Magnetic Antiresonance in Nanocomposite Materials

Ринкевич, А. Б.; Перов, Д. В.; Nemytova, Olga V.

doi:10.1002/9781119241966.ch2

Cited by 1 publication

(4 citation statements)

References 23 publications

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Section: Simulation Principles Of the Adaptive Nanomaterialsmentioning

confidence: 99%

“…The ferromagnetic antiresonance occurs when the real part of the magnetic effective permeability for the composite material vanishes: µ eff = 0 and the imaginary part µ eff has low a value (an accentuate propagation maximum occurs [4]). The ferromagnetic antiresonance pulsation, ω F M AR is given by [4,6]: • x = b, where the solver sets the source field vector b to zero. S andT matrices depend on the geometry and the mesh defined for the finite element method (FEM); x is the electric field vector solution; k 0 is the free-space wave number corresponding to that x mode and b is the value of the source (field vector) defined for the problem.…”

Section: Simulation Principles Of the Adaptive Nanomaterialsmentioning

confidence: 99%

“…The 3D photonic metamaterials with artificial opals are used in the bottom up technologies of micromachining for new devices manufacturing, like MEMS applications, optical modulators; optical sensing, miniature antennae, novel waveguides, subwavelength imaging, nanoscale photolithography, photonic circuits, etc. [1][2][3][4][5]. The inverse opal metamaterials are also used for the energy storage and communications, in solar cell technology, for electrochemical energy storage, at supercapacitors, fuel cells, catalysts [1,4].…”

Section: Introductionmentioning

confidence: 99%

“…[1][2][3][4][5]. The inverse opal metamaterials are also used for the energy storage and communications, in solar cell technology, for electrochemical energy storage, at supercapacitors, fuel cells, catalysts [1,4]. Adaptive nanostructured metamaterial structures are difficult to be realized in practice and our study is focused on the design optimization, using and describing of the new phenomena in order to synthesizing the metadevices.…”

Section: Introductionmentioning

confidence: 99%

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Properties Prescribing and Control of Direct and Inverse Opal Metamaterials Doped with Spinels, Used for Mems

Ionescu

Kovaci

2019

Acta Phys. Pol. A

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Properties prescribing and control of the photonic metamaterials operating in microwave fields represents the main task of our study. Magnetic-dielectric composites of opal (SiO2 matrices or similar), with insertions of ferrite spinels in the inter-sphere voids (5 ÷ 60 nm inclusions, 3-7 vol.%) with insular random/periodic distribution have been considered. Samples have been analyzed by structural simulation, placed inside a rectangular waveguide, mode T E10, at frequencies of 20÷40 GHz, for determining the resonance and antiresonances of the electromagnetic quantities that describe the material behavior. Variations of these quantities have been obtained by changing the structural parameters of the samples and optimal sets of values have been determined for each composite. The domains above the resonant/antiresonant frequency, in which the effective permittivity, respectively permeability are negative have been controlled in order to obtain a wider propagation band. A structure with periodic regular distribution of the inclusions was studied, realized by introducing pre-polarization periodical UV fields (λ = 200 nm), 2D applied (in cross). Particles molecular coating was applied for maintaining the inclusion positions. The propagation band became tunable by ferrite control and we report a band increasing of about 40% to 200%, depending on the ions nature in the ferrite and influenced by the structure capacity of interacting with the microwave field.

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Section: Simulation Principles Of the Adaptive Nanomaterialsmentioning

confidence: 99%