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

Junginger, F. and Klaui, M. and Backes, D. and Krzyk, S. and Rudiger, U. and Kasama, T. and Dunin-Borkowski, R. E. and Feinberg, J. M. and Harrison, R. J. and Heyderman, L. J. (2008) Quantitative determination of vortex core dimensions in head-to-head domain walls using off-axis electron holography. Applied Physics Letters, 92 (11). pp. 112502-3. DOI https://doi.org/10.1063/1.2829601

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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.

Item Type:	Article
Uncontrolled Keywords:	2007 AREP IA55 2008 P
Subjects:	03 - Mineral Sciences
Divisions:	03 - Mineral Sciences
Journal or Publication Title:	Applied Physics Letters
Volume:	92
Page Range:	pp. 112502-3
Identification Number:	https://doi.org/10.1063/1.2829601
Depositing User:	Sarah Humbert
Date Deposited:	16 Feb 2009 13:02
Last Modified:	23 Jul 2013 10:07
URI:	http://eprints.esc.cam.ac.uk/id/eprint/444

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