Magnetostatic fields in tubular nanostructures

TL;DR

This paper investigates the complex, non-uniform magnetostatic fields in magnetic nanotubes, highlighting their significance in nanomagnetism and potential implications for future research on spin waves and magnetic particle dynamics.

Contribution

It provides a theoretical analysis of the non-uniform magnetostatic fields generated by various magnetic states in nanotubes, emphasizing their importance beyond the commonly assumed uniform fields.

Findings

Magnetostatic fields are highly non-uniform in nanotubes.

Equilibrium and domain wall states produce distinct field distributions.

Results serve as a basis for future studies on spin waves and particle motion.

Abstract

The non-uniform magnetostatic field produced by the equilibrium and non equilibrium magnetic states of magnetic nanotubes has been investigated theoretically. We consider magnetic fields produced by actual equilibrium states and transverse and vortex domain walls confined within the nanostructure. Our calculations allow us to understand the importance of the magnetostatic field in nanomagnetism, which is frequently considered as a uniform field. Moreover, our results can be used as a basis for future research of others properties, such as the investigation of spin waves when domain walls are present, or the motion of a magnetic particle near a magnetic field.