16 citations · 36 across the 14 of their papers we have counts for
14 papers
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…
Engineering micro-disorder for macro-performance in magnetic nanoparticles
Jonathan Leliaert, Elizabeth M Jefremovas
Spin disorder, inherent to magnetic nanoparticles, has traditionally been regarded as a detrimental feature, with materials-engineering efforts largely focused on producing ''perfe…
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…
Nanoscale mapping of internal magnetization dynamics reveals how disorder shapes heat generation in magnetic particle hyperthermia
Elizabeth M. Jefremovas, Pauline Rooms, Álvaro Gallo-Córdova +4
Magnetic particle hyperthermia relies on the efficient conversion of magnetic field energy into heat in biomedical applications, yet the microscopic mechanisms governing heat gener…
Skyrmion Lattice Order Controlled by Confinement Geometry
Raphael Gruber, Jan Rothörl, Simon M. Fröhlich +8
Magnetic skyrmions forming two-dimensional (2D) lattices provide a versatile platform for investigating phase transitions predicted by Kosterlitz-Thouless-Halperin-Nelson-Young (KT…
Controlling Skyrmion Lattice Orientation with Local Magnetic Field Gradients
Duc Minh Tran, Edoardo Mangini, Elizabeth M. Jefremovas +4
Precise control over the formation and arrangement of magnetic skyrmion lattices is essential for understanding their emergent behavior and advancing their integration into spintro…
Skyrmion Lattice Domain Formation in a Non-Flat Energy Landscape
Raphael Gruber, Jan Rothörl, Simon M. Fröhlich +9
Magnetic skyrmions are chiral spin structures with non-trivial topology that comprise two-dimensional quasi-particles and are promising information carriers for data storage and pr…
Coercivity-size map of magnetic nanoflowers: spin disorder tunes the vortex reversal mechanism and tailors the hyperthermia sweet spot
Elizabeth M Jefremovas, Lisa Calus, Jonathan Leliaert
Iron-oxide nanoflowers (NFs) are one of the most efficient nanoheaters for magnetic hyperthermia therapy (MHT). However, the physics underlying the spin texture of disordered iron-…
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…
Realizing Quantitative Quasiparticle Modeling of Skyrmion Dynamics in Arbitrary Potentials
Maarten A. Brems, Tobias Sparmann, Simon M. Fröhlich +7
We demonstrate fully quantitative Thiele model simulations of magnetic skyrmion dynamics on previously unattainable experimentally relevant large length and time scales by ascertai…
Imaging Topological Defect Dynamics Mediating 2D Skyrmion Lattice Melting
Raphael Gruber, Jan Rothörl, Simon M. Fröhlich +8
Topological defects are the key feature mediating 2D phase transitions. However, both resolution and tunability have been lacking to access the dynamics of the transitions. With dy…
Experimental realization of metastable target skyrmion states in continuous films
Elizabeth M. Jefremovas, Noah Kent, Jorge Marqués-Marchán +3
Target skyrmions (TSks) are topological spin textures where the out-of-plane component of the magnetization twists an integer number of - rotations. Based on a magnetic multi…
The role of magnetic dipolar interactions in skyrmion lattices
Elizabeth M Jefremovas, Kilian Leutner, Miriam G Fischer +6
Magnetic skyrmions are promising candidates for information and storage technologies. In the last years, magnetic multilayer systems have been tuned to enable room-temperature skyr…