Asymmetrical magnetization processes induced by compositional gradients in ferromagnetic nanowires

Fernández-González, Claudia; Berja, Alba; Álvaro-Gómez, Laura; Martín-Rubio, Carolina; Mascaraque Susunaga, Arantzazu; Aballe, Lucía; Sanz, Ruy; Ruiz-Gómez, Sandra; Pérez García, Lucas

Asymmetrical magnetization processes induced by compositional gradients in ferromagnetic nanowires

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Official URL

https://www.sciencedirect.com/science/article/pii/S1359646224000058

Publication date

2024

Authors

Fernández-González, Claudia

Berja, Alba

Álvaro-Gómez, Laura

Martín-Rubio, Carolina

Mascaraque Susunaga, Arantzazu

Publisher

Elsevier

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URI

https://hdl.handle.net/20.500.14352/94414

Citation

Claudia Fernández-González, Alba Berja, Laura Álvaro-Gómez, Carolina Martín-Rubio, Arantzazu Mascaraque, Lucía Aballe, Ruy Sanz, Lucas Pérez and Sandra Ruiz-Gómez. Asymmetrical magnetization processes induced by compositional gradients in ferromagnetic nanowires.Scripta Materialia 243 (2024) 115970

Abstract

Electrodeposited nanowires are an excellent scenario to study and control magnetic domain wall motion in nanostructures. In particular, the introduction of local changes in composition during the growth procedure has been proven to be very efficient for controlling the magnetization dynamics. In this work, we show the possibility of introducing compositional gradients in FeNi electrodeposited nanowires by gradually changing the Fe/Ni ratio along their axis. These compositional gradients produce an asymmetrical landscape for domain wall motion which is reflected in asymmetrical magnetization processes under an applied magnetic field. By studying nanowires with different compositional gradients we were able to correlate composition and magnetic asymmetry. Our results pave the way towards full control of the movement of domain walls along the nanowires.