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Influence of asymmetric disks on control over the existence of vortex in submicrometer-scaled Permalloy disks
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10.1063/1.3566066
/content/aip/journal/jap/109/7/10.1063/1.3566066
http://aip.metastore.ingenta.com/content/aip/journal/jap/109/7/10.1063/1.3566066
View: Figures

Figures

Image of FIG. 1.
FIG. 1.

SEM images of Py disk arrays, in which the elements have a diameter of 500 nm, a thickness of 40 nm, and the excised angles ranges from 15° to 90°.

Image of FIG. 2.
FIG. 2.

(Color online) Hysteresis loops of 800 nm diameter and 40 nm thick NiFe disk arrays with (a) low asymmetry shape (i.e., θ = 15°, 30°, 45°) and (b) high asymmetry shape (i.e., θ = 60°, 75°, 90°).

Image of FIG. 3.
FIG. 3.

(Color online) (a) Analyzed vortex nucleation and annihilation fields as functions of the excised angle for 800 nm NiFe disk array. (b) Analyzed vortex nucleation and annihilation fields as functions of the excised angle with the aspect ratio for 800 nm NiFe disk array.

Image of FIG. 4.
FIG. 4.

(Color online) Dependences of the Hn and Han on the aspect ratio, the Hn and Han being analyzed from the MOEK and simulated hysteresis loops, respectively. (a) The elements are 40 nm thick and 500 nm in diameter. (b) The elements are 40 nm thick and 300 nm in diameter.

Image of FIG. 5.
FIG. 5.

(Color online) Dependences of the vortex existence field (Hv) on the aspect ratio with different disk diameters. All elements have an identical thickness of 40 nm.

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/content/aip/journal/jap/109/7/10.1063/1.3566066
2011-04-15
2014-04-21
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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Influence of asymmetric disks on control over the existence of vortex in submicrometer-scaled Permalloy disks
http://aip.metastore.ingenta.com/content/aip/journal/jap/109/7/10.1063/1.3566066
10.1063/1.3566066
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