8 citations · 18 across the 16 of their papers we have counts for
10 papers · 1 filter
Reduced vortex descriptors linking polycrystallinity in magnetic nanoparticles with polarized magnetic small-angle neutron scattering
M. P. Adams, J. Leliaert, A. Michels +1
Analytical vortex models reduce polarized magnetic small-angle neutron scattering (SANS) from nanoparticle ensembles to a small set of texture descriptors. In this work, we apply t…
Polarized neutron scattering as a probe for vortex-type spin correlations in iron oxide multicore assemblies
Venus Rai, Ivan Titov, Elizabeth M. Jefremovas +11
We report an experimental investigation of the magnetic microstructure of iron oxide multicore assemblies by means of polarized small-angle neutron scattering (SANS). Guided by a r…
Angular anisotropy landscape of vortex ensembles in polarized small-angle neutron scattering
Michael P. Adams, Elizabeth M. Jefremovas, Andreas Michels
We present a symmetry-resolved classification of two-dimensional spin-flip small-angle neutron scattering (SANS) patterns arising from dilute ensembles of spherical nanoparticles h…
Spin-disorder-induced angular anisotropy in polarized magnetic neutron scattering
I. Titov, M. Bersweiler, M. P. Adams +14
We experimentally report a hitherto unseen angular anisotropy in the polarized small-angle neutron scattering (SANS) cross section of a magnetically strongly inhomogeneous material…
Micromagnetic structure of oxidized magnetite nanoparticles: sharp structural versus diffuse magnetic interface
Elizabeth M. Jefremovas, Michael P. Adams, Lucía Gandarias +4
The oxidation of magnetite to maghemite is a naturally occurring process that leads to the degradation of the magnetic properties of magnetite nanoparticles. Despite being systemat…
Scaling in Magnetic Neutron Scattering
Venus Rai, Andreas Michels
We report the discovery of scaling in the mesoscale magnetic microstructure of bulk ferromagnets. Supported by analytical micromagnetic theory, we introduce the field-dependent sca…
Low-frequency signature of magnetization nutation in nanomagnets
M. P. Adams, R. Bastardis, A. Michels +1
In this work, we show that surface anisotropy in nanomagnets induces a nutational motion of their magnetization at various frequencies, the lowest of which can be described by the…
Small-angle neutron scattering signatures of magnetic hopfions
Konstantin L. Metlov, Andreas Michels
Magnetic hopfions are three-dimensional localized magnetic topological solitons which can exist in the bulk of magnetic materials. Based on a Ritz model for magnetic hopfions in a…
Neutron-scattering signature of the Dzyaloshinskii-Moriya interaction in nanoparticles
Evelyn Pratami Sinaga, Michael P. Adams, Eddwi H. Hasdeo +1
The antisymmetric Dzyaloshinkii-Moriya interaction (DMI) arises in systems with broken inversion symmetry and strong spin-orbit coupling. In conjunction with the isotropic and symm…
Spatial magnetization profile in spherical nanomagnets with surface anisotropy: Green's function approach
M. P. Adams, A. Michels, H. Kachkachi
We consider a single spherical nanomagnet and investigate the spatial magnetization profile in the continuum approach, using the Green's functio…