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Equilibrium magnetic states in individual hemispherical permalloy caps
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10.1063/1.4756708
/content/aip/journal/apl/101/13/10.1063/1.4756708
http://aip.metastore.ingenta.com/content/aip/journal/apl/101/13/10.1063/1.4756708
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Figures

Image of FIG. 1.
FIG. 1.

(a) Magnetic vortex state in a planar disk () on top of an underetched pillow visualized by XMCD-PEEM. (b) XMCD-PEEM signal of 20 nm thick Py caps with diameters of 330, 100, 50 nm (field of view: ). (c) Vortex core displacement causes a significant change of the tail contrast. Both samples show due to transmission an inverted tail contrast. The schematics illustrate the contrast origin of three-dimensional magnetic structures: (d) planar significantly underetched Py disk, and (e) Py cap.

Image of FIG. 2.
FIG. 2.

(a) Magnetization distribution in a Py cap with a radius R = 30 nm and a thickness h = 10 nm. The top view shows the cross-section as indicated in the side view. The sample is in the onion state. (b) Phase diagram of equilibrium magnetization states in caps. Symbols correspond to simulation data for Py nanocaps: ,uniform easy-axis state; , onion state; •, vortex state; lines represent the phase boundaries of disks. The double circles indicate the experimental data.

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/content/aip/journal/apl/101/13/10.1063/1.4756708
2012-09-28
2014-04-19
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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Equilibrium magnetic states in individual hemispherical permalloy caps
http://aip.metastore.ingenta.com/content/aip/journal/apl/101/13/10.1063/1.4756708
10.1063/1.4756708
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