Experimental observation of third-order effect in magnetic small-angle neutron scattering
arXiv:1912.11816 · doi:10.1103/PhysRevB.101.214410
Abstract
A recent theory [Metlov and Michels, Phys. Rev. B 91, 054404 (2015)] predicts a qualitatively new effect in the magnetic small-angle neutron scattering (SANS) cross section of statistically-isotropic disordered ferromagnetic media. The effect is due to the third-order terms in the amplitude of the inhomogeneities. Here, its existence is demonstrated both numerically via large-scale micromagnetic simulations and analyzed experimentally in a two-phase iron-based nanocomposite. The previous model is extended to an arbitrary spatial defect profile, which allows us to describe the experimental field dependence of the third-order SANS effect quantitatively.
arXiv comment8 pages, 4 figures
References in corpus (14)
- Supraferromagnetic correlations in clusters of magnetic nanoflowers
- Dipolar-coupled moment correlations in clusters of magnetic nanoparticles
- Microstructural-defect-induced Dzyaloshinskii-Moriya interaction
- Size-dependent spatial magnetization profile of manganese-zinc ferrite Mn0.2Zn0.2Fe2.6O4 nanoparticles
- Theory of magnetic small-angle neutron scattering of two-phase ferromagnets
- Ordered arrays of magnetic nanowires investigated by polarized small-angle neutron scattering
- Dipolar spin-misalignment correlations in inhomogeneous magnets: comparison between neutron scattering and micromagnetic approaches
- Spin Textures induced by Quenched Disorder in a Reentrant Spin Glass: Vortices versus "Frustrated" Skyrmions
- Analysis of magnetic neutron-scattering data of two-phase ferromagnets
- Evidence for the formation of nanoprecipitates with magnetically disordered regions in bulk Heusler alloys
- Third-order effect in magnetic small-angle neutron scattering by a spatially inhomogeneous medium
- Magnetic neutron scattering on nanocomposites: decrypting cross-section images using micromagnetic simulations
- What makes magnetic skyrmions different from magnetic bubbles ?
- Topological constraints on positions of magnetic solitons in multiply-connected planar magnetic nano-elements