Calculation of the spectral characteristics of an acoustic resonator containing layered multiferroic structure

Polzikova, N. I.; Raevskiǐ, A. O.; Goremykina, Anna

doi:10.1134/s1064226912120066

Cited by 14 publications

(15 citation statements)

References 9 publications

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“…However, the amplitudes of the partial SW with Q SW I, II considerably exceed those for the SW with Q AW I, II . 17,28 Conversely, the magnitude of u is determined by the partial waves with Q AW I, II . It may be assumed that out of the MER region an effective magnetic field h ME (f n )∼δS n ∂u/∂x, with δS n ∼A n =1/ (F 2 -F n 2 ) linearly excites magnetization m(x,n) = A n m k (x)I k P k as a superposition of standing SW eigenmodes m k (x) with wavenumbers Q SW k =πk/ (dq 0 ).…”

Section: Resultsmentioning

confidence: 99%

“…[16][17][18][19][20] The frequency width of MER region is determined as a minimal repulsion of coupled ME waves branches. In the MER region AW energy effectively transfers to the magnetic system which leads, first, to a decrease in Q-factor of the resonances and their frequency shifts and further to complete disappearance of the regular resonance structure.…”

Section: Resultsmentioning

confidence: 99%

“…In this geometry, the transverse BAW electrically excited and detected by the transducer drives magnetization oscillations in YIG films. [16][17][18][19][20] For the best ME interaction, a magnetic field H is applied also in the [110] direction. 20 These AD oscillations establish a spin current j s x from YIG into the Pt strip perpendicular to the interface.…”

Section: Hbar Structure and Experimental Geometrymentioning

confidence: 99%

“…More recently, the generation of pure spin current from YIG to Pt detected by inverse spin Hall effect (ISHE) under magnetic dynamics excitation in a composite magnetoelectric high overtone bulk acoustic wave resonator (HBAR) [16][17][18][19][20] was demonstrated for the first time. 21 According to our estimates, the excitation of AD magnetic oscillations under double resonance conditions (magnetoelastic resonance (MER) in a YIG film and a high-quality BAW resonance of the whole structure) sufficiently exceeds surface AW method efficiency.…”

Section: Introductionmentioning

confidence: 99%

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Frequency and magnetic field mapping of magnetoelastic spin pumping in high overtone bulk acoustic wave resonator

et al. 2018

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We report on the first observation of microvolt-scale inverse spin Hall effect (ISHE) dc voltage driven by an acoustic spin pumping (ASP) in a bulk acoustic wave (BAW) resonator formed by a Al-ZnO-Al-YIG(1)-GGG-YIG(2)-Pt structure. When 2 mW power is applied to an Al-ZnO-Al transducer, the voltage VISHE ∼ 4 μV in the Pt film is observed as a result of resonant ASP from YIG(2) to Pt in the area ∼ 170 μm. The results of frequency and magnetic field mapping of VISHE(f,H) together with reflectivity of the resonator show an obvious agreement between the positions of the voltage maxima and BAW resonance frequencies fn(H) on the (f, H) plane. At the same time a significant asymmetry of the VISHE(fn(H)) value in reference to the magnetoelastic resonance (MER) line fMER(H) position is revealed, which is explained by asymmetry of the magnetoelastic waves dispersion law.

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Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Section: Hbar Structure and Experimental Geometrymentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Frequency and magnetic field mapping of magnetoelastic spin pumping in high overtone bulk acoustic wave resonator

et al. 2018

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“…In the case of precessional (resonant) switching, two features are necessary: sizable magnetoacoustic coupling (to trigger precession), and a highly nonlinear system (to force wide, noncircular precession needed for magnetization reversal). The first point has already been addressed in ferromagnetic metals, since the 1960s by ac electrical excitation of strain waves [7][8][9][10][11][12], and more recently by optical excitation of acoustic pulses [13,14]. The electrical approach consists in the radio-frequency (rf) excitation of a piezoelectric emitter.…”

Section: Introductionmentioning

confidence: 99%

Surface-acoustic-wave-driven ferromagnetic resonance in (Ga,Mn)(As,P) epilayers

et al. 2014

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International audienceSurface acoustic waves (SAW) were generated on a thin layer of the ferromagnetic semiconductor (Ga,Mn)(As,P). The out-of-plane uniaxial magnetic anisotropy of this dilute magnetic semiconductor is very sensitive to the strain of the layer, making it an ideal test material for the dynamic control of magnetization via magnetostriction. The amplitude and phase of the transmitted SAW during magnetic field sweeps showed a clear resonant behavior at a field close to the one calculated to give a precession frequency equal to the SAW frequency. A resonance was observed from 5 to 85 K, just below the Curie temperature of the layer. A full analytical treatment of the coupled magnetization/acoustic dynamics showed that the magnetostrictive coupling modifies the elastic constants of the material and accordingly the wave-vector solution to the elastic wave equation. The shape and position of the resonance were well reproduced by the calculations, in particular the fact that velocity (phase) variations resonated at lower fields than the acoustic attenuation variations. We suggest one reinterpret SAW-driven ferromagnetic resonance as a form of resonant, dynamic, delta-E effect, a concept usually reserved for static magnetoelastic phenomena

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Acoustic excitation and electrical detection of spin waves and spin currents in hypersonic bulk waves resonator with YIG/Pt system

Polzikova

Alekseev

Luzanov

et al. 2019

Journal of Magnetism and Magnetic Materials

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We report on the self-consisted semi-analytical theory of magnetoelastic excitation and electrical detection of spin waves and spin currents in hypersonic bulk acoustic waves resonator with ZnO-GGG-YIG/Pt layered structure. Electrical detection of acoustically driven spin waves occurs due to spin pumping from YIG to Pt and inverse spin Hall (ISHE) effect in Pt as well as due to electrical response of ZnO piezotransducer. The frequency-field dependences of the resonator frequencies and ISHE voltage UISHE are correlated with experimental ones observed previously.Their fitting allows to determine some magnetic and magnetoelastic parameters of YIG. The analysis of the YIG film thickness influence on UISHE gives the possibility to find the optimal thickness for maximal UISHE value.

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Calculation of the spectral characteristics of an acoustic resonator containing layered multiferroic structure

Cited by 14 publications

References 9 publications

Frequency and magnetic field mapping of magnetoelastic spin pumping in high overtone bulk acoustic wave resonator

Frequency and magnetic field mapping of magnetoelastic spin pumping in high overtone bulk acoustic wave resonator

Surface-acoustic-wave-driven ferromagnetic resonance in (Ga,Mn)(As,P) epilayers

Acoustic excitation and electrical detection of spin waves and spin currents in hypersonic bulk waves resonator with YIG/Pt system

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