Effects of combined current injection and laser irradiation on Permalloymicrowire switching

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2009
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Franken, Jeroen H.
Rhensius, Jan
Heyderman, Laura J.
Thiele, Jan-Ulrich
Swagten, Henk J. M.
Gibson, Ursula J.
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Combined field- and current-induced domain wall (DW) motion in Perm alloy microwires is studied using fast magneto-optical Kerr-microscopy. On increasing the current density, we find a decrease of Kerr signal contrast, corresponding to a reduction in the magnetization, which is attributed to Joule heating of the sample. Resistance measurements on samples with varying substrates confirm that the Curie temperature is reached when the magneto-optical contrast vanishes and reveal the importance of the heat flow into the substrate, By tuning the laser power, DWs can be pinned in the laser spot, which can thus act as a flexible pinning site for DW deviccs.

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ISO 690FRANKEN, Jeroen H., Philipp MÖHRKE, Mathias KLÄUI, Jan RHENSIUS, Laura J. HEYDERMAN, Jan-Ulrich THIELE, Henk J. M. SWAGTEN, Ursula J. GIBSON, Ulrich RÜDIGER, 2009. Effects of combined current injection and laser irradiation on Permalloymicrowire switching. In: Applied Physics Letters. 2009, 95, 212502. Available under: doi: 10.1063/1.3265944
BibTex
@article{Franken2009Effec-5209,
  year={2009},
  doi={10.1063/1.3265944},
  title={Effects of combined current injection and laser irradiation on Permalloymicrowire switching},
  volume={95},
  journal={Applied Physics Letters},
  author={Franken, Jeroen H. and Möhrke, Philipp and Kläui, Mathias and Rhensius, Jan and Heyderman, Laura J. and Thiele, Jan-Ulrich and Swagten, Henk  J. M. and Gibson, Ursula J. and Rüdiger, Ulrich},
  note={Article Number: 212502}
}
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