Magnetic and Radio-Absorbing Properties of Polycrystalline Li0.33Fe2.29Zn0.21Mn0.17O4 Spinel Ferrite

Isaev, I. M.; Костишин, В. Г.; Коровушкин, В. В.; Салогуб, Д. В.; Shakirzyanov, R. I.; Timofeev, A.; Mironovich, A. Yu.

doi:10.1134/s1063784221090085

Cited by 9 publications

(7 citation statements)

References 23 publications

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“…By and large, since Ni-Zn is quite a good dielectric, it does not exhibit large dielectric loss in the MHz and GHz regions. The same is true for the Li-Mn-Zn ferrites, but better impedance-matching conditions are provided for the minimum R l of −22 dB at a higher frequency than for the Ni-Zn ferrite (1.34 GHz) and a 2 GHz absorption bandwidth [57]. The good radar absorption properties were also observed for the Li-Zn ferrites with CuO and MgO additions.…”

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

confidence: 63%

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

confidence: 63%

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

Kostishin,

Isaev,

Salogub

2024

Polymers

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“…Copolymer of polyvinylidenfluoride (F2M brand) -[(CF 2 -CH 2 ) n -(CF 2 -CF 2 ) m ] k− with ratio of monomers in circuit of n = 96, m = 4 and ferrite-spinel with chemical composition of Li 0.33 Fe 2.29 Zn 0.21 Mn 0.17 O 4 were used as initial materials. Ferrite ceramics production was described earlier in study [19]. Powder size was < 45 µm, that allowed to obtain the homogeneous mechanical mixture in a mortar.…”

Section: Experimental Partmentioning

confidence: 99%

“…Earlier in [19] it was shown that Li-Mn-Zn ferrite with chemical composition of Li 0.33 Fe 2.29 Zn 0.21 Mn 0.17 O 4 is characterized as radiation absorbing material within frequency range of 0.05−7 GHz. Coefficient of reflection on a metal plate for samples with sintering temperature of 1050−1100 • C was −22.52 dB at frequency of 1.34 GHz.…”

Section: Introductionmentioning

confidence: 99%

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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“…Andreev et al discovered that incorporating 51.0 mol% Fe 2 O 3 can elevate the magnetic permeability of Ni-Zn ferrite to 1200, enabling ultra-high electromagnetic parameters for superior P-band absorption performance [ 8 ]. Igor Isaev et al synthesized [ 9 ] Li 0.33 Fe 2.29 Zn 0.21 Mn 0.17 O 4 spinel ferrite using ceramic technology, which can effectively absorb electromagnetic radiation in the frequency range of 0.05–7.0 GHz. However, due to increasingly intricate synthesis processes and stringent preparation condition controls, the application scale-up potential for these magnetic materials used in the P-band remains limited [ 10 , 11 ].…”

Section: Introductionmentioning

confidence: 99%

Ultra-Thin and Broadband P-Band Metamaterial Absorber Based on Carbonyl Iron Powder Composites

Zhou,

Chen,

et al. 2024

Materials

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The field of P-band (0.3–1 GHz) absorption has witnessed rapid development in metamaterial absorbers due to their exceptional designability and the absence of restrictions imposed by the one-fourth wavelength rule. In this study, we combined carbonyl iron powder (CIP) composites with a periodic structure composed of metal capacitive patterns and employed a genetic algorithm (GA) to optimize the electromagnetic parameters of the CIP substrate. By selecting the appropriate shape and material for the units of pattern based on transmission line theory, as well as regulating relevant structural parameters, we successfully designed an ultra-thin broadband metamaterial absorber for the P-band. Experimental results demonstrate that within the range of 0.3–0.85 GHz, the reflection loss of our absorber remains below −5 dB, with a maximum value of −9.54 dB occurring at 0.45 GHz. Remarkably, this absorber possesses a thickness equivalent to only 1/293 of its working wavelength. Then, we conducted analyses on electric field distribution, magnetic field distribution, and energy loss density. Our findings suggest that high-performance absorption in metamaterials can be attributed to λ/4 resonant or coupling effects between structural units or diffraction phenomena. This absorber offers several advantages, including broad low-frequency absorption capability, ultra-thin profile, and convenient fabrication process, thus providing valuable theoretical insights for designing metamaterial structures.

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Magnetic and Radio-Absorbing Properties of Polycrystalline Li0.33Fe2.29Zn0.21Mn0.17O4 Spinel Ferrite

Cited by 9 publications

References 23 publications

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

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

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

Ultra-Thin and Broadband P-Band Metamaterial Absorber Based on Carbonyl Iron Powder Composites

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