Electro-magnetic properties of composites with aligned Fe-Co hollow fibers | Zendy

Seungchan Cho | Zendy; Jae Ryung Choi | Zendy; Byung Mun Jung | Zendy; U Hyeok Choi | Zendy; SangKwan Lee | Zendy; Ki Hyeon Kim | Zendy; SangBok Lee | Zendy

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Electro-magnetic properties of composites with aligned Fe-Co hollow fibers

Author(s) -

Seungchan Cho,

Jae Ryung Choi,

Byung Mun Jung,

U Hyeok Choi,

SangKwan Lee,

Ki Hyeon Kim,

SangBok Lee

Publication year - 2016

Publication title -

aip advances

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.421

H-Index - 58

ISSN - 2158-3226

DOI - 10.1063/1.4943925

Subject(s) - materials science , composite material , fiber , permittivity , coercivity , dielectric , anisotropy , magnetic field , polyester , magnetization , optoelectronics , optics , condensed matter physics , physics , quantum mechanics

A novel Fe-Co binary hollow fiber was synthesized by electroless plating using hydrolyzed polyester fiber and its anisotropy characteristic was investigated for electromagnetic wave absorbing materials. The hollow fibers in parallel with magnetic field show higher saturated magnetization of 202 emu/g at the applied magnetic field of 10 kOe and lower coercivity (27.658 Oe), compared with the random and vertical oriented hollow fibers. From complex permittivity measurement, the Fe-Co hollow fiber composites clearly display a single dielectric resonance, located at ∼14 GHz. The Fe-Co hollow fibers not only provide excellent EM properties in GHz frequency ranges, resulting mainly from the strong resonance, but also adjust the soft magnetic properties through fiber alignments. The cavitary structure of the Fe-Co hollow fibers, not only giving rise to a dielectric loss resonance and also adjusting its peak frequency, may be a pathway to useful EM wave absorptive devices in GHz frequency ranges

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