Synthesis of hexagonal Fe microflakes with excellent microwave absorption performance

Li Shun Fu; Jian Tang Jiang; Cheng Yan Xu; Liang Zhen

doi:10.1039/c2ce25836f

Synthesis of hexagonal Fe microflakes with excellent microwave absorption performance

Li Shun Fu
, Jian Tang Jiang
, Cheng Yan Xu
, Liang Zhen^*

^*Corresponding author for this work

Harbin Institute of Technology
Harbin Institute of Technology

Research output: Contribution to journal › Article › peer-review

89 Scopus citations

Abstract

Fe microflakes with uniform size and well-defined shape were successfully synthesized by hydrogen-thermal reduction of α-Fe₂O₃ precursor microflakes. The hexagonal Fe microflakes have edge lengths of about 5 μm and thicknesses of about 500-1000 nm. The complex permittivity and permeability of Fe microflakes-paraffin composite were measured using a vector network analyzer in the 2-18 GHz frequency range. Remarkable dielectric relaxation, natural resonance and exchange resonance were observed in the complex permittivity and permeability spectrum. Electromagnetic wave absorption (EMA) performance of samples was evaluated by using transmission line theory. An excellent microwave absorption performance was obtained for a coating containing Fe microflakes as filler, in which the maximum reflection loss is -15.3 dB and effective EMA band (RL < -10 dB) covers the whole frequency range of 12.2-16.6 GHz.

Original language	English
Pages (from-to)	6827-6832
Number of pages	6
Journal	CrystEngComm
Volume	14
Issue number	20
DOIs	https://doi.org/10.1039/c2ce25836f
State	Published - 21 Oct 2012

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abstract = "Fe microflakes with uniform size and well-defined shape were successfully synthesized by hydrogen-thermal reduction of α-Fe2O3 precursor microflakes. The hexagonal Fe microflakes have edge lengths of about 5 μm and thicknesses of about 500-1000 nm. The complex permittivity and permeability of Fe microflakes-paraffin composite were measured using a vector network analyzer in the 2-18 GHz frequency range. Remarkable dielectric relaxation, natural resonance and exchange resonance were observed in the complex permittivity and permeability spectrum. Electromagnetic wave absorption (EMA) performance of samples was evaluated by using transmission line theory. An excellent microwave absorption performance was obtained for a coating containing Fe microflakes as filler, in which the maximum reflection loss is -15.3 dB and effective EMA band (RL < -10 dB) covers the whole frequency range of 12.2-16.6 GHz.",

author = "Fu, \{Li Shun\} and Jiang, \{Jian Tang\} and Xu, \{Cheng Yan\} and Liang Zhen",

year = "2012",

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T1 - Synthesis of hexagonal Fe microflakes with excellent microwave absorption performance

AU - Fu, Li Shun

AU - Jiang, Jian Tang

AU - Xu, Cheng Yan

AU - Zhen, Liang

PY - 2012/10/21

Y1 - 2012/10/21

N2 - Fe microflakes with uniform size and well-defined shape were successfully synthesized by hydrogen-thermal reduction of α-Fe2O3 precursor microflakes. The hexagonal Fe microflakes have edge lengths of about 5 μm and thicknesses of about 500-1000 nm. The complex permittivity and permeability of Fe microflakes-paraffin composite were measured using a vector network analyzer in the 2-18 GHz frequency range. Remarkable dielectric relaxation, natural resonance and exchange resonance were observed in the complex permittivity and permeability spectrum. Electromagnetic wave absorption (EMA) performance of samples was evaluated by using transmission line theory. An excellent microwave absorption performance was obtained for a coating containing Fe microflakes as filler, in which the maximum reflection loss is -15.3 dB and effective EMA band (RL < -10 dB) covers the whole frequency range of 12.2-16.6 GHz.

AB - Fe microflakes with uniform size and well-defined shape were successfully synthesized by hydrogen-thermal reduction of α-Fe2O3 precursor microflakes. The hexagonal Fe microflakes have edge lengths of about 5 μm and thicknesses of about 500-1000 nm. The complex permittivity and permeability of Fe microflakes-paraffin composite were measured using a vector network analyzer in the 2-18 GHz frequency range. Remarkable dielectric relaxation, natural resonance and exchange resonance were observed in the complex permittivity and permeability spectrum. Electromagnetic wave absorption (EMA) performance of samples was evaluated by using transmission line theory. An excellent microwave absorption performance was obtained for a coating containing Fe microflakes as filler, in which the maximum reflection loss is -15.3 dB and effective EMA band (RL < -10 dB) covers the whole frequency range of 12.2-16.6 GHz.

UR - https://www.scopus.com/pages/publications/84866407423

U2 - 10.1039/c2ce25836f

DO - 10.1039/c2ce25836f

M3 - 文章

AN - SCOPUS:84866407423

SN - 1466-8033

VL - 14

SP - 6827

EP - 6832

JO - CrystEngComm

JF - CrystEngComm

IS - 20

ER -

Synthesis of hexagonal Fe microflakes with excellent microwave absorption performance

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