Uniaxial polarization analysis of bulk ferromagnets: Theory and first experimental Results

TL;DR

This paper develops a micromagnetic SANS theory to analyze uniaxial polarization in bulk ferromagnets, validated by experimental data, offering a new approach for magnetic neutron microstructure analysis.

Contribution

It introduces a theoretical framework based on Brown's equations for uniaxial polarization analysis and demonstrates its application with experimental results on a nanocrystalline alloy.

Findings

The theory accurately predicts experimental polarization data.

Micromagnetic SANS provides a new tool for magnetic microstructure analysis.

First experimental validation of the theoretical approach.

Abstract

Based on Brown's static equations of micromagnetics, we compute the uniaxial polarization of the scattered neutron beam of a bulk magnetic material. The theoretical expressions are compared to experimental data on a soft magnetic nanocrystalline alloy. The micromagnetic SANS theory provides a general framework for polarized real-space neutron methods, and it opens up a new avenue for magnetic neutron data analysis on magnetic microstructures.