Magnetic Solitons in Hierarchical 3D Magnetic Nanoarchitectures of Nanoflower Shape
Curvilinear magnetism emerged as a new route to tailor properties of magnetic solitons by the choice of geometry and topology of a magnetic architecture. Here, we develop an anodized aluminum oxide template-based approach to realize hierarchical 3D magnetic nanoarchitectures of nanoflower shape. The technique provides defect-free regular arrays of magnetic nanoflowers of tunable shape with a period of 400 nm over cm<sup>2</sup> areas. We combined advanced magnetic imaging methods with micromagnetic simulations to study complex magnetic states in nanoflowers originating due to magnetostatics-driven symmetry break in curvilinear nanomembranes. An interaction between surface and volume magnetostatic charges in 3D curved nanoflowers leads to the stabilization of asymmetric and shifted vortices as well as states with two Bloch lines. Ordered large area arrays of complex-shaped magnetic nanoarchitectures developed in this work are relevant for prospective research on 3D magnonics and spintronics.
Authors
- Rui Chao Xu (ORCID: https://orcid.org/0000-0003-4361-1971)
- David Raftrey (ORCID: https://orcid.org/0000-0001-8339-5383)
- Ivan Soldatov (ORCID: https://orcid.org/0000-0002-2911-1842)
- Andrea Sorrentino (ORCID: https://orcid.org/0000-0002-3235-8950)
- Jose Ángel Fernández-Roldán (ORCID: https://orcid.org/0000-0002-8320-5268)
- Denys Makarov (ORCID: https://orcid.org/0000-0002-7177-4308)
- Daniel Wolf (ORCID: https://orcid.org/0000-0001-5000-8578)
- Oleksandr V. Pylypovskyi (ORCID: https://orcid.org/0000-0002-5947-9760)
- Peter Fischer (ORCID: https://orcid.org/0000-0002-9824-9343)
- Axel Lubk (ORCID: https://orcid.org/0000-0003-2698-8806)
- Olha Bezsmertna
- Rudolf Schäfer
Institutions
- Lawrence Berkeley National Laboratory (US)
- University of California, Santa Cruz (US)
- ALBA Synchrotron (Spain) (ES)
- Helmholtz-Zentrum Dresden-Rossendorf (DE)
- Leibniz Institute for Solid State and Materials Research (DE)
- Kyiv Academic University (UA)
Publication Details
- Journal
- Nano Letters
- Published
- 2024-11-26
- DOI
- https://doi.org/10.1021/acs.nanolett.4c04584
- Citations
- 11
- Primary Topic
- Micro and Nano Robotics
- Type
- article
- Field-Weighted Citation Impact
- 3.42
Funders
- Alexander von Humboldt-Stiftung
- Deutsche Forschungsgemeinschaft
- Horizon 2020 Framework Programme
- European Research Council
- Basic Energy Sciences