Micromagnetic simulations study of skyrmions in magnetic FePt nanoelements

  title={Micromagnetic simulations study of skyrmions in magnetic FePt nanoelements},
  author={Leonidas N. Gergidis and Vasileios D. Stavrou and Drosos Kourounis and Ioannis A. Panagiotopoulos},
  journal={Journal of Magnetism and Magnetic Materials},

Magnetic skyrmions in FePt nanoparticles having Reuleaux 3D geometry: a micromagnetic simulation study.

The magnetization reversal in magnetic FePt nanoelements having Reuleaux 3D geometry is studied using micromagnetic simulations employing Finite Element discretizations and it is shown that the size of skyrmions is linearly dependent on the external field value.

Magnetic Skyrmions in FePt Square-Based Nanoparticles Around Room-Temperature

Magnetic skyrmions formed around room-temperature in square-based parallelepiped magnetic nanoparticles with perpendicular magnetocrystalline anisotropy similar to that of partially chemically

Magnetic skyrmions generation and control in FePt nanoparticles through shape and magnetocrystalline anisotropy variation: a finite elements method micromagnetic simulation study

Magnetic skyrmions created during magnetization reversal in cylindrical, reuleaux and polygon-based magnetic nanoparticles with perpendicular magnetocrystalline anisotropy (MCA) similar to that of



Magnetic stripes and skyrmions with helicity reversals

Surprisingly, it is found that the magnetic bubbles and stripes in the hexaferrite have a much more complex structure than the skyrmions and spirals in helimagnets, which are associated with the new degree of freedom—helicity (or vector spin chirality) describing the direction of spin rotation across the domain walls.

Skyrmionic states in confined helimagnetic nanostructures

Magnetic skyrmions have the potential to provide solutions for low-power, high-density data storage and processing. One of the major challenges in developing skyrmion-based devices is the skyrmions'

Origin of temperature and field dependence of magnetic skyrmion size in ultrathin nanodots

Understanding the physical properties of magnetic skyrmions is important for fundamental research with the aim to develop new spintronic device paradigms where both logic and memory can be integrated

Creation of artificial skyrmions and antiskyrmions by anisotropy engineering

This work reports on controlling the perpendicular anisotropy of continuous Co/Pt multilayer films with ion irradiation to form unique spin configurations of artificial skyrmions and antiskyrmion lattices that are stabilized by their demagnetization energy.

Nucleation, stability and current-induced motion of isolated magnetic skyrmions in nanostructures.

It is demonstrated by numerical investigations that an isolated skyrmion can be a stable configuration in a nanostructure, can be locally nucleated by injection of spin-polarized current, and can be displaced by current-induced spin torques, even in the presence of large defects.

Ground state search, hysteretic behaviour, and reversal mechanism of skyrmionic textures in confined helimagnetic nanostructures

It is demonstrated that skyrmionic textures are the lowest energy states in helimagnetic thin film nanostructures at zero external magnetic field and in absence of magnetocrystalline anisotropy.

Electrical detection of magnetic skyrmions by tunnelling non-collinear magnetoresistance.

Tunnelling non-collinear magnetoresistance is proposed as a reliable all-electrical detection scheme for skyrmions with an easy implementation into device architectures.

Theory of skyrmions in bilayer systems

The colossal spin-transfer-torque effect of bound skyrmion pair on antiferromagnetically coupled bilayer systems is found and the dynamics depends sensitively on the sign of DM interactions, which can be well described by Thiele equation.