# Study of magnetization reversal in Neel and Bloch regime of Ni and Py stripes using Kerr microscopy

## TL;DR

This study investigates how magnetization reverses in Ni and Py micro-stripes with Neel and Bloch domain walls, revealing differences in domain wall density and propagation behavior using Kerr microscopy.

## Contribution

It provides a systematic comparison of magnetization reversal in Neel and Bloch regimes for Ni and Py stripes, highlighting domain wall density differences.

## Key findings

- Higher domain wall density in Bloch regime.
- Domain propagation varies with stripe width and magnetic field direction.
- Nucleation starts in lower width regions.

## Abstract

We present a systematic study of the magnetization reversal of nickel and permalloy micro-stripes with Neel and Bloch domain walls using Kerr microscopy. Magnetic field driven domain propagation was observed from higher width to lower width stripes for magnetic fields applied along the length of micro-stripes. Stripe like domains were observed with nucleation starting in lower width region followed by their propagation to higher width regions for magnetic fields applied along the width of micro-stripes. The comparison of magnetization reversal in Bloch and N\'eel domain wall regime showed higher domain wall density in Bloch regime for both nickel and permalloy stripes.