic wave absorbing properties and hyperfine interactions of Fe–Cu–Nb–Si–B nanocomposites |
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| 引用本文： | 韩满贵,郭韦,吴燕辉,刘明,Magundappa L. Hadimanic.Electromagnetic wave absorbing properties and hyperfine interactions of Fe–Cu–Nb–Si–B nanocomposites[J].中国物理 B,2014(8):50-54. |
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| 作者姓名： | 韩满贵 郭韦 吴燕辉 刘明 Magundappa L. Hadimanic |
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| 作者单位： | State Key Laboratory of Electronic Thin Films and Integrated Devices, University of Electronic Science and Technology of China;Analytical and Testing Center, Sichuan University;Department of Electrical and Computer Engineering, Iowa State University |
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| 基金项目： | 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);the Program for New Century Excellent Talents in Universities,China(Grant No.NCET-11-0060) |
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| 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(HRTEM) images show the coexistence of these two phases. It is found that Fe–Si nanograins are surrounded by the retained amorphous ferromagnetic phase. M¨ossbauer spectroscopy measurements show that the nanophase is the D03-type Fe–Si phase, which is employed to find the atomic fractions of resonant57 Fe 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.
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| 关 键 词： | M¨ossbauer spectroscopy magnetic permeability nanocrystalline alloys |
Electromagnetic wave absorbing properties and hyperfine interactions of Fe-Cu-Nb-Si-B nanocomposites |
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| Han Man-Gui,;GuoWei,;Wu Yan-Hui,;Liu Min,;Magundappa L. Hadimani.Electromagnetic wave absorbing properties and hyperfine interactions of Fe-Cu-Nb-Si-B nanocomposites[J].Chinese Physics B,2014(8):50-54. |
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| Authors: | Han Man-Gui ;GuoWei ;Wu Yan-Hui ;Liu Min ;Magundappa L Hadimani |
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| Abstract: | Mossbauer spectroscopy, magnetic permeability, nanocrystalline alloys |
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| Keywords: | Mossbauer spectroscopy magnetic permeability nanocrystalline alloys |
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