Quantitative determination of vortex core dimensions in head-to-head domain walls using off-axis electron holography

F. Junginger; M. Kläui; D. Backes; S. Krzyk; U. Rüdiger; T. Kasama; R. E. Dunin-Borkowski; J. M. Feinberg; R. J. Harrison; L. J. Heyderman

doi:10.1063/1.2829601

Quantitative determination of vortex core dimensions in head-to-head domain walls using off-axis electron holography

F. Junginger, M. Kläui, D. Backes, S. Krzyk, U. Rüdiger, T. Kasama, R. E. Dunin-Borkowski, J. M. Feinberg, R. J. Harrison, L. J. Heyderman

Earth and Environmental Sciences-Twin Cities

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Abstract

In this paper, we present a complete three-dimensional characterization of vortex core spin structures, which is important for future magnetic data storage based on vortex cores in disks and in wires. Using electron holography to examine vortices in patterned Permalloy devices we have quantitatively measured the in-plane and out-of-plane magnetization of a vortex core. Observed core widths and integrated phase shifts agree well with those derived from micromagnetic simulations.

Original language	English (US)
Article number	112502
Journal	Applied Physics Letters
Volume	92
Issue number	11
DOIs	https://doi.org/10.1063/1.2829601
State	Published - 2008

Bibliographical note

Funding Information:
The authors acknowledge support by the Deutsche Forschungsgemeinschaft (SFB 513), Landesstiftung Baden Württemberg, and the EPSRC (UK). One of the authors (F.J.) acknowledges support by the “Studienstiftung des Deutschen Volkes,” D.B. acknowledges support by the European Union (Interreg III A program), R.E.D.B. acknowledges support by the Royal Society, and J.M.F. thanks NERC (UK) for financial support.

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title = "Quantitative determination of vortex core dimensions in head-to-head domain walls using off-axis electron holography",

abstract = "In this paper, we present a complete three-dimensional characterization of vortex core spin structures, which is important for future magnetic data storage based on vortex cores in disks and in wires. Using electron holography to examine vortices in patterned Permalloy devices we have quantitatively measured the in-plane and out-of-plane magnetization of a vortex core. Observed core widths and integrated phase shifts agree well with those derived from micromagnetic simulations.",

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note = "Funding Information: The authors acknowledge support by the Deutsche Forschungsgemeinschaft (SFB 513), Landesstiftung Baden W{\"u}rttemberg, and the EPSRC (UK). One of the authors (F.J.) acknowledges support by the “Studienstiftung des Deutschen Volkes,” D.B. acknowledges support by the European Union (Interreg III A program), R.E.D.B. acknowledges support by the Royal Society, and J.M.F. thanks NERC (UK) for financial support. ",

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AU - Junginger, F.

AU - Kläui, M.

AU - Backes, D.

AU - Krzyk, S.

AU - Rüdiger, U.

AU - Kasama, T.

AU - Dunin-Borkowski, R. E.

AU - Feinberg, J. M.

AU - Harrison, R. J.

AU - Heyderman, L. J.

N1 - Funding Information: The authors acknowledge support by the Deutsche Forschungsgemeinschaft (SFB 513), Landesstiftung Baden Württemberg, and the EPSRC (UK). One of the authors (F.J.) acknowledges support by the “Studienstiftung des Deutschen Volkes,” D.B. acknowledges support by the European Union (Interreg III A program), R.E.D.B. acknowledges support by the Royal Society, and J.M.F. thanks NERC (UK) for financial support.

PY - 2008

Y1 - 2008

N2 - In this paper, we present a complete three-dimensional characterization of vortex core spin structures, which is important for future magnetic data storage based on vortex cores in disks and in wires. Using electron holography to examine vortices in patterned Permalloy devices we have quantitatively measured the in-plane and out-of-plane magnetization of a vortex core. Observed core widths and integrated phase shifts agree well with those derived from micromagnetic simulations.

AB - In this paper, we present a complete three-dimensional characterization of vortex core spin structures, which is important for future magnetic data storage based on vortex cores in disks and in wires. Using electron holography to examine vortices in patterned Permalloy devices we have quantitatively measured the in-plane and out-of-plane magnetization of a vortex core. Observed core widths and integrated phase shifts agree well with those derived from micromagnetic simulations.

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Quantitative determination of vortex core dimensions in head-to-head domain walls using off-axis electron holography

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