Magnetic Solitons in Hierarchical 3D Magnetic Nanoarchitectures of Nanoflower Shape

Bezsmertna, Olha; Xu, Rui; Pylypovskyi, Oleksandr; Raftrey, David; Sorrentino, Andrea; Fernandez-Roldan, Jose Angel; Soldatov, Ivan; Wolf, Daniel; Lubk, Axel; Schäfer, Rudolf; Fischer, Peter; Makarov, Denys

doi:10.1021/acs.nanolett.4c04584

Title: Magnetic Solitons in Hierarchical 3D Magnetic Nanoarchitectures of Nanoflower Shape

Journal Article · 26 November 2024 · Nano Letters

DOI: https://doi.org/10.1021/acs.nanolett.4c04584 · OSTI ID:2478891

^[1]; Xu, Rui ^[1];

^[2]; Raftrey, David ^[3];

^[4]; Fernandez-Roldan, Jose Angel ^[1]; Soldatov, Ivan ^[5];

^[5];

^[5]; Schäfer, Rudolf ^[5];

^[3];

^[1]

Helmholtz-Zentrum Dresden-Rossendorf (Germany). Institute of Ion Beam Physics and Materials Research
Helmholtz-Zentrum Dresden-Rossendorf (Germany). Institute of Ion Beam Physics and Materials Research; Kyiv Academic University (Ukraine)
Univ. of California, Santa Cruz, CA (United States); Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States)
Alba Light Source (Spain)
Leibniz Inst. for Solid State and Materials Research (IFW), Dresden (Germany)

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 cm² 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.

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Research Organization:: Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States)

Sponsoring Organization:: USDOE Office of Science (SC), Basic Energy Sciences (BES); USDOE Office of Science (SC), Basic Energy Sciences (BES). Materials Sciences & Engineering Division (MSE)

Grant/Contract Number:: AC02-05CH11231

OSTI ID:: 2478891

Journal Information:: Nano Letters, Journal Name: Nano Letters Journal Issue: 49 Vol. 24; ISSN 1530-6984

Publisher:: American Chemical SocietyCopyright Statement

Country of Publication:: United States

Language:: English

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