Skyrmion-like bubbles and stripes in a thin ferromagnetic film with lattice of antidots

Marchenko, A. I.; Krivoruchko, V. N.

doi:10.1016/j.jmmm.2014.10.036

Cited by 11 publications

(5 citation statements)

References 32 publications

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“…Similar bubble-like structures were reported by Marchenko et al . for the cobalt antidot arrays with in-plane magnetization 37 , but so far such configurations have not been observed for the systems with PMA.…”

Section: Resultsmentioning

confidence: 86%

Magnetic reversal in perpendicularly magnetized antidot arrays with intrinsic and extrinsic defects

Krupiński

Sobieszczyk

Zieliński

et al. 2019

Sci Rep

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Defects can significantly affect performance of nanopatterned magnetic devices, therefore their influence on the material properties has to be understood well before the material is used in technological applications. However, this is experimentally challenging due to the inability of the control of defect characteristics in a reproducible manner. Here, we construct a micromagnetic model, which accounts for intrinsic and extrinsic defects associated with the polycrystalline nature of the material and with corrugated edges of nanostructures. The predictions of the model are corroborated by the measurements obtained for highly ordered arrays of circular Co/Pd antidots with perpendicular magnetic anisotropy. We found that magnetic properties, magnetic reversal and the evolution of the domain pattern are strongly determined by density of defects, heterogeneity of nanostructures, and edge corrugations. In particular, an increase in the Néel domain walls, as compared to Bloch walls, was observed with a increase of the antidot diameters, suggesting that a neck between two antidots can behave like a nanowire with a width determined by the array period and antidot size. Furthermore, the presence of edge corrugations can lead to the formation of a network of magnetic bubbles, which are unstable in non-patterned flat films.

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Section: Resultsmentioning

confidence: 86%

Magnetic reversal in perpendicularly magnetized antidot arrays with intrinsic and extrinsic defects

Krupiński

Sobieszczyk

Zieliński

et al. 2019

Sci Rep

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show abstract

“…Nevertheless to initialize the skyrmion lattice in the sample this method involves sophisticated manipulations with the external magnetic field while the skyrmion charge density achieved in the experiment (and demonstrated in simulation) is less than 1 m 2 μ − . Another suggested method is based on the idea of the spatial modulation of the magnetic film thickness [25,26]. The micromagnetic simulations demonstrate the possibility of creation of dense enough (more than 100 m 2 μ − ) skyrmion lattices in the nanopatterned magnetic films with perpendicular anisotropy, the skyrmions can be initialized by the simple magnetizing of the sample in the uniform external field.…”

Section: Introductionmentioning

confidence: 99%

Skyrmion lattice in a magnetic film with spatially modulated material parameters

Сапожников

2015

Journal of Magnetism and Magnetic Materials

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“…Thus, skyrmions will be trapped at the saddle point within the lattice, allowing for control of current driven motion. It has also been shown, with micromagnetic simulations, 25 that an antidot lattice can be tailored to host skyrmion-like bubbles, which form without the presence of DMI.…”

Section: Introductionmentioning

confidence: 96%

Formation of Néel-type skyrmions in an antidot lattice with perpendicular magnetic anisotropy

et al. 2019

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Magnetic skyrmions are particle-like chiral spin textures found in a magnetic film with out-of-plane anisotropy and are considered to be potential candidates as information carriers in next generation data storage devices. Despite intense research into the nature of skyrmions and their dynamic properties, there are several key challenges that still need to be addressed. In particular, the outstanding issues are the reproducible generation, stabilization and confinement of skyrmions at room temperature. Here, we present a method for the capture of nanometer sized magnetic skyrmions in an array of magnetic topological defects in the form of an antidot lattice. With micromagnetic simulations, we elucidate the skyrmion formation in the antidot lattice and show that the capture is dependent on the antidot lattice parameters. This behavior is confirmed with scanning transmission x-ray microscopy measurements. This demonstration that a magnetic antidot lattice can be implemented as a host to capture skyrmions provides a new platform for experimental investigations of skyrmions and skyrmion based devices.

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Skyrmion-like bubbles and stripes in a thin ferromagnetic film with lattice of antidots

Cited by 11 publications

References 32 publications

Magnetic reversal in perpendicularly magnetized antidot arrays with intrinsic and extrinsic defects

Magnetic reversal in perpendicularly magnetized antidot arrays with intrinsic and extrinsic defects

Skyrmion lattice in a magnetic film with spatially modulated material parameters

Formation of Néel-type skyrmions in an antidot lattice with perpendicular magnetic anisotropy

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