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Micromagnetic simulations of ferromagnetic rings
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10.1063/1.2832675
/content/aip/journal/jap/103/7/10.1063/1.2832675
http://aip.metastore.ingenta.com/content/aip/journal/jap/103/7/10.1063/1.2832675
View: Figures

Figures

Image of FIG. 1.
FIG. 1.

Magnetization configurations for . (a) Constant saddle, (b) instanton Saddle at , and (c) instanton saddle at .

Image of FIG. 2.
FIG. 2.

Time evolution of the total energy in a field , for the instanton and constant saddle configurations when and . These transition states are chosen to bracket the saddle state at the field of the simulation—the numerically determined is not the same as the parameter used to generate the saddle configurations from Eqs. (8)–(11) of Ref. 1 (see text for a fuller explanation). The arrows represent the magnitudes of the activation energy for each of the saddle states.

Image of FIG. 3.
FIG. 3.

Energy barrier dependence on for both saddle configurations in different regimes. Activation energies for , at are shown for comparison with Fig. 1. Data points represent . For comparison, theoretical lines are plotted for the activation energy. The crossing of the analytical curves in (b) and (d) is not visible due to the graphical resolution.

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/content/aip/journal/jap/103/7/10.1063/1.2832675
2008-02-07
2014-04-24
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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Micromagnetic simulations of ferromagnetic rings
http://aip.metastore.ingenta.com/content/aip/journal/jap/103/7/10.1063/1.2832675
10.1063/1.2832675
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