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Temperature dependent nucleation and annihilation of individual magnetic vortices
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10.1063/1.3360841
/content/aip/journal/apl/96/11/10.1063/1.3360841
http://aip.metastore.ingenta.com/content/aip/journal/apl/96/11/10.1063/1.3360841
View: Figures

Figures

Image of FIG. 1.
FIG. 1.

Scanning electron microscope images of Hall cross magnetometers and Py disks adapted to show the measurement configuration for: (a) MH magnetometry for 865 nm disk; (b) BR magnetometry for 526 nm disk. [(c) and (d)] Hysteresis loops measured at 20 K for the disks shown in (a) and (b), respectively. Up and down arrows in the superscript of and refer to increasing and decreasing magnetic field, respectively.

Image of FIG. 2.
FIG. 2.

dependencies of (a) and (b) , for the 526 nm disk, measured with BR magnetometry. The solid red and dashed blue line in both figures correspond to fittings based on models of thermal activation over an energy barrier and saturation magnetization driven vortex formation, respectively.

Image of FIG. 3.
FIG. 3.

dependencies of (a) , (b) , and (c) for the 865 nm disk, measured with MH magnetometry. The solid red and dashed blue lines in (a) and (b) correspond to fittings based on models of thermal activation over an energy barrier, and saturation magnetization driven vortex formation, respectively. (d) Portion of the hysteresis loop for the 865 nm disk showing double-steplike annihilation of a magnetic vortex.

Image of FIG. 4.
FIG. 4.

[(a)–(f)] Portion of the hysteresis loops measured with MH magnetometry for the 644 nm disk at different values. The data show that magnetization reversal occurs via different modes at the different values.

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/content/aip/journal/apl/96/11/10.1063/1.3360841
2010-03-15
2014-04-18
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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Temperature dependent nucleation and annihilation of individual magnetic vortices
http://aip.metastore.ingenta.com/content/aip/journal/apl/96/11/10.1063/1.3360841
10.1063/1.3360841
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