Magnetic correlations in the disordered ferromagnetic alloy Ni-V revealed with small angle neutron scattering

TL;DR

This study uses small angle neutron scattering to investigate magnetic correlations in disordered Ni-V alloys, revealing coexistence of long-range and short-range magnetic order and demonstrating the effectiveness of polarization analysis.

Contribution

It provides new insights into magnetic correlation length scales in disordered ferromagnets using SANS with polarization analysis.

Findings

Detection of long-range magnetic order signatures.

Identification of short-range magnetic correlations.

Enhanced analysis through polarization techniques.

Abstract

We present small angle neutron scattering (SANS) data collected on polycrystalline Ni$_{1-x}$V$_x$ samples with $x\geq0.10$ with confirmed random atomic distribution. We aim to determine the relevant length scales of magnetic correlations in ferromagnetic samples with low critical temperatures $T_c$ that show signs of magnetic inhomogeneities in magnetization and $\mu$SR data. The SANS study reveals signatures of long-range order and coexistence of short-range magnetic correlations in this randomly disordered ferromagnetic alloy. We show the advantages of a polarization analysis in identifying the main magnetic contributions from the dominating nuclear scattering.