Publikation: Domain wall velocity measurement in permalloy nanowires with X-ray magnetic circular dichroism imaging and single shot Kerr microscopy
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2009
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Moore, Thomas
Backes, Dirk
Rhensius, Jan
Heyderman, Laura J.
Mentes, Tevfik Onur
Niño, M. Á.
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Published
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Journal of Magnetism and Magnetic Materials. 2009, 322(9-12), pp. 1347-1352. ISSN 0304-8853. Available under: doi: 10.1016/j.jmmm.2009.06.048
Zusammenfassung
Domain walls (DWs) propagated along nanoscale magnetic wires by current or field pulses could potentially be used for data storage or logic applications, but the understanding of the DW dynamics, particularly under the influence of spin-polarized current, is incomplete. Measuring the velocity can give insights into the physics of the DW motion. Here we demonstrate DW velocity measurements in permalloy (Ni80Fe20) nanowires (1500 nm width and 20 nm thickness) using the techniques of X-ray magnetic circular dichroism photoemission electron microscopy (XMCD-PEEM) to image the magnetic contrast in the nanowires, and single shot Kerr microscopy, which allows for dynamic measurements. The magnetic imaging yields the average velocity as well as information on the DW spin structure, whereas the single shot method highlights the stochastic nature of the DW motion.
Zusammenfassung in einer weiteren Sprache
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530 Physik
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Ferromagnetic nanowire, Domain wall dynamics, Spin torque
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MOORE, Thomas, Mathias KLÄUI, Lutz HEYNE, Philipp MÖHRKE, Dirk BACKES, Jan RHENSIUS, Ulrich RÜDIGER, Laura J. HEYDERMAN, Tevfik Onur MENTES, M. Á. NIÑO, A. LOCATELLI, A. POTENZA, H. MARCHETTO, Stuart CAVILL, Sarnjeet S. DHESI, 2009. Domain wall velocity measurement in permalloy nanowires with X-ray magnetic circular dichroism imaging and single shot Kerr microscopy. In: Journal of Magnetism and Magnetic Materials. 2009, 322(9-12), pp. 1347-1352. ISSN 0304-8853. Available under: doi: 10.1016/j.jmmm.2009.06.048BibTex
@article{Moore2009Domai-876,
year={2009},
doi={10.1016/j.jmmm.2009.06.048},
title={Domain wall velocity measurement in permalloy nanowires with X-ray magnetic circular dichroism imaging and single shot Kerr microscopy},
number={9-12},
volume={322},
issn={0304-8853},
journal={Journal of Magnetism and Magnetic Materials},
pages={1347--1352},
author={Moore, Thomas and Kläui, Mathias and Heyne, Lutz and Möhrke, Philipp and Backes, Dirk and Rhensius, Jan and Rüdiger, Ulrich and Heyderman, Laura J. and Mentes, Tevfik Onur and Niño, M. Á. and Locatelli, A. and Potenza, A. and Marchetto, H. and Cavill, Stuart and Dhesi, Sarnjeet S.}
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<dcterms:abstract xml:lang="eng">Domain walls (DWs) propagated along nanoscale magnetic wires by current or field pulses could potentially be used for data storage or logic applications, but the understanding of the DW dynamics, particularly under the influence of spin-polarized current, is incomplete. Measuring the velocity can give insights into the physics of the DW motion. Here we demonstrate DW velocity measurements in permalloy (Ni80Fe20) nanowires (1500 nm width and 20 nm thickness) using the techniques of X-ray magnetic circular dichroism photoemission electron microscopy (XMCD-PEEM) to image the magnetic contrast in the nanowires, and single shot Kerr microscopy, which allows for dynamic measurements. The magnetic imaging yields the average velocity as well as information on the DW spin structure, whereas the single shot method highlights the stochastic nature of the DW motion.</dcterms:abstract>
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