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  Stabilization of magnetic helix in exchange-coupled thin films

Dzemiantsova, L. V., Meier, G., & Röhlsberger, R. (2015). Stabilization of magnetic helix in exchange-coupled thin films. Scientific Reports, 5: 16153. doi:10.1038/srep16153.

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Item Permalink: https://hdl.handle.net/11858/00-001M-0000-0029-20B6-3 Version Permalink: https://hdl.handle.net/11858/00-001M-0000-0029-20B7-1
Genre: Journal Article

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http://dx.doi.org/10.1038/srep16153 (Publisher version)
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http://arxiv.org/abs/1412.1379 (Preprint)
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 Creators:
Dzemiantsova, L. V.1, 2, Author
Meier, Guido1, 3, 4, 5, Author           
Röhlsberger, R.1, 2, Author
Affiliations:
1The Hamburg Centre for Ultrafast Imaging, Luruper Chaussee 149, 22761 Hamburg, Germany, ou_persistent22              
2Deutsches Elektronen-Synchrotron, Notkestraβe 85, 22607 Hamburg, Germany, ou_persistent22              
3Dynamics and Transport in Nanostructures, Condensed Matter Dynamics Department, Max Planck Institute for the Structure and Dynamics of Matter, Max Planck Society, ou_2074319              
4Ultrafast Electronics, Scientific Service Units, Max Planck Institute for the Structure and Dynamics of Matter, Max Planck Society, ou_2074323              
5Center for Free-Electron Laser Science, Luruper Chaussee 149, 22761 Hamburg, Germany, ou_persistent22              

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Free keywords: Magnetic properties and materials; Spintronics
 Abstract: Based on micromagnetic simulations, we report on a novel magnetic helix in a soft magnetic film that is sandwiched between and exchange-coupled to two hard magnetic layers with different anisotropies. We show that such a confined helix stays stable without the presence of an external magnetic field. The magnetic stability is determined by the energy minimization and is a result of an internal magnetic field created by the exchange interaction. We show that this internal field stores a magnetic energy density of a few kJ/m3. We also find that it dramatically modifies ferromagnetic resonances, such that the helix can be used as a ferromagnetic resonance filter and a fast acting attenuator.

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Language(s): eng - English
 Dates: 2015-06-222015-09-292015-11-05
 Publication Status: Published online
 Pages: 7
 Publishing info: -
 Table of Contents: -
 Rev. Type: Peer
 Identifiers: DOI: 10.1038/srep16153
arXiv: 1412.1379
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Title: Scientific Reports
  Abbreviation : Sci. Rep.
Source Genre: Journal
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Publ. Info: London, UK : Nature Publishing Group
Pages: - Volume / Issue: 5 Sequence Number: 16153 Start / End Page: - Identifier: Other: 2045-2322
CoNE: https://pure.mpg.de/cone/journals/resource/2045-2322