Tuning the Scattering Parameters of Magnetic Nanowire Arrays Near the Antiresonance at Photonic Frequencies

Makeeva, G. S.; Pardavi‐Horváth, M.; Golovanov, O. A.

doi:10.1109/tmag.2009.2023612

Cited by 9 publications

(8 citation statements)

References 5 publications

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“…The age of nanotechnology therefore sets an intriguing quest for additional benefits to be gained by structuring natural magnetic materials into so called magnonic metamaterials, in which the frequency and strength of resonances based on spin waves (magnons) 8 are determined by the geometry and magnetization configuration of meta-atoms. Spin waves can have frequencies of up to hundreds of GHz (in the exchange dominated regime) [6][7][8][9] and have already been shown to play an important role in the high frequency magnetic response of composites [10][11][12][13][14] . Moreover, in view of the rapid advances in the field of magnonics 9,15,16, , which in particular promises devices employing propagating spin waves, the appropriate design of magnonic metamaterials with properties defined with respect to propagating spin waves rather than electromagnetic waves acquires an independent and significant importance.…”

Section: Introductionmentioning

confidence: 99%

Magnonic Metamaterials

Kruglyak¹,

Dvornik²,

Mikhaylovskiy³

et al. 2012

Metamaterial

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Section: Introductionmentioning

confidence: 99%

Magnonic Metamaterials

Kruglyak¹,

Dvornik²,

Mikhaylovskiy³

et al. 2012

Metamaterial

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“…The EMW having a wave vector and fields , , is incident on a 2-D array of ferromagnetic metallic nanowires, biased by a magnetic field . The wire axis is , wire diameter , length ; periodicity , , as in [2]. The configuration is shown in Fig.…”

Section: Results Of Numerical Modeling and Discussionmentioning

confidence: 99%

“…In addition, ferromagnetic resonance and antiresonance can be realized up to photonic frequencies as possible means for tuning spectral selectivity. In our previous work [2], we numerically simulated the scattering of EM waves (EMW) on 2-D periodic arrays of ferromagnetic nanowires, magnetized along the axis of nanowires. The existence of ferromagnetic resonance (FMR) and antiresonance (FMAR), depending on the wire diameter, was demonstrated.…”

Section: Introductionmentioning

confidence: 99%

Spin-Wave Resonances Affected by Skin-Effect in Conducting Magnetic Nanowire Arrays at Terahertz Frequencies

2011

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The properties of localized standing spin wave (SW) resonances are investigated numerically for a regular 2-D array of 10 nm diameter, 300 nm long metallic (iron) nanowires, magnetized at different orientations of the bias magnetic field 0 with respect to the wire axis. At 30 THz the penetration depth of the electromagnetic (EM) waves can be close to the diameter of the nanowires, leading to interesting resonance effects as a result of the inhomogeneous magnetization distribution across the nanowire diameter. The mathematical model considers the metallic character of the wires and the exchange interactions between the wires, when solving Maxwell equations simultaneously with the Landau-Lifshitz equation for the magnetization. The transmission coefficients T 21 of TEM waves through arrays with different wire radius were determined. There are well-defined extrema of T 21 at certain values of the bias magnetic field 0 , corresponding to ferromagnetic resonance (FMR) and antiresonance (FMAR) modes. The position of these maxima and minima does not depend on the orientation of H 0 , although T 21 is sensitive to the direction of 0 . The distribution of the magnetization component across the nanowire is calculated for the second and low order exchange SW modes.Index Terms-Electromagnetic propagation in magnetic media, magnetic materials, magnetic resonance, nanotechnology.

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“…Using the computational algorithm based on the decomposition approach by autonomous blocks with Floquet channels (FABs), as in Golovanov (2006;Golovanov and Makeeva, 2009) the scattering parameters of the S matrix of 2-D magnetic nanowire arrays, depending on the bias magnetic field H 0 , were calculated for nanowire diameters 10 < 2r < 60 nm at a frequency of 30 THz (Makeeva et al, 2009a). Using the computational algorithm based on the decomposition approach by autonomous blocks with Floquet channels (FABs), as in Golovanov (2006;Golovanov and Makeeva, 2009) the scattering parameters of the S matrix of 2-D magnetic nanowire arrays, depending on the bias magnetic field H 0 , were calculated for nanowire diameters 10 < 2r < 60 nm at a frequency of 30 THz (Makeeva et al, 2009a).…”

Section: Emw Scattering In Nanowires At Thz Frequenciesmentioning

confidence: 99%