Rotational dynamics of paired nano-domain walls confined in an elliptical ring

Hara, Masahiro; Shibata, Junya; Kimura, Takashi; Otani, Y.

doi:10.1016/j.jmmm.2006.10.909

Cited by 3 publications

(2 citation statements)

References 9 publications

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“…In an elliptical ring, the stability of the domain walls depends on their positions, which determines the rotational direction of the paired domain walls. 26 In summary, we find that a magnetic transition in a microfabricated NiFe ring excited by a pulsed magnetic field depends on the amplitude and the rise time of the pulsed field. The relation between the time scale of a varying magnetic field and the propagation time of the domain wall crucially effects the magnetization behavior in the artificial ferromagnetic structure.…”

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confidence: 71%

Controlled depinning of domain walls in a ferromagnetic ring circuit

Hara

Kimura

Otani

2007

Applied Physics Letters

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The authors have investigated dynamics of paired domain walls in a ferromagnetic ring circuit, driven by a variable pulsed magnetic field. The magnetic reversal accompanied by the propagations of the domain walls depends not only on the amplitude but also on the rise time of the applied pulsed magnetic field. The threshold of the rise time is found comparable to the propagation time of a domain wall along a half-path of the ring. This finding may be useful for the high speed operation of the magnetic logic devices based on the domain wall motion.

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confidence: 71%

Controlled depinning of domain walls in a ferromagnetic ring circuit

Hara

Kimura

Otani

2007

Applied Physics Letters

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“…In recent years there is a considerable interest in the magnetic properties of ring-shaped magnetic structures [9][10][11][12][13][14][15][16][17][18][19][20]. Circular ring structures are highly symmetric, with no preference for the locations of domain walls.…”

Section: Introductionmentioning

confidence: 99%

Magnetization reversal of microsized Fe elliptic rings

Westphalen

Remhof

Zabel

2010

Journal of Magnetism and Magnetic Materials

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Width dependent transition of quantized spin-wave modes in Ni80Fe20 square nanorings

Banerjee

Saha

Barman

et al. 2014

Journal of Applied Physics

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We investigated optically induced ultrafast magnetization dynamics in square shaped Ni 80 Fe 20 nanorings with varying ring width. Rich spin-wave spectra are observed whose frequencies showed a strong dependence on the ring width. Micromagnetic simulations showed different types of spin-wave modes, which are quantized upto very high quantization number. In the case of widest ring, the spin-wave mode spectrum shows quantized modes along the applied field direction, which is similar to the mode spectrum of an antidot array. As the ring width decreases, additional quantization in the azimuthal direction appears causing mixed modes. In the narrowest ring, the spinwaves exhibit quantization solely in azimuthal direction. The different quantization is attributed to the variation in the internal field distribution for different ring width as obtained from micromagnetic analysis and supported by magnetic force microscopy. V

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Rotational dynamics of paired nano-domain walls confined in an elliptical ring

Cited by 3 publications

References 9 publications

Controlled depinning of domain walls in a ferromagnetic ring circuit

Controlled depinning of domain walls in a ferromagnetic ring circuit

Magnetization reversal of microsized Fe elliptic rings

Width dependent transition of quantized spin-wave modes in Ni80Fe20 square nanorings

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