Magnonic spin-wave modes in CoFeB antidot lattices

Ulrichs, Henning; Lenk, Benjamin; Münzenberg, Markus

doi:10.1063/1.3483136

Cited by 87 publications

(57 citation statements)

References 23 publications

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“…4 Ferromagnetic resonance measurements evidenced a small linewidth for CoFeB. [5][6][7][8][9][10] For magnonic applications, 11,12 electrically generated spin waves would be very interesting.…”

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High propagating velocity of spin waves and temperature dependent damping in a CoFeB thin film

Yu¹,

Huber²,

Schwarze³

et al. 2012

Appl. Phys. Lett.

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Spin wave propagation in a magnetron-sputtered CoFeB thin film is investigated. We apply both in-plane and out-of-plane magnetic fields. At room temperature, we find velocities of up to 25 and 3.5 km/s, respectively. These values are much larger compared to a thin permalloy film. Analyzing the resonance linewidth, we obtain an intrinsic Gilbert damping parameter of about 0.007 at room temperature. It increases to 0.023 at 5 K. CoFeB is a promising material for magnonic devices supporting fast propagating spin waves. V C 2012 American Institute of Physics.

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confidence: 99%

High propagating velocity of spin waves and temperature dependent damping in a CoFeB thin film

Yu¹,

Huber²,

Schwarze³

et al. 2012

Appl. Phys. Lett.

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“…More detailed pulsed-field experiments have revealed that, in micro-scale and sub-micron sized samples, the coherence of spin precession somewhat deteriorates because of shape anisotropy effects, leading to the appearance of multi-mode spin-wave excitations. [18][19][20][21][22][23][24] Nevertheless, even in this case, the coherent suppression of ringing has been demonstrated. 25 From a different point of view, spin ringing with a large lifetime in a material with high magnetic Q-factor like yttrium iron garnet (YIG) can be more of a benefit than a problem.…”

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confidence: 85%

Synthesis and processing of pseudo noise signals by spin precession in Y3 Fe5O12 films

Kolokoltsev

Ordóñez‐Romero

Qureshi

2011

Journal of Applied Physics

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Fe 3 O 4 + δ films prepared by "one-liquid" spin spray ferrite plating for gigahertz-range noise suppressors J. Appl. Phys. 99, 08M916 (2006); 10.1063/1.2177394 High power ferromagnetic resonance and spin wave instability processes in Permalloy thin films J. Appl. Phys. 96, 1572 (2004); 10.1063/1.1763996 Spin-wave excitation in ultrathin Co and Fe films on Cu(001) by spin-polarized electron energy loss spectroscopy (invited)

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“…[16] Over the last decade several works have been reported on the control of SW dynamics in MAL arrays by varying the antidot architecture. [18][19][20][21][22][23][24] Further the most desired characteristics of a material for magnonic based applications are low magnetic damping, high saturation magnetization, high curie temperature, long spin wave propagation distance, etc. [1] Among various materials reported till date, Yttrium Iron garnet (YIG) possesses remarkably low magnetic damping of ∼0.0002 and high SW propagation distance of ∼22.5 µm.…”

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Tunability of Domain Structure and Magnonic Spectra in Antidot Arrays of Heusler Alloy

et al. 2019

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Materials suitable for magnonic crystals demand low magnetic damping and long spin wave (SW) propagation distance. In this context Co based Heusler compounds are ideal candidates for magnonic based applications. In this work, antidot arrays (with different shapes) of epitaxial Co2Fe0.4Mn0.6Si (CFMS) Heusler alloy thin films have been prepared using e-beam lithography and sputtering technique. Magneto-optic Kerr effect and ferromagnetic resonance analysis have confirmed the presence of dominant cubic and moderate uniaxial magnetic anisotropies in the thin films. Domain imaging via x-ray photoemission electron microscopy on the antidot arrays reveals chain like switching or correlated bigger domains for different shape of the antidots. Time-resolved MOKE microscopy has been performed to study the precessional dynamics and magnonic modes of the antidots with different shapes. We show that the optically induced spin-wave spectra in such antidot arrays can be tuned by changing the shape of the holes. The variation in internal field profiles, pinning energy barrier, and anisotropy modifies the spin-wave spectra dramatically within the antidot arrays with different shapes. We further show that by combining the magnetocrystalline anisotropy with the shape anisotropy, an extra degree of freedom can be achieved to control the magnonic modes in such antidot lattices. arXiv:1907.02746v1 [cond-mat.mtrl-sci]

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Magnonic spin-wave modes in CoFeB antidot lattices

Cited by 87 publications

References 23 publications

High propagating velocity of spin waves and temperature dependent damping in a CoFeB thin film

High propagating velocity of spin waves and temperature dependent damping in a CoFeB thin film

Synthesis and processing of pseudo noise signals by spin precession in Y3 Fe5O12 films

Tunability of Domain Structure and Magnonic Spectra in Antidot Arrays of Heusler Alloy

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