Artificial Dense Lattices of Magnetic Skyrmions

Maksim V. Sapozhnikov, Yuri V. Petrov , Nikita S. Gusev , Alexey G. Temiryazev , Olga L. Ермолаева, Victor L. Mironov, Oleg G. Udalov

Результат исследований: Научные публикации в периодических изданияхстатья

Выдержка

Multilayer Co/Pt films with perpendicular magnetic anisotropy are irradiated by focused a He+ ion beam to locally reduce the anisotropy value. The irradiated spots with the diameters of 100 and 200 nm are arranged in square lattices with the periods of 200 and 300 nm. The formation of nonuniform magnetic states within the spots was observed by magnetic force microscopy methods. We use the concentric distribution of the irradiation fluence within the spot to obtain the radial modulation of the anisotropy constant. This allows us to induce magnetic skyrmions during magnetization reversal of the system. The skyrmions remained stable at zero external magnetic field at room temperature. Magnetization hysteresis loops of the samples were investigated by magnetooptical methods and the results are in good agreement with micromagnetic simulations
Язык оригиналаанглийский
Номер статьи99
Число страниц9
ЖурналMaterials
Том13
Номер выпуска1
Ранняя дата в режиме онлайн24 дек 2019
DOI
СостояниеОпубликовано - янв 2020

Отпечаток

Anisotropy
Magnetic force microscopy
Magnetization reversal
anisotropy
Magnetic anisotropy
Hysteresis loops
Ion beams
Magnetization
magnetization
Multilayers
magnetic force microscopy
Modulation
Irradiation
Magnetic fields
fluence
ion beams
hysteresis
modulation
irradiation
room temperature

Предметные области Scopus

  • Физика конденсатов

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Sapozhnikov, M. V., Petrov , Y. V., Gusev , N. S., Temiryazev , A. G., Ермолаева, O. L., Mironov, V. L., & Udalov, O. G. (2020). Artificial Dense Lattices of Magnetic Skyrmions. Materials, 13(1), [99]. https://doi.org/10.3390/ma13010099
Sapozhnikov, Maksim V. ; Petrov , Yuri V. ; Gusev , Nikita S. ; Temiryazev , Alexey G. ; Ермолаева, Olga L. ; Mironov, Victor L. ; Udalov, Oleg G. / Artificial Dense Lattices of Magnetic Skyrmions. В: Materials. 2020 ; Том 13, № 1.
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title = "Artificial Dense Lattices of Magnetic Skyrmions",
abstract = "Multilayer Co/Pt films with perpendicular magnetic anisotropy are irradiated by focused a He+ ion beam to locally reduce the anisotropy value. The irradiated spots with the diameters of 100 and 200 nm are arranged in square lattices with the periods of 200 and 300 nm. The formation of nonuniform magnetic states within the spots was observed by magnetic force microscopy methods. We use the concentric distribution of the irradiation fluence within the spot to obtain the radial modulation of the anisotropy constant. This allows us to induce magnetic skyrmions during magnetization reversal of the system. The skyrmions remained stable at zero external magnetic field at room temperature. Magnetization hysteresis loops of the samples were investigated by magnetooptical methods and the results are in good agreement with micromagnetic simulations.",
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Sapozhnikov, MV, Petrov , YV, Gusev , NS, Temiryazev , AG, Ермолаева, OL, Mironov, VL & Udalov, OG 2020, 'Artificial Dense Lattices of Magnetic Skyrmions', Materials, том. 13, № 1, 99. https://doi.org/10.3390/ma13010099

Artificial Dense Lattices of Magnetic Skyrmions. / Sapozhnikov, Maksim V. ; Petrov , Yuri V. ; Gusev , Nikita S. ; Temiryazev , Alexey G. ; Ермолаева, Olga L. ; Mironov, Victor L. ; Udalov, Oleg G.

В: Materials, Том 13, № 1, 99, 01.2020.

Результат исследований: Научные публикации в периодических изданияхстатья

TY - JOUR

T1 - Artificial Dense Lattices of Magnetic Skyrmions

AU - Sapozhnikov, Maksim V.

AU - Petrov , Yuri V.

AU - Gusev , Nikita S.

AU - Temiryazev , Alexey G.

AU - Ермолаева, Olga L.

AU - Mironov, Victor L.

AU - Udalov, Oleg G.

PY - 2020/1

Y1 - 2020/1

N2 - Multilayer Co/Pt films with perpendicular magnetic anisotropy are irradiated by focused a He+ ion beam to locally reduce the anisotropy value. The irradiated spots with the diameters of 100 and 200 nm are arranged in square lattices with the periods of 200 and 300 nm. The formation of nonuniform magnetic states within the spots was observed by magnetic force microscopy methods. We use the concentric distribution of the irradiation fluence within the spot to obtain the radial modulation of the anisotropy constant. This allows us to induce magnetic skyrmions during magnetization reversal of the system. The skyrmions remained stable at zero external magnetic field at room temperature. Magnetization hysteresis loops of the samples were investigated by magnetooptical methods and the results are in good agreement with micromagnetic simulations.

AB - Multilayer Co/Pt films with perpendicular magnetic anisotropy are irradiated by focused a He+ ion beam to locally reduce the anisotropy value. The irradiated spots with the diameters of 100 and 200 nm are arranged in square lattices with the periods of 200 and 300 nm. The formation of nonuniform magnetic states within the spots was observed by magnetic force microscopy methods. We use the concentric distribution of the irradiation fluence within the spot to obtain the radial modulation of the anisotropy constant. This allows us to induce magnetic skyrmions during magnetization reversal of the system. The skyrmions remained stable at zero external magnetic field at room temperature. Magnetization hysteresis loops of the samples were investigated by magnetooptical methods and the results are in good agreement with micromagnetic simulations.

KW - magnetic skyrmions

KW - He ion nanomodification

KW - Co/Pt films

U2 - https://doi.org/10.3390/ma13010099

DO - https://doi.org/10.3390/ma13010099

M3 - Article

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JF - Materials

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Sapozhnikov MV, Petrov YV, Gusev NS, Temiryazev AG, Ермолаева OL, Mironov VL и соавт. Artificial Dense Lattices of Magnetic Skyrmions. Materials. 2020 Янв.;13(1). 99. https://doi.org/10.3390/ma13010099