# Polarized neutron reflectometry study from iron oxide nanoparticles monolayer

## TL;DR

This study uses polarized neutron reflectometry to analyze the structural and magnetic properties of a monolayer of iron oxide nanoparticles assembled on a substrate, providing detailed insights into its thickness, density, roughness, and magnetization profile.

## Contribution

It presents a novel application of polarized neutron reflectometry to characterize the magnetic and structural properties of nanoparticle monolayers assembled by the Langmuir-Schaefer method.

## Key findings

- Determined the layer's thickness, density, and roughness.
- Mapped the in-depth magnetization profile.
- Validated the effectiveness of neutron reflectometry for nanoparticle monolayers.

## Abstract

We report on the polarized neutron reflectometry investigation of monolayer of magnetic iron oxide nanoparticles assembled by the Langmuir-Schaefer method. After deposition onto a solid substrate the polarized neutron reflectometry measurements in the external magnetic field were carried out. Thickness, density, roughness and in-depth resolved magnetization profile of the resulted layer were obtained from accurate fitting routine.