Modulated Magnetic Nanowires for Controlling Domain Wall Motion: Toward 3D Magnetic Memories

Handle URI:
http://hdl.handle.net/10754/621401
Title:
Modulated Magnetic Nanowires for Controlling Domain Wall Motion: Toward 3D Magnetic Memories
Authors:
Ivanov, Yurii P. ( 0000-0003-0271-5504 ) ; Chuvilin, Andrey; Lopatin, Sergei; Kosel, Jürgen ( 0000-0002-8998-8275 )
Abstract:
Cylindrical magnetic nanowires are attractive materials for next generation data storage devices owing to the theoretically achievable high domain wall velocity and their efficient fabrication in highly dense arrays. In order to obtain control over domain wall motion, reliable and well-defined pinning sites are required. Here, we show that modulated nanowires consisting of alternating nickel and cobalt sections facilitate efficient domain wall pinning at the interfaces of those sections. By combining electron holography with micromagnetic simulations, the pinning effect can be explained by the interaction of the stray fields generated at the interface and the domain wall. Utilizing a modified differential phase contrast imaging, we visualized the pinned domain wall with a high resolution, revealing its three-dimensional vortex structure with the previously predicted Bloch point at its center. These findings suggest the potential of modulated nanowires for the development of high-density, three-dimensional data storage devices. © 2016 American Chemical Society.
KAUST Department:
King Abdullah University of Science and Technology, Thuwal, Saudi Arabia
Citation:
Ivanov YP, Chuvilin A, Lopatin S, Kosel J (2016) Modulated Magnetic Nanowires for Controlling Domain Wall Motion: Toward 3D Magnetic Memories. ACS Nano 10: 5326–5332. Available: http://dx.doi.org/10.1021/acsnano.6b01337.
Publisher:
American Chemical Society (ACS)
Journal:
ACS Nano
Issue Date:
3-May-2016
DOI:
10.1021/acsnano.6b01337
Type:
Article
ISSN:
1936-0851; 1936-086X
Sponsors:
Research reported in this publication was supported by the King Abdullah University of Science and Technology (KAUST).
Appears in Collections:
Articles

Full metadata record

DC FieldValue Language
dc.contributor.authorIvanov, Yurii P.en
dc.contributor.authorChuvilin, Andreyen
dc.contributor.authorLopatin, Sergeien
dc.contributor.authorKosel, Jürgenen
dc.date.accessioned2016-11-03T08:28:26Z-
dc.date.available2016-11-03T08:28:26Z-
dc.date.issued2016-05-03en
dc.identifier.citationIvanov YP, Chuvilin A, Lopatin S, Kosel J (2016) Modulated Magnetic Nanowires for Controlling Domain Wall Motion: Toward 3D Magnetic Memories. ACS Nano 10: 5326–5332. Available: http://dx.doi.org/10.1021/acsnano.6b01337.en
dc.identifier.issn1936-0851en
dc.identifier.issn1936-086Xen
dc.identifier.doi10.1021/acsnano.6b01337en
dc.identifier.urihttp://hdl.handle.net/10754/621401-
dc.description.abstractCylindrical magnetic nanowires are attractive materials for next generation data storage devices owing to the theoretically achievable high domain wall velocity and their efficient fabrication in highly dense arrays. In order to obtain control over domain wall motion, reliable and well-defined pinning sites are required. Here, we show that modulated nanowires consisting of alternating nickel and cobalt sections facilitate efficient domain wall pinning at the interfaces of those sections. By combining electron holography with micromagnetic simulations, the pinning effect can be explained by the interaction of the stray fields generated at the interface and the domain wall. Utilizing a modified differential phase contrast imaging, we visualized the pinned domain wall with a high resolution, revealing its three-dimensional vortex structure with the previously predicted Bloch point at its center. These findings suggest the potential of modulated nanowires for the development of high-density, three-dimensional data storage devices. © 2016 American Chemical Society.en
dc.description.sponsorshipResearch reported in this publication was supported by the King Abdullah University of Science and Technology (KAUST).en
dc.publisherAmerican Chemical Society (ACS)en
dc.subject3D memoryen
dc.titleModulated Magnetic Nanowires for Controlling Domain Wall Motion: Toward 3D Magnetic Memoriesen
dc.typeArticleen
dc.contributor.departmentKing Abdullah University of Science and Technology, Thuwal, Saudi Arabiaen
dc.identifier.journalACS Nanoen
dc.contributor.institutionCIC NanoGUNE Consolider, Avenida de Tolosa 76, San Sebastian, Spainen
dc.contributor.institutionIKERBASQUE, Basque Foundation for Science, Maria Diaz de Haro 3, Bilbao, Spainen
kaust.authorIvanov, Yurii P.en
kaust.authorLopatin, Sergeien
kaust.authorKosel, Jürgenen
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