Micromagnetics of magnetic chemical modulations in soft-magnetic cylindrical nanowires
Alvaro-Gomez L, Ruiz-Gomez S, Fernandez-Gonzalez C, Schobitz M, Mille N, Hurst J, Tiwari D, De Riz A, Andersen IM, Bachmann J, Cagnon L, Foerster M, Aballe L, Belkhou R, Toussaint JC, Thirion C, Masseboeuf A, Gusakova D, Perez L, Fruchart O (2022)
Publication Type: Journal article
Publication year: 2022
Journal
Book Volume: 106
Journal Issue: 5
DOI: 10.1103/PhysRevB.106.054433
Abstract
We analyze the micromagnetics of short longitudinal modulations of a high-magnetization material in cylindrical nanowires made of a soft-magnetic material of lower magnetization such as permalloy, combining magnetic microscopy, analytical modeling, and micromagnetic simulations. The mismatch of magnetization induces curling of magnetization around the axis in the modulations, in an attempt to screen the interfacial magnetic charges. The curling angle increases with modulation length, until a plateau is reached with nearly full charge screening for a specific length scale delta(mod), larger than the dipolar exchange length of any of the two materials. The curling circulation can be switched by the Oersted field arising from a charge current with typical magnitude 10(12) A/m(2) for a diameter of similar to 100 nm, and reaching a maximum for delta(mod).
Authors with CRIS profile
Involved external institutions
University of Grenoble Alpes (UGA) / Université de Grenoble
France (FR)
CELLS ALBA Synchrotron (Consorcio para la Construcción, Equipamiento y Explotación del Laboratorio de Luz de Sincrotrón)
Spain (ES)
IMDEA-Nanociencia
Spain (ES)
Synchrotron SOLEIL
France (FR)
Center for Materials Elaboration and Structural Studies / Centre d’Élaboration de Matériaux et d’Études Structurales
France (FR)
France (FR)
CELLS ALBA Synchrotron (Consorcio para la Construcción, Equipamiento y Explotación del Laboratorio de Luz de Sincrotrón)
Spain (ES)
IMDEA-Nanociencia
Spain (ES)
Synchrotron SOLEIL
France (FR)
Center for Materials Elaboration and Structural Studies / Centre d’Élaboration de Matériaux et d’Études Structurales
France (FR)
How to cite
APA:
Alvaro-Gomez, L., Ruiz-Gomez, S., Fernandez-Gonzalez, C., Schobitz, M., Mille, N., Hurst, J.,... Fruchart, O. (2022). Micromagnetics of magnetic chemical modulations in soft-magnetic cylindrical nanowires. Physical Review B, 106(5). https://doi.org/10.1103/PhysRevB.106.054433
MLA:
Alvaro-Gomez, L., et al. "Micromagnetics of magnetic chemical modulations in soft-magnetic cylindrical nanowires." Physical Review B 106.5 (2022).
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