Magnetic Properties of Fe@FeSiAl Oxide Nanoparticles and Magneto-Dielectric Properties of Their Composite Sheets

Choi, Donchul; Choi, Moosung; Kim, Jongryoul

doi:10.1109/tmag.2014.2325867

Cited by 7 publications

(4 citation statements)

References 9 publications

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“…It is expected that the large aspect ratio of the FeSiAl sheets is favorable to increasing the magnetic loss in high-frequency region by overcoming the Snoek’s limit. Moreover, the thickness of the sheet is close to the typical skin depth of traditional FeSiAl alloy (~2 μm) 30 . which is also beneficial for suppressing the negative effect of the eddy current 31 32 33 in alternating EM field.…”

Section: Resultsmentioning

confidence: 55%

Flaky FeSiAl alloy-carbon nanotube composite with tunable electromagnetic properties for microwave absorption

Huang

Liu

Chuai

et al. 2016

Sci Rep

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Flaky FeSiAl alloy/multi-wall carbon nanotube (FeSiAl/MWCNT) composite was fabricated by facile and scalable ball milling method. The morphology and electromagnetic properties of the FeSiAl alloy can be well tuned by controlling the milling time. It is found that the magnetic loss of the FeSiAl alloy is improved by optimizing the milling time due to the increased anisotropy field. Meanwhile the addition of MWCNTs enhances the dielectric loss of the composite by increasing the interfacial polarizations, dipolar polarizations and conductive paths. Relative to conventional FeSiAl absorbers, the FeSiAl/MWCNT composite exhibits greatly improved microwave absorption performance with advantages of strong absorption and small thickness. The minimum reflection loss of the composite reaches −42.8 dB at 12.3 GHz at a very thin thickness of 1.9 mm.

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Section: Resultsmentioning

confidence: 55%

Flaky FeSiAl alloy-carbon nanotube composite with tunable electromagnetic properties for microwave absorption

Huang

Liu

Chuai

et al. 2016

Sci Rep

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“…The nn environment with 24 T B hf, named as Fe (6), could be actual Fe (6) or Fe(7) with full non-magnetic next nearest neighbor atoms. In alloys with low temperature treatment the NIAs are well distributed but not ordered in lattice, so the ratio of Fe(6) are most common in the alloy.…”

Section: Mössbauer Fitting Resultsmentioning

confidence: 99%

“…Phase diagram of Fe-Si alloys were found showing coexistence of B2 (FeSi) and DO3 (Fe 3 Si) ordered phases in the composition range 10-13 at.% Si theoretically and experimentally [5]. Fe-Si alloys with Al addition have been considered one of the most suitable materials for powder cores since the alloy with ordered phases shows the highest permeability [6], however the core loss of Fe-Si-Al increases linearly with temperature. Cr addition could improve the corrosion resistance and temperature stability of Fe-Si alloys [7], and enhances ductility for a better ball milling effect, but also increases the coercivity and reduces the high frequency magnetic performance.…”

Section: Introductionmentioning

confidence: 99%

Evolution of hyperfine structure and magnetic characteristic in Fe-Si-Cr alloy with increasing heat treatment temperature

Wang

Zhang

et al. 2016

Materials & Design

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“…Recently, a sensor made of a polymer composite substrate with preferable mechanical and electrical characteristics has attracted the interest of researchers. Various kinds of elements are composed with a variety of additions, possibly nickel ferrite, ceramic, and titanium [ 8 ]. One of the significant gains of applying dielectric with magnetic based relative permeability as well as permittivity to exceed the unity (εr and μr > 1) [ 9 ] is the miniaturization of the size of the probe [ 10 ].…”

Section: Introductionmentioning

confidence: 99%

Properties and Performance Verification on Magnetite Polydimethylsiloxane Graphene Array Microwave Sensor

Jamlos

Alias

et al. 2021

Polymers

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This paper investigates the use of a Magnetite Polydimethylsiloxane (PDMS) Graphene array sensor in ultra-wide band (UWB) spectrum for microwave imaging applications operated within 4.0–8.0 GHz. The proposed array microwave sensor comprises a Graphene array radiating patch, as well as ground and transmission lines with a substrate of Magnetite PDMS-Ferrite, which is fed by 50 Ω coaxial ports. The Magnetite PDMS substrate associated with low permittivity and low loss tangent realized bandwidth enhancement and the high conductivity of graphene, contributing to a high gain of the UWB array antenna. The combination of 30% (ferrite) and 70% (PDMS) as the sensor’s substrate resulted in low permittivity as well as a low loss tangent of 2.6 and 0.01, respectively. The sensor radiated within the UWB band frequency of 2.2–11.2 (GHz) with great energy emitted in the range of 3.5–15.7 dB. Maximum energy of 15.7 dB with 90 × 45 (mm) in small size realized the integration of the sensor for a microwave detection system. The material components of sensor could be implemented for solar panel.

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Magnetic Properties of Fe@FeSiAl Oxide Nanoparticles and Magneto-Dielectric Properties of Their Composite Sheets

Cited by 7 publications

References 9 publications

Flaky FeSiAl alloy-carbon nanotube composite with tunable electromagnetic properties for microwave absorption

Flaky FeSiAl alloy-carbon nanotube composite with tunable electromagnetic properties for microwave absorption

Evolution of hyperfine structure and magnetic characteristic in Fe-Si-Cr alloy with increasing heat treatment temperature

Properties and Performance Verification on Magnetite Polydimethylsiloxane Graphene Array Microwave Sensor

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