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Title: Electromagnetic microwave absorption of Fe-Si flakes with different mixtures
Authors: Tian, N.1 ; You, C.Y.1 ; Liu, J.1 ; Qu, F.1 ; Wang, C.H.1 ; Lu, Z.X.1/田娜;游才印;;
Author affiliation: 1 School of Materials Science and Engineering, Xi'An University of
Technology, Xi'an 710048, China
Corresponding author: You, C.Y. ([e-mail])
Source title: Journal of Magnetism and Magnetic Materials
Abbreviated source title: J Magn Magn Mater
Volume: 339
Issue date: August 2013
Publication year: 2013
Pages: 114-118
Language: English
ISSN: 03048853
CODEN: JMMMDC
Document type: Journal article (JA)
Publisher: Elsevier, P.O. Box 211, Amsterdam, 1000 AE, Netherlands
Abstract: Flakes of Fe-Si alloy were fabricated to get a relatively high permeability. Additives of
graphene, TiO2 and ZnO were mixed with the Fe-Si flakes. The magnetic properties of the Fe-Si
alloy flakes were slightly affected by mixing, causing little decrease of the complex permeability.
But the complex permittivity was significantly reduced due to the enhanced interfacial resistivity
after mixing with graphene, TiO2 or ZnO, resulting in a better electromagnetic impedance
matching. The best microwave absorption performance was achieved by mixing TiO2: for an
absorber thickness of 1.5 mm, a minimum reflection loss (RL) of -14.1 dB was obtained at 7.1 GHz
with a large width of 3.6 GHz in which the RL is lower than -10 dB; with the absorber thickness of
2.4 mm, the minimum RL reaches -35.3 dB at 4.2 GHz. The different effects among graphene,
TiO2 and ZnO additives on the electromagnetic properties are mainly related to the morphology
of the additives rather than their intrinsic characteristics. © 2013 Elsevier B.V. All rights reserved.
Number of references: 24
Main heading: Silicon alloys
Controlled terms: Dielectric properties - Electromagnetism - Graphene - Iron alloys
- Iron compounds - Mixing - Silicon - Titanium dioxide - Zinc alloys - Zinc
oxide
Uncontrolled terms: Absorber thickness - Complex permeability - Complex permittivity
- Electromagnetic impedance - Electromagnetic properties - Fe-Si flakes - Intrinsic
characteristics - Microwave absorption
Classification code: 804 Chemical Products Generally - 802.3 Chemical Operations - 761
Nanotechnology - 804.2 Inorganic Compounds - 701 Electricity and Magnetism - 546.3
Zinc and Alloys - 545.3 Steel - 549.3 Nonferrous Metals and Alloys excluding Alkali and
Alkaline Earth Metals
DOI: 10.1016/j.jmmm.2013.03.003
Database: Compendex
Compilation and indexing terms, © 2013 Elsevier Inc.
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