Synthesis and Property Study of Films of Microwave-Absorbing Composites Consisting of Mn0.5792Zn0.2597Fe2.1612O4 Inclusions and the –[(CH2–CH2)m–(CF2–CF2)n]k– Polymer Matrix

Shakirzyanov, R. I.; Kostishyn, V.G.; Морченко, А. Т.; Isaev, I. M.; Козлов, В. В.; Astakhov, V. A.

doi:10.1134/s0036023620060194

Cited by 7 publications

(4 citation statements)

References 24 publications

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“…It also should be noted that PVDF copolymer reflex decomposition into components, related to the ordered ferroelectric β-phase (110) and paraelectric phase, shows that with introduction of ferrite mass fraction, equal to 20%, the increase of crystallite size in the composite from 7.28 to 10.82 nm is observed. This can indicate the rise of polymer crystallinity degree at introduction of ferrite inclusions, as was described in other studies on composites of ferritespinel/PVDF [22,23].…”

Section: Resultssupporting

confidence: 75%

Electromagnetic properties of polymer composites Li-=SUB=-0.33-=/SUB=-Fe-=SUB=-2.29-=/SUB=-Zn-=SUB=-0.21-=/SUB=-Mn-=SUB=-0.17-=/SUB=-O-=SUB=-4-=/SUB=-/P(VDF-TFE) in the frequency range 100-7000 MHz

et al. 2022

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The article describes electromagnetic and microwave properties of the polymer composite with the lithium spinel ferrite inclusion of composition Li0.33Fe2.29Zn0.21Mn0.17O4 in the frequency range 100-7000 MHz. It is shown that samples with a mass fraction of ferrite 60, 80% have pronounced radio-absorbing properties, measured using the reflection coefficient on a metal plate (return losses). For a composite with 80% ferrite, the minimum return loss was -37.5 dB at 2.71 GHz with an absorption width at -10 dB of 3 GHz. High absorption characteristics are directly related to the use of ferroelectric polymer P(VDF-TFE) as a binder, which is expressed in the combined action of the absorption mechanisms of the magnetic and ferroelectric phases. Keywords: lithium ferrite, polymer composite, polyvinylidene fluoride, radio-absorbing material.

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Section: Resultssupporting

confidence: 75%

Electromagnetic properties of polymer composites Li-=SUB=-0.33-=/SUB=-Fe-=SUB=-2.29-=/SUB=-Zn-=SUB=-0.21-=/SUB=-Mn-=SUB=-0.17-=/SUB=-O-=SUB=-4-=/SUB=-/P(VDF-TFE) in the frequency range 100-7000 MHz

et al. 2022

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“…Excellent radar absorption properties can be obtained using ferroelectric polymers, i.e., PVDF and its copolymers [88]. For example, PVDF/nano-Mn0.8Zn0.2Cu0.2Fe1.8O4 ferrite films ~0.2 mm in thickness exhibit excellent radar absorption properties in the 12-18 GHz range, with a 6 GHz working bandwidth and −32 dB peak attenuation [89].…”

Section: Radar-absorbing Parameters Of Ferrites and Ferrite-polymer C...mentioning

confidence: 99%

“…The Ba(Zr-Ni)0.6Fe10.8O19/Fe3O4 composite filler synthesized by joint annealing in an argon gas atmosphere of separately obtained substituted hexaferrite and magnetite phases was studied [34]. The best radar absorption properties were obtained Excellent radar absorption properties can be obtained using ferroelectric polymers, i.e., PVDF and its copolymers [88]. For example, PVDF/nano-Mn 0.8 Zn 0.2 Cu 0.2 Fe 1.8 O 4 ferrite films ~0.2 mm in thickness exhibit excellent radar absorption properties in the 12-18 GHz range, with a 6 GHz working bandwidth and −32 dB peak attenuation [89].…”

Section: Radar-absorbing Parameters Of Ferrites and Ferrite-polymer C...mentioning

confidence: 99%

Radio-Absorbing Magnetic Polymer Composites Based on Spinel Ferrites: A Review

Kostishin,

Isaev,

Salogub

2024

Polymers

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Ferrite-containing polymer composites are of great interest for the development of radar-absorbing and -shielding materials (RAMs and RSMs). The main objective of RAM and RSM development is to achieve a combination of efficient electromagnetic wave (EMW) absorption methods with advantageous technological and mechanical properties as well as acceptable weight and dimensions in the final product. This work deals with composite RAMs and RSMs containing spinel-structured ferrites. These materials are chosen since they can act as efficient RAMs in the form of ceramic plates and as fillers for radar-absorbing polymer composites (RAC) for electromagnetic radiation (EMR). Combining ferrites with conducting fillers can broaden the working frequency range of composite RAMs due to the activation of various absorption mechanisms. Ferrite-containing composites are the most efficient materials that can be used as the working media of RAMs and RSMs due to a combination of excellent dielectric and magnetic properties of ferrites. This work contains a brief review of the main theoretical standpoints on EMR interaction with materials, a comparison between the radar absorption properties of ferrites and ferrite–polymer composites and analysis of some phenomenological aspects of the radar absorption mechanisms in those composites.

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“…Composites with a polymer matrix containing ferrites and semiconductors (graphene, metal nanoparticles) have marked radio absorption and radio screening properties induced by a combination of different absorption mechanisms: natural ferrimagnetic resonance (NFMR), domain-wall motion resonance (DWMR), eddy-current losses, repolarization losses, and multiplereflection losses [5,6]. Since the NFMR frequency of ferrite spinels lies in the radio range that coincides with the operating frequencies of civilian EMR emitters, it is believed that composites with ferrite inclusions should be efficient absorbers in the civilian sector [7][8][9][10][11][12]. In addition, the microstructure specifics of polymer-based magnetic composites may have a considerable effect on the absorption spectra: the size, the shape, and the concentration of magnetic and conducting composites may alter the type of frequency dispersion of permittivity and permeability and thus affect the frequency position of the absorption peak [13].…”

Section: Introductionmentioning

confidence: 99%

Radar absorbing properties of polyvinyl alcohol/Ni-Znferrite-spinel composite

et al. 2022

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The electromagnetic and radio-absorbing characteristics offerrite-polymer composites with conductive inclusions based on polyvinylalcohol are investigated. The Ni-Zn spinel ferrite powder of 2000NN gradewith composition Ni0.32Zn0.68Fe2O4 was used as filler. It is shown that theobtained composites are effective absorbers in the frequency range of 2-5 GHz with peak reflection loss less than ~20 dB. Through the analysis of thepermittivity spectra and permeability spectra, as well as the calculatedreflection loss spectra, critical factors of the electromagnetic waveabsorption in obtained composites are established. Keywords: polymer composite, radio absorption, nickel-zinc ferrite,polyvinyl alcohol\

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Synthesis and Property Study of Films of Microwave-Absorbing Composites Consisting of Mn0.5792Zn0.2597Fe2.1612O4 Inclusions and the –[(CH2–CH2)m–(CF2–CF2)n]k– Polymer Matrix

Cited by 7 publications

References 24 publications

Electromagnetic properties of polymer composites Li-=SUB=-0.33-=/SUB=-Fe-=SUB=-2.29-=/SUB=-Zn-=SUB=-0.21-=/SUB=-Mn-=SUB=-0.17-=/SUB=-O-=SUB=-4-=/SUB=-/P(VDF-TFE) in the frequency range 100-7000 MHz

Electromagnetic properties of polymer composites Li-=SUB=-0.33-=/SUB=-Fe-=SUB=-2.29-=/SUB=-Zn-=SUB=-0.21-=/SUB=-Mn-=SUB=-0.17-=/SUB=-O-=SUB=-4-=/SUB=-/P(VDF-TFE) in the frequency range 100-7000 MHz

Radio-Absorbing Magnetic Polymer Composites Based on Spinel Ferrites: A Review

Radar absorbing properties of polyvinyl alcohol/Ni-Znferrite-spinel composite

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