Application of Ferrite to Electromagnetic Wave Absorber and its Characteristics

Naito, Yoshiyuki; Suetake, Kunihiro

doi:10.1109/tmtt.1971.1127446

Cited by 827 publications

(356 citation statements)

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“…These behaviors mean that the neat silicon matrix presents low magnetic and dielectric losses. The literature cites similar behavior for other pure polymeric matrices 4,8,9 . Figure 5a shows the real permeability (µ') values which present a slight increase with the magnetic filler concentration increase into the RAM sample.…”

Section: Resultssupporting

confidence: 55%

Complex permeability and permittivity variation of radar absorbing materials based on MnZn ferrite in microwave frequencies

Gama

Rezende

2013

Mat. Res.

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The complex dielectric permittivity (ε) and magnetic permeability (µ) of Radar Absorbing Materials (RAM) based on magnetic particles (MnZn ferrite particles) embedded in a dielectric matrix (silicon rubber) have been studied in the frequency range of 2 to 18 GHz. The relative permeability and permittivity of MnZn ferrite-silicon composites for various mass fractions are measured by the transmission/reflection method using a vector network analyzer. The concentration dependence of permittivity and permeability on the evaluated frequency range is analyzed. In a general way, the results show ε' parameter presenting more significant variation among the evaluated parameters (ε", µ", µ'). The comparison of dielectric and magnetic loss tangents (ε"/ε' and µ"/µ', respectively) shows more clearly the variation of both parameters (ε and µ) according to the frequency. It is also observed that higher MnZn ferrite content fractions favor both dielectric and magnetic loss tangents.

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Section: Resultssupporting

confidence: 55%

Complex permeability and permittivity variation of radar absorbing materials based on MnZn ferrite in microwave frequencies

Gama

Rezende

2013

Mat. Res.

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“…Examples of such structures include Ba hexaferrite nanocrystals 10 and micron-size ferrite powders 11,12 in a rubber matrix, Fe-Si-Al alloy flakespolymer composites, 13 and CaCoTi ferrite-epoxy composites. 14 Microwave absorption in these materials is thought to be mainly due to magnetic resonance and interfacial electric polarization.…”

Section: Nanoparticle-assisted Microwave Absorption By Single-wall Camentioning

confidence: 99%

Nanoparticle-assisted microwave absorption by single-wall carbon nanotubes

Wadhawan

Garrett

Pérez

2003

Applied Physics Letters

186

117

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Irradiance influence on the multicolor photochromism of mesoporous TiO2 films loaded with silver nanoparticles Appl. Phys. Lett. 99, 173106 (2011) Computational study on structural modification of single-walled carbon nanotubes by electron irradiation J. Appl. Phys. 109, 054304 (2011) Multiwalled carbon nanotubes and dispersed nanodiamond novel hybrids: Microscopic structure evolution, physical properties, and radiation resilience J. Appl. Phys. 109, 014314 (2011) Continuous-wave laser annealing of Si-rich oxide: A microscopic picture of macroscopic Si-SiO2 phase separation

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“…The M15 material tended to absorb at slightly higher frequency than the P15 material, with peak absorptions for each material at 7.8 GHz and 5.5 GHz, respectively. The P15 material showed good broadband absorption (greater than -10dB) from 4.5 GHz (estimation based on extrapolation) to 6.5 GHz and the M15 showed good broadband absorption over most of the C-band and part of the X-band region tested (6)(7)(8)(9). In this range, the material can achieve 90% reflection loss [14].…”

Section: Discussionmentioning

confidence: 99%

“…Materials like ferrites [8,9,10] and carbonyl iron have been traditionally used in radar absorbing applications. More recently, many types of materials have been examined for microwave absorption.…”

Section: Introductionmentioning

confidence: 99%

Microwave Absorbing Properties of Metallic Glass/Polymer Composites

Bartolucci

2011

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Public reporting burden for this collection of information is estimated to average 1 hour per response, including the time for reviewing instructions, searching data sources, gathering and maintaining the data needed, and completing and reviewing the collection of information. AUTHOR(S)Stephen Bartolucci 5d. PROJECT NUMBER 5e. TASK NUMBER 5f. WORK UNIT NUMBER PERFORMING ORGANIZATION NAME(S) AND ADDRESS(ES)U.S. Army ARDEC Benet Laboratories, RDAR-WSB Watervliet, NY 12189-4000 PERFORMING ORGANIZATION REPORT NUMBERARWSB-TR-11022 SPONSORING/MONITORING AGENCY NAME(S) AND ADDRESS(ES)U.S. Army ARDEC Benet Laboratories, RDAR-WSB Watervliet, NY 12189-4000 SPONSOR/MONITOR'S ACRONYM(S)11. SPONSORING/MONITORING AGENCY REPORT NUMBER DISTRIBUTION AVAILABILITY STATEMENTApproved for public release; distribution is unlimited. SUPPLEMENTARY NOTES ABSTRACTIn this study, the microwave absorption characteristics of metallic glass / polymer composites were investigated. Electromagnetic wave absorption properties in the microwave spectrum are of particular importance to military applications. Radar absorbing materials have been studied for years and are of strategic importance for stealth technology. This work examined high magnetic permeability cobalt-based metallic glasses dispersed in epoxy matrices and measured the reflection loss behavior of the composites in the C-band and X-band spectrum. Results have shown that the metallic glass composites have good absorption in the region of interest due to the absorption properties of the glass particles and the graded structure of the composite. SUBJECT TERMSMicrowave absorption, metallic glass, polymer composites, electromagnetic wave absorption, c-band spectrum, and xband spectrum.

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Application of Ferrite to Electromagnetic Wave Absorber and its Characteristics

Cited by 827 publications

References 1 publication

Complex permeability and permittivity variation of radar absorbing materials based on MnZn ferrite in microwave frequencies

Complex permeability and permittivity variation of radar absorbing materials based on MnZn ferrite in microwave frequencies

Nanoparticle-assisted microwave absorption by single-wall carbon nanotubes

Microwave Absorbing Properties of Metallic Glass/Polymer Composites

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