Dual Tuning of Doubly Hybridized Spin-Electromagnetic Waves in All-Thin-Film Multiferroic Multilayers

Никитин, А. А.; Vitko, V. V.; Никитин, А. А.; Кондрашов, А. В.; Устинов, А. Б.; Семенов, А. А.; Lähderanta, E.

doi:10.1109/tmag.2017.2714841

Cited by 4 publications

(4 citation statements)

References 23 publications

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“…A further reduction in the control voltage can be achieved by utilising the all‐thin‐film ferrite–ferroelectric–ferrite structures. As was shown in our previous work, the efficiency of electric tuning of wave spectra in such structures is increased by reducing the thickness of the intermediate ferroelectric layer [33], as well as by employing the phenomenon of the double hybridisation of the pure electromagnetic mode and two pure surface spin‐wave modes [42].…”

Section: Resultsmentioning

confidence: 99%

“…It has been recently shown that the regular waveguides made of the ferrite–ferroelectric–ferrite three‐layer structures enrich the properties of multiferroics because of a magneto‐dipole interaction between spin‐wave modes in the closely spaced ferrite films [30, 42–44]. These structures demonstrate an enhanced voltage‐controlled phase shift of SEW [45].…”

Section: Introductionmentioning

confidence: 99%

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Electromagnonic crystals based on ferrite–ferroelectric–ferrite multilayers

Никитин

Mylnikov

et al. 2020

IET Microwaves, Antennas & Propagation

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Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Electromagnonic crystals based on ferrite–ferroelectric–ferrite multilayers

Никитин

Mylnikov

et al. 2020

IET Microwaves, Antennas & Propagation

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“…Namely, thin film multiferroics allows one to reduce the control voltage needed for well-pronounced electric field control of the wave propagation [32][33][34]. It has been recently shown that regular waveguides made of the ferrite-ferroelectric-ferrite three-layer structures enrich the properties of multiferroics because of a hybridization among one electromagnetic mode and two spin-wave modes in the closely spaced ferrite films [35][36][37][38][39]. In this case, SEW spectra are formed as the result of the two types of coupling: (i) electromagnetic interaction between spin and electromagnetic modes, and (ii) magnetodipole interaction between two spin waves modes.…”

Section: Introductionmentioning

confidence: 99%

Dynamic electromagnonic crystals based on ferrite-ferroelectric thin film multilayers

Nikitin,

Kuznetsov,

van Dijken

et al. 2024

Phys. Rev. B

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Magnons, the quanta of the oscillations of localized electron spins, are a powerful tool for information transport and processing of microwave signals. Owing to the challenge of energy efficient spin-wave control on small time-and space scales, dynamic magnonic crystals have been proposed. Their distinct feature is the possibility to toggle on and off the spatial periodicity of the magnetic waveguide that allows one to realize the unusual signal processing functions. The miniaturization of magnonic circuits, reduction in energy consumption, and fast operation are important possibilities of these artificial crystals. These can be achieved in ferrite-ferroelectric (multiferroic) heterostructures, where strong coupling of magnons and microwave photons constitutes quasiparticles called electromagnons. Using both a theoretical approach and microwave measurements, we report on successful dynamic control of electromagnonic band structures in artificial thin film crystals via application of a voltage to the grid electrode located on a ferroelectric film.A promising functionality of the proposed waveguiding structures arises from two major factors: (i) low energy consumptions due to the thin ferroelectric layer, and (ii) pronounced rejection bands caused by a gradual change of the dielectric permittivity.

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“…These structures may be divided into the two major families. The first one is the ferriteferroelectric-ferrite multilayers [25]. The main advantage of these structures is an existence of the magneto-dipole interaction between the ferrite films separated by a thin ferroelectric film.…”

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confidence: 99%

Dispersion Characteristics of Spin-Electromagnetic Waves in Planar Multiferroic Structures with Coplanar Transmission Line

Никитин

Устинов

Никитин

et al. 2020

Izv. vysš. učebn. zaved. Ross., Radioèlektron.

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Introduction. The distinctive feature of a coplanar transmission line with thin ferrite and ferroelectric films is the absence of undesirable irregularities in dispersion for relatively low frequencies when the wavelength approaches the thickness of ferroelectric layer, in contrast to the open ferrite-ferroelectric wave-guiding structure without metallization. Aim. The purpose of this paper is twofold: (i) to develop a theory of the wave spectra in the multiferroic structures based on the coplanar lines; (ii) using this theory to find ways to enhance the electric tuning range. Materials and methods. The dispersion relation for spin-electromagnetic waves was derived through analytical solution of the full set of the Maxwell's equations utilizing a method of approximate boundary conditions. Results. A theory of spin-electromagnetic wave spectrum has been developed for the thin-film ferriteferroelectric structure based on a coplanar transmission line. According to this theory, dispersion characteristics of the spin-electromagnetic waves were described and analyzed for different parameters of the structure. The obtained results show that the investigated structure demonstrates a dual electric and magnetic field tunability of wave spectra. Its efficiency increases with an increase in the thicknesses of the ferrite and ferroelectric films and with a decrease in the width of the central metal strip. Conclusion.The distinctive features of the proposed coplanar waveguides are the thin-film planar topology and dual tunability of the wave spectra. All these advantages make the proposed structures perspective for development of new microwave devices.

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Dual Tuning of Doubly Hybridized Spin-Electromagnetic Waves in All-Thin-Film Multiferroic Multilayers

Cited by 4 publications

References 23 publications

Electromagnonic crystals based on ferrite–ferroelectric–ferrite multilayers

Electromagnonic crystals based on ferrite–ferroelectric–ferrite multilayers

Dynamic electromagnonic crystals based on ferrite-ferroelectric thin film multilayers

Dispersion Characteristics of Spin-Electromagnetic Waves in Planar Multiferroic Structures with Coplanar Transmission Line

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