Effects of second order surface anisotropy in YIG sputtered onto GGG (1 0 0) oriented substrate

Oliveira, Alexandre Barbosa de; Chesman, C.; Rodrı́guez-Suárez, R. L.; Costa, Raphael Raniere de Oliveira; Silva, U.C.; Costa, Neymar Pereira da; Silva, B.G.; Sommer, R.L.; Bohn, F.; Corrêa, M.A.

doi:10.1016/j.jmmm.2018.08.039

Cited by 10 publications

(2 citation statements)

References 22 publications

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“…4(c), where the asymmetry in group velocities enlarges with decreasing thickness. The observed thickness dependence is in opposite to that of the surface anisotropy-induced nonreciprocity [37,44,45]. This observation indicates that the observed DMI is an interfacial effect.…”

mentioning

confidence: 97%

Chiral Spin-Wave Velocities Induced by All-Garnet Interfacial Dzyaloshinskii-Moriya Interaction in Ultrathin Yttrium Iron Garnet Films

et al. 2020

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Spin waves can probe the Dzyaloshinskii-Moriya interaction (DMI) which gives rise to topological spin textures, such as skyrmions. However, the DMI has not yet been reported in yttrium iron garnet (YIG) with arguably the lowest damping for spin waves. In this work, we experimentally evidence the interfacial DMI in a 7 nm-thick YIG film by measuring the nonreciprocal spin-wave propagation in terms of frequency, amplitude and most importantly group velocities using all electrical spin-wave spectroscopy. The velocities of propagating spin waves show chirality among three vectors, i.e. the film normal direction, applied field and spin-wave wavevector. By measuring the asymmetric group velocities, we extract a DMI constant of 16 µJ/m 2 which we independently confirm by Brillouin light scattering. Thickness-dependent measurements reveal that the DMI originates from the oxide interface between the YIG and garnet substrate. The interfacial DMI discovered in the ultrathin YIG films is of key importance for functional chiral magnonics as ultra-low spin-wave damping can be achieved. arXiv:1910.02599v2 [cond-mat.mtrl-sci]

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confidence: 97%

Chiral Spin-Wave Velocities Induced by All-Garnet Interfacial Dzyaloshinskii-Moriya Interaction in Ultrathin Yttrium Iron Garnet Films

et al. 2020

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“…For instance, in the traditional FMR experiment, a fixed frequency associated with the resonant cavity is taken to perform the measurements. The conventional FMR system enables us to obtain the absorption resonance curve, and consequently ∆H, as a function of field direction [14,15]. More sophisticated experiments carried out with a vector network analyzer (VNA) in turn allow the investigation of the FMR effect not just varying the angle and amplitude of the magnetic field, but also sweeping the probe frequency [15,16].…”

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confidence: 99%

Assessing the relaxation mechanisms contributions on magnetoimpedance effect in YIG/W bilayers

Santos¹,

Silva²,

Gamino³

et al. 2022

J. Phys. D: Appl. Phys.

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Damping parameter plays a key role in the magnetization dynamics of ferri/ferromagnetic materials with potential technological applications. Experimentally the damping parameter can be estimated from the linewidth of the ferromagnetic resonance experiment, which is altered by distinct mechanisms associated with extrinsic contributions, such as spin pumping and two-magnon scattering mechanisms. Here we perform a systematic investigation of the magnetization dynamics through magnetoimpedance eﬀect in Y5Fe3O12(tYIG)/W(100 nm) bilayers having tYIG between 25 and 125 nm. By modifying the YIG thickness, we explore the contributions of such extrinsic mechanisms to αeff. From the structural features, quasi-static magnetic properties, and ferromagnetic resonance results, we interpret our ﬁndings for the magnetization dynamics. Our results disclose that the bilayer structure allows us to explore the magnetoimpedance eﬀect in a wide range of frequency and magnetic ﬁelds, providing insights on the eﬀective damping parameter.

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Comparison of the catalytic performance of YIG garnets and Fe-containing oxides catalysts for oxidation of ethylbenzene

Carmo

Pinheiro

Oliveira

et al. 2021

Ceramics International

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Effects of second order surface anisotropy in YIG sputtered onto GGG (1 0 0) oriented substrate

Cited by 10 publications

References 22 publications

Chiral Spin-Wave Velocities Induced by All-Garnet Interfacial Dzyaloshinskii-Moriya Interaction in Ultrathin Yttrium Iron Garnet Films

Chiral Spin-Wave Velocities Induced by All-Garnet Interfacial Dzyaloshinskii-Moriya Interaction in Ultrathin Yttrium Iron Garnet Films

Assessing the relaxation mechanisms contributions on magnetoimpedance effect in YIG/W bilayers

Comparison of the catalytic performance of YIG garnets and Fe-containing oxides catalysts for oxidation of ethylbenzene

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Effects of second order surface anisotropy in YIG sputtered onto GGG (1 0 0) oriented substrate

Cited by 10 publications

References 22 publications

Chiral Spin-Wave Velocities Induced by All-Garnet Interfacial Dzyaloshinskii-Moriya Interaction in Ultrathin Yttrium Iron Garnet Films

Chiral Spin-Wave Velocities Induced by All-Garnet Interfacial Dzyaloshinskii-Moriya Interaction in Ultrathin Yttrium Iron Garnet Films

Assessing the relaxation mechanisms contributions on magnetoimpedance effect in YIG/W bilayers

Comparison of the catalytic performance of YIG garnets and Fe-containing oxides catalysts for oxidation of ethylbenzene

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Effects of second order surface anisotropy in YIG sputtered onto GGG (1 0 0) oriented substrate