Control of magnetic vortex wall chirality, polarity and position by a magnetic field

TL;DR

This paper demonstrates how applying a magnetic field can precisely control the chirality, polarity, and position of vortex domain walls in soft magnetic nanowires, using simulations and SEMPA analysis.

Contribution

It introduces a method to manipulate vortex domain wall properties in nanowires through magnetic field orientation, combining simulations with experimental SEMPA data.

Findings

Magnetic field orientation can tune vortex wall chirality and polarity.

Controlled vortex wall positioning achieved in nanowires.

Simulation and SEMPA results agree on control mechanisms.

Abstract

The seeding of vortex domain walls in V-shaped nanowires by a magnetic field has been investigated via simulations and Scanning Electron Microscopy with Polarization Analysis (SEMPA). It is found that the orientation of the magnetic field can be used to purposely tune the chirality, polarity and position of single vortex domain walls in soft magnetic nanowires.