Electromagnetic wave absorption properties of α-Fe/Fe3B/Y2O3 nanocomposites in gigahertz range
作者： Jiu Rong Liu , Masahiro Itoh , Ken-ichi Machida
DOI: 10.1063/1.1623934
关键词:
摘要: Nanocomposites α-Fe/Fe3B/Y2O3 were prepared by a melt-spun technique, and the electromagnetic wave absorption properties measured in 0.05–20.05 GHz range. Compared with α-Fe/Y2O3 composites, resonance frequency (fr) of shifted to higher range due large anisotropy field (HA) tetragonal Fe3B (∼0.4 MA/m). The relative permittivity (er=er′−jer″) was constantly low over 0.5–10 region, which indicates that composite powders have high resistivity (ρ=∼100 Ω m). effective (reflection loss <−20 dB) obtained 2.7–6.5 on resin composites 80 wt % powders, thickness 6–3 mm, respectively. A minimum reflection −33 dB observed at 4.5 an absorber 4 mm.
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