Electromagnetic properties of zinc–nickel ferrites in the frequency range of 0.05–10 GHz

Винник, Д.А.; Живулин, В.Е.; Sherstyuk, D.P.; Starikov, A.Yu.; Zezyulina, Polina A.; Gudkova, S.A.; Жеребцов, Д. А.; Rozanov, Konstantin N.; Труханов, С.В.; Astapovich, K.A.; Турченко, В. А.; Sombra, A. S. B.; Zhou, Di; Jotania, Rajshree B.; Singh, Charanjeet

doi:10.1016/j.mtchem.2021.100460

Cited by 58 publications

(30 citation statements)

References 65 publications

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“…An amount of 10 mg of PVA was dissolved in 200 mL of distilled water with constant stirring with a magnetic stirrer at 70 • C to obtain a clear solution. Various concentrations (2,4,6,8, and 10 wt.%) of MZFA were added to the PVA solution and stirred with a magnetic stirrer at 70 • C for 20 min to obtain a completely homogeneous solution. Then, the mixture of PVA/MZFA was poured into Petri dishes and dried at room temperature.…”

Section: Synthesis Of Pva/mzfa Nanocomposite Filmsmentioning

confidence: 99%

“…Nanomaterials attract a lot of attention from researchers and developers due to their anomalous optical, thermal, electrical, and magnetic properties, and significant differences from their bulky counterparts [1]. Spinel ferrites are a hybrid functional material with the general formula MFe 2 O 4 (M = Mg 2+ , Co 2+ , Mn 2+ , Ni 2+ , Zn 2+ ) [2][3][4]. Ferrites are essential for many recent technological designs of electrical, magnetic, and microwave devices [5][6][7].…”

Section: Introductionmentioning

confidence: 99%

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Combined Effect of Microstructure, Surface Energy, and Adhesion Force on the Friction of PVA/Ferrite Spinel Nanocomposites

Darwish

Zubar

Kanafyev³

et al. 2022

Nanomaterials

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Nanocomposite films based on spinel ferrite (Mg0.8Zn0.2Fe1.5Al0.5O4) in a PVA matrix were obtained. An increase in the spinel concentration to 10 wt.% caused an avalanche-like rise in roughness due to the formation of nanoparticle agglomerates. The lateral mode of atomic force microscopy (AFM) allowed us to trace the agglomeration dynamics. An unexpected result was that the composite with 6 wt.% of filler had a low friction coefficient in comparison with similar composites due to the successfully combined effects of low roughness and surface energy. The friction coefficient decreased to 0.07 when the friction coefficient of pure PVA was 0.72. A specially developed method for measuring nano-objects’ surface energy using AFM made it possible to explain the anomalous nature of the change in tribological characteristics.

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Section: Synthesis Of Pva/mzfa Nanocomposite Filmsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Combined Effect of Microstructure, Surface Energy, and Adhesion Force on the Friction of PVA/Ferrite Spinel Nanocomposites

Darwish

Zubar

Kanafyev³

et al. 2022

Nanomaterials

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“…With respect to the electrical performance of insulation materials, low-loss Df (dissipation factor or loss tangent) and Dk (dielectric constant or permittivity) materials are highly preferred for 5G applications [ 10 , 11 ]. The recent results of the preparation and investigation of substituted ferrites, promising for microwave applications, have been published in [ 12 , 13 ]. Additionally, the combination of different compounds with excellent electronic properties leads to new composite materials which have earned great technological interest in recent years.…”

Section: Introductionmentioning

confidence: 99%

Characterization of Low-Loss Dielectric Materials for High-Speed and High-Frequency Applications

Lee

Lau

et al. 2022

Materials

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In this study, the Df (dissipation factor or loss tangent) and Dk (dielectric constant or permittivity) of the low-loss dielectric material from three different vendors are measured by the Fabry–Perot open resonator (FPOR) technique. Emphasis is placed on the sample preparation, data collection, and the comparison with the data sheet values provided from vendors. A coplanar waveguide with ground (CPWG) test vehicle with one of these raw dielectric materials (vendor 1) is designed (through Polar and simulation) and fabricated. The impedance of the test vehicle is measured by TDR (time-domain reflectometer), and the effective Dk of the test vehicle is calculated by the real cross-section of the metal line width, spacing, and thickness of the test vehicle and a closed-form equation. In parallel, the insertion loss and return loss are measured with the VNA (vector network analyzer) of the test vehicle. Finally, the measurement and simulation results are correlated. Some recommendations on the low-loss dielectric materials of the Dk and Df are also provided.

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“…This is one of the higher values of power exponent of AC conductivity which has been detected in the respective frequency range to the best of our knowledge. On the other hand, the higher frequency range is an interesting region for the study of promising materials for microwave applications [32,33]. The combination of different compounds which have excellent microwave properties leads to new composite materials which have earned great technological interest in recent years, while the addition of a second phase can significantly improve the electronic properties of the resulting composite material [34,35].…”

Section: Introductionmentioning

confidence: 99%

Exploring the High Frequencies AC Conductivity Response in Disordered Materials by Using the Damped Harmonic Oscillator

Tsonos

2022

J. Compos. Sci.

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The AC conductivity response of disordered materials follows a universal power law of the form σ′(ω)∝ωn at the low frequency regime, with the power exponent values in the range 0 < n < 1. At the high frequency regime, in many experimental data of different disordered materials, superlinear values of the power exponent n were observed. The observed superlinear values of the power exponent are usually within 1<n<2, but in some cases values n>2 were detected. The present work is based on the definitions of electromagnetic theory as well as the Havriliak–Negami equation and the damped harmonic oscillator equation, which are widely used for the description of dielectric relaxation mechanisms and vibration modes in the THz frequency region, respectively. This work focuses mainly on investigating the parameters that affect the power exponent and the range of possible n values.

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Electromagnetic properties of zinc–nickel ferrites in the frequency range of 0.05–10 GHz

Cited by 58 publications

References 65 publications

Combined Effect of Microstructure, Surface Energy, and Adhesion Force on the Friction of PVA/Ferrite Spinel Nanocomposites

Combined Effect of Microstructure, Surface Energy, and Adhesion Force on the Friction of PVA/Ferrite Spinel Nanocomposites

Characterization of Low-Loss Dielectric Materials for High-Speed and High-Frequency Applications

Exploring the High Frequencies AC Conductivity Response in Disordered Materials by Using the Damped Harmonic Oscillator

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