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Effects of combined current injection and laser irradiation on Permalloy microwire switching
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10.1063/1.3265944
/content/aip/journal/apl/95/21/10.1063/1.3265944
http://aip.metastore.ingenta.com/content/aip/journal/apl/95/21/10.1063/1.3265944
View: Figures

Figures

Image of FIG. 1.
FIG. 1.

(a) Kerr signals obtained in zero field by current pulses through a wire with the two possible monodomain states, indicated in the schematic drawings. The current densities used are 2.7 and for the continuous and dotted lines, respectively. The inset shows the experimental geometry (for details see Ref. 8). (b) Kerr signals from single shots of combined current- and field-induced DW motion for three different current densities. The current densities used are 2.7, 6.2, and for the continuous, dashed, and dotted line, respectively. The dc bias field is 8.3, 6.8, and 6.1 G, respectively. The schematic drawings show the magnetic configuration before and after the current pulse.

Image of FIG. 2.
FIG. 2.

(a) The difference of the Kerr signal levels of both monodomain states during current pulses (open squares) and Kerr signal jump height of DW motion events as a function of current density (filled circles). The drop indicates a demagnetization due to Joule heating; (b) Resistance (right) and corresponding temperature (left) as a function of current density for Permalloy nanowires on different substrates; thermally oxidized Si (gray circles, ticks outside the ordinate to the right), naturally oxidized high resistance Si (black triangles, ticks inside the ordinate to the right). For the thermally oxidized Si is reached at a current density of . Additionally, a reduced Joule heating for the naturally oxidized Si is observed. The different scales originate from slight differences in the wires used.

Image of FIG. 3.
FIG. 3.

MOKE trace showing the pinning of a DW in the laser spot. The field sweep rate is 350 kG/s and the wall was pinned between 7.6 and 10.1 G.

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/content/aip/journal/apl/95/21/10.1063/1.3265944
2009-11-24
2014-04-16
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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Effects of combined current injection and laser irradiation on Permalloy microwire switching
http://aip.metastore.ingenta.com/content/aip/journal/apl/95/21/10.1063/1.3265944
10.1063/1.3265944
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