Electromagnonic crystals based on ferrite–ferroelectric–ferrite multilayers

Никитин, А. А.; Никитин, А. А.; Mylnikov, I. L.; Устинов, А. Б.; Kalinikos, B. A.

doi:10.1049/iet-map.2020.0162

Cited by 7 publications

(3 citation statements)

References 47 publications

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“…At first step, the dispersion characteristics were found for SW propagating in the regular sections of the bilayer structure composed of the thin-or thick-YIG film. At the second step, the MC transmission characteristics and dependences of the group delay time were calculated by the transfer-matrix method [26,43]. Results of the theoretical analysis are shown in Fig.…”

Section: (A) Microwave Measurements Of a Regular Structure Composed Of The Yig-vo2 Bilayermentioning

confidence: 99%

“…Various types of the dynamic MCs are developed pursuing miniaturization of magnonic devices, tunability of their operation bands as well as reduction of switching time between ON and OFF states. Moreover, an intensive development of magnonics has lighted out perspectives of novel hybrid structures, where the MCs are combined with superconducting [20], ferroelectric [18,[21][22][23][24][25][26], and magnetic media [27,28].…”

Section: Introductionmentioning

confidence: 99%

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Metal–insulator switching of vanadium dioxide for controlling spin-wave dynamics in magnonic crystals

Никитин

Устинов

et al. 2020

Journal of Applied Physics

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The present work focuses on the effect of vanadium dioxide (VO2) films exhibiting a metal-insulator transition (MIT) on performance characteristics of the magnetic multilayers. It has been shown that the MIT provides a novel mechanism for controlling the microwave spin-wave dynamics in the yttrium-iron garnet (YIG) films. In particular, the low and high levels of microwave attenuation of spin waves transmitted through the YIG-VO2 bilayer has been observed due to a variation of the VO2 conductivity within a narrow temperature range. This effect has been utilized to realize fully reconfigurable magnonic crystals composed of the thickness-modulated YIG and regular VO2 films. Promising functionality of the proposed waveguiding structures arises from a controllability of wave intensity, which provides altering of the frequency response from an original band structure to a full rejection of spin waves.Numerical simulations taking into account both the YIG-film saturation magnetization and the VO2-film conductivity have confirmed the experimentally observed spin-wave dynamics. An interest in ferrite-VO2 bilayers arises not only from possible practical applications, but also from a variety of fundamental scientific problems devoted to physics of wave phenomena in planar thin-film magnetic multilayers.

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Section: (A) Microwave Measurements Of a Regular Structure Composed Of The Yig-vo2 Bilayermentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Metal–insulator switching of vanadium dioxide for controlling spin-wave dynamics in magnonic crystals

Никитин

Устинов

et al. 2020

Journal of Applied Physics

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“…A decrease in the dielectric permittivity can be considered as a reduction in effective spatial distance between the magnetic films, leading to an increase in the coupling of spin-wave modes in the magnetic films. This topic has special potential considering recent theoretical and experimental progress that links the wave dynamics of thin film structures to the static electromagnonic band formation [40].…”

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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