Numerical calculation of magnetic form factors of complex shape nano-particles coupled with micromagnetic simulations

TL;DR

This paper presents a numerical method to compute the magnetic form factors of complex-shaped nano-particles with non-uniform magnetization, aiding 3D magnetization reconstruction via neutron scattering.

Contribution

It introduces a numerical procedure to calculate 3D magnetic form factors from micromagnetic simulations for complex nano-objects.

Findings

Validated method on spheres, rods, and platelets

Enables 3D vectorial magnetization reconstruction

Facilitates analysis of complex nano-particle magnetism

Abstract

We investigate the calculation of the magnetic form factors of nano-objects with complex geometrical shapes and non homogeneous magnetization distributions. We describe a numerical procedure which allows to calculate the 3D magnetic form factor of nano-objects from realistic magnetization distributions obtained by micromagnetic calculations. This is illustrated in the canonical cases of spheres, rods and platelets. This work is a first step towards a 3D vectorial reconstruction of the magnetization at the nanometric scale using neutron scattering techniques.