Reversal modes in magnetic nanotubes

TL;DR

This paper investigates how the geometry of ferromagnetic nanotubes influences their magnetic reversal mechanisms, identifying two primary modes involving domain wall propagation through simulations and analytical models.

Contribution

It introduces a combined numerical and analytical approach to understand reversal modes in magnetic nanotubes based on their geometry.

Findings

Long nanotubes reverse magnetization via transverse or vortex domain walls

Reversal mechanism depends on internal and external radii

Study provides insights into magnetic switching behavior

Abstract

The magnetic switching of ferromagnetic nanotubes is investigated as a function of their geometry. Two independent methods are used: Numerical simulations and analytical calculations. It is found that for long tubes the reversal of magnetization is achieved by two mechanism: The propagation of a transverse or a vortex domain wall depending on the internal and external radii of the tube.