标题:A GHz range electromagnetic wave absorber with wide bandwidth made of FeCO/Y2O3 nanocomposites
作者:Liu, JR; Itoh, M; Jiang, JZ; Machida, KI
作者机构:[Liu, JR; Itoh, M; Jiang, JZ; Machida, KI]Osaka Univ, Collaborat Res Ctr Adv Sci & Technol, Suita, Osaka 5650871, Japan.;[Liu, JR; Itoh, M; 更多
通讯作者:Machida, KI
通讯作者地址:[Machida, KI]Osaka Univ, Collaborat Res Ctr Adv Sci & Technol, 2-1 Yamadaoka, Suita, Osaka 5650871, Japan.
来源:JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS
出版年:2004
卷:271
期:2-3
页码:L147-L152
DOI:10.1016/j.jmmm.2003.12.01386
关键词:melt spinning; nanocomposites; electromagnetic wave absorption; magnetic; anisotropy; matching frequency
摘要:Nanocomposites consisting of fine particles of FeCo (similar to 30 nm) and Y2O3 (similar to 15 nm) have been prepared from an intermetallic compound Y-2(Fe0.5Co0.5)(17) by melt-spinning techniques and subsequent hydrogenation-disproportionation and oxidation treatments. The electromagnetic (EM) wave absorption properties were characterized in a frequency range of 0.05-20.05 GHz. The measured real part (epsilon(r)'') and imaginary part (epsilon(r)'') of the relative permittivity were small and approximately constant in the 1-10 GHz range. The imaginary part of relative permeability mu(r)'' exhibited two resonant peaks and a high value over the 1-10 GHz range. As a result, the resin composites with 80 wt% FeCo/Y2O3 powders exhibited excellent EM wave absorption properties (reflection loss RL < -20 dB) in a frequency range of 2.7-8.1 GHz, with thickness of 2.2-5.7mm, respectively. A minimum RL of -43dB was observed at 5.6GHz with an absorber thickness of 3 mm. (C) 2004 Elsevier B.V. All rights reserved.
收录类别:EI;SCOPUS;SCIE
WOS核心被引频次:28
Scopus被引频次:34
资源类型:期刊论文
原文链接:https://www.scopus.com/inward/record.uri?eid=2-s2.0-1642375949&doi=10.1016%2fj.jmmm.2003.12.1386&partnerID=40&md5=ea9e9e709a594f6f43c4761dbf1a4607
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