# Magnetic properties of nanowires with ferromagnetic core and antiferromagnetic shell

## TL;DR

This study uses Monte Carlo simulations to explore how the interface exchange coupling and shell polycrystallinity influence the magnetic properties and reversal mechanisms of ferromagnetic core-antiferromagnetic shell nanowires.

## Contribution

It provides new insights into the effects of interface exchange coupling and shell polycrystallinity on nanowire magnetic behavior, including domain wall transitions.

## Key findings

- Polycrystalline shells increase coercivity and exchange bias.
- Interface exchange coupling affects hysteresis loop characteristics.
- Critical core diameter for domain wall transition is increased by polycrystalline shells.

## Abstract

We present a Monte Carlo study of the magnetic properties of thin cylindrical nanowires composed of a ferromagnetic core and an antiferromagnetic shell implementing a classical spin Hamiltonian. We address systematically the impact of interface exchange coupling on the loop characteristics and the magnetization reversal mechanism. We study the effect of shell polycrystallinity on the characteristic fields of the isothermal hysteresis loop (coercivity, exchange-bias). We demonstrate that coupling to a polycrystalline antiferromagnetic shell increases the critical core diameter for transition from transverse to vortex domain walls.