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Micromagnetic calculation of dynamic susceptibility in ferromagnetic nanorings
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10.1063/1.3108537
/content/aip/journal/jap/105/8/10.1063/1.3108537
http://aip.metastore.ingenta.com/content/aip/journal/jap/105/8/10.1063/1.3108537

Figures

Image of FIG. 1.
FIG. 1.

Equilibrium magnetization for different lengths of rings. (a) Magnetization configuration of . (b) Magnetization configuration of . (c) Magnified view on top of (outer diameter 20 nm, inner diameter 12 nm).

Image of FIG. 2.
FIG. 2.

The imaginary part of susceptibility of the permalloy rings as a function of frequency for different lengths (outer diameter 20 nm, inner diameter 12 nm).

Image of FIG. 3.
FIG. 3.

Resonance frequencies as a function of for rings. Prisms denote resonance frequencies of permalloy , circles denote resonance frequencies of permalloylike .

Image of FIG. 4.
FIG. 4.

Local susceptibility for . (a) The magnetic spectrum of the edge part (first 30 nm, i.e., and ) of the permalloy nanoring along its long axis. (b) The magnetic spectrum of the middle part of the permalloy nanoring along its long axis.

Image of FIG. 5.
FIG. 5.

Red line denotes the Kittel prediction, solid prisms denote the weighted average resonance frequency , open circles denote the weighted average resonance frequency including the third peak . Inset: magnified view of specific frequencies.

Tables

Generic image for table
Table I.

The relationship between the magnetic parameters and the frequencies of the studied systems. For different lengths, the frequencies of shape mode (low frequency) and the frequencies of volume mode (high frequency) are presented.

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/content/aip/journal/jap/105/8/10.1063/1.3108537
2009-04-20
2014-04-20
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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Micromagnetic calculation of dynamic susceptibility in ferromagnetic nanorings
http://aip.metastore.ingenta.com/content/aip/journal/jap/105/8/10.1063/1.3108537
10.1063/1.3108537
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