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  Synthesis and Three-Dimensional Magnetic Field Mapping of Co2FeGa Heusler Nanowires at 5 nm Resolution

Simon, P., Wolf, D., Wang, C., Levin, A. A., Lubk, A., Sturm, S., et al. (2016). Synthesis and Three-Dimensional Magnetic Field Mapping of Co2FeGa Heusler Nanowires at 5 nm Resolution. Nano Letters, 16(1), 114-120. doi:10.1021/acs.nanolett.5b03102.

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Item Permalink: http://hdl.handle.net/11858/00-001M-0000-0029-7DF8-4 Version Permalink: http://hdl.handle.net/21.11116/0000-0001-0031-7
Genre: Journal Article

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 Creators:
Simon, Paul1, Author              
Wolf, Daniel2, Author
Wang, Changhai3, Author              
Levin, Aleksandr A.4, Author              
Lubk, Axel2, Author
Sturm, Sebastian2, Author
Lichte, Hannes2, Author
Fecher, Gerhard H.5, Author              
Felser, Claudia6, Author              
Affiliations:
1Paul Simon, Chemical Metal Science, Max Planck Institute for Chemical Physics of Solids, Max Planck Society, ou_1863418              
2External Organizations, ou_persistent22              
3Inorganic Chemistry, Max Planck Institute for Chemical Physics of Solids, Max Planck Society, ou_1863425              
4Chemical Metal Science, Max Planck Institute for Chemical Physics of Solids, Max Planck Society, ou_1863405              
5Gerhard Fecher, Inorganic Chemistry, Max Planck Institute for Chemical Physics of Solids, Max Planck Society, ou_1863431              
6Claudia Felser, Inorganic Chemistry, Max Planck Institute for Chemical Physics of Solids, Max Planck Society, ou_1863429              

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 Abstract: We present the synthesis of Co2FeGa Heusler nanowires and the results of our investigations on their three-dimensional (3D) electric and magnetic internal and external fields mapped by electron holographic tomography (EHT). These fields will be of great importance in next-generation nanomagnets integrated in spintronics and memory devices. The Co2FeGa nanowires with a L2(1) ordered structure are prepared by a SBA-15 silica-assisted method. The magnetic dipole-like stray fields of several Co2FeGa nanowires are revealed by holographically reconstructed phase images. Based on the measured magnetic phase shifts of an individual nanowire and its 3D reconstruction using EHT, we obtain an internal magnetic induction with a magnitude of 1.15 T and a nonmagnetic surface layer of 10 nm thickness. Furthermore, we also reconstruct the 3D distribution of the electrostatic potential of the same nanowire.

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Language(s): eng - English
 Dates: 2016-01-202016-01-20
 Publication Status: Published in print
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Title: Nano Letters
  Abbreviation : Nano Lett.
Source Genre: Journal
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Publ. Info: Washington, DC : American Chemical Society
Pages: - Volume / Issue: 16 (1) Sequence Number: - Start / End Page: 114 - 120 Identifier: ISSN: 1530-6984
CoNE: /journals/resource/110978984570403