XYZ-polarisation analysis of diffuse magnetic neutron scattering from single crystals

TL;DR

This paper extends the XYZ-polarization analysis method to single crystals, enabling detailed separation of magnetic and nuclear diffuse scattering contributions for better understanding of magnetic frustration effects.

Contribution

The paper introduces a symmetry-based extension of the XYZ method for analyzing diffuse magnetic scattering in single crystals, improving upon previous polycrystalline approaches.

Findings

Derived a new XYZ-polarization analysis technique for single crystals.

Demonstrated complete separation of magnetic and nuclear scattering components.

Enhanced understanding of spin correlations in frustrated magnetic systems.

Abstract

Studies of diffuse magnetic scattering largely benefit from the use of a multi-detector covering wide scattering angles. Therefore, the different contributions to the diffuse scattering that originate from magnetic, nuclear coherent, and nuclear spin-incoherent scattering can be separated by the so-called XYZ-polarization analysis. In the past this method has been successfully applied to the analysis of diffuse scattering by polycrystalline samples of magnetic disordered materials. Single crystal studies that exploit the vector properties of spin correlations are of particular interest for furthering our understanding of frustration effects in magnetism. Based on the symmetry properties of polarised scattering a suitable extension of the conventional XYZ method has been derived, which allows for the complete separation and the analysis of features of diffuse magnetic scattering from single crystals.