72 citations · 549 across the 29 of their papers we have counts for
18 papers · 1 filter
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…
Exploring Anisotropy Contributions in MnCoFeO Ferrite Nanoparticles for Biomedical Applications
Marianna Gerina, Marco Sanna Angotzi, Valentina Mameli +7
Designing well-defined magnetic nanomaterials is crucial for various applications and it demands a comprehensive understanding of their magnetic properties at the microscopic level…
Micromagnetic simulation of neutron scattering from spherical nanoparticles: Effect of pore-type defects
Evelyn Pratami Sinaga, Michael P. Adams, Mathias Bersweiler +6
We employ micromagnetic simulations to model the effect of pore-type microstructural defects on the magnetic small-angle neutron scattering cross section and the related pair-dista…
The benefits of a Bayesian analysis for the characterization of magnetic nanoparticles
Mathias Bersweiler, Helena Gavilan Rubio, Dirk Honecker +2
Magnetic nanoparticles offer a unique potential for various biomedical applications, but prior to commercial usage a standardized characterization of their structural and magnetic…
Topological energy barrier for skyrmion lattice formation in MnSi
A. W. D. Leishman, R. M. Menezes, G. Longbons +8
We report the direct measurement of the topological skyrmion energy barrier through a hysteresis of the skyrmion lattice in the chiral magnet MnSi. Measurements were made using sma…
Resolving complex spin textures in nanoparticles by magnetic neutron scattering
Laura G. Vivas, Rocio Yanes, Dmitry Berkov +5
In the quest to image the three-dimensional magnetization structure we show that the technique of magnetic small-angle neutron scattering (SANS) is highly sensitive to the details…
Unraveling Nanostructured Spin Textures in Bulk Magnets
Philipp Bender, Jonathan Leliaert, Mathias Bersweiler +2
One of the key challenges in magnetism remains the determination of the nanoscopic magnetization profile within the volume of thick samples, such as permanent ferromagnets. Thanks…
Field Dependence of Magnetic Disorder in Nanoparticles
Dominika Zákutná, Daniel Nižňanský, Lester C. Barnsley +5
The performance characteristics of magnetic nanoparticles towards application, e.g. in medicine, imaging, or as sensors, is directly determined by their magnetization relaxation an…
Magnetic Guinier law
A. Michels, A. Malyeyev, I. Titov +4
Small-angle scattering of x-rays and neutrons is a routine method for the determination of nanoparticle sizes. The so-called Guinier law represents the low-q approximation for the…
Critical size limits for collinear and spin spiral magnetism in CoCrO
Dominika Zákutná, Adam Alemayehu, Jan Vlček +5
The multiferroic behavior of CoCrO results from the appearance of conical spin-spiral magnetic ordering, which induces electric polarization. The magnetic ground state has…
Supraferromagnetic correlations in clusters of magnetic nanoflowers
Philipp Bender, Dirk Honecker, Luis Fernández Barquín
Magnetic nanoflowers are densely packed aggregates of superferromagnetically coupled iron oxide nanocrystallites, which excel during magnetic hyperthermia experiments. Here, we inv…
The magnetic structure factor of correlated moments in small-angle neutron scattering
Dirk Honecker, Luis Fernández Barquín, Philipp Bender
The interplay between structural and magnetic properties of nanostructured magnetic materials allows to realize unconventional magnetic effects, which results in a demand for exper…
Evidence for the formation of nanoprecipitates with magnetically disordered regions in bulk Heusler alloys
Giordano Benacchio, Ivan Titov, Artem Malyeyev +12
Shell ferromagnetism is a new functional property of certain Heusler alloys which has been recently observed in . We report the res…
Dipolar-coupled moment correlations in clusters of magnetic nanoparticles
Philipp Bender, Erik Wetterskog, Dirk Honecker +12
Here, we investigate the nature of the moment coupling between 10-nm DMSA-coated magnetic nanoparticles, in both colloidal dispersion and in powder form. The individual iron oxide…
Effect of Dzyaloshinski-Moriya interaction on spin-polarized neutron scattering
Andreas Michels, Denis Mettus, Dirk Honecker +1
For magnetic materials containing many lattice imperfections (e.g., nanocrystalline magnets), the relativistic Dzyaloshinski-Moriya (DM) interaction may result in nonuniform spin t…
Comment on "Origin of Surface Canting within Nanoparticles"
Andreas Michels, Dirk Honecker, Sergey Erokhin +1
We comment on the Letter "Origin of surface canting within nanoparticles" by K.L. Krycka et al. [Phys. Rev. Lett. , 147203 (2014)].
Analysis of magnetic neutron-scattering data of two-phase ferromagnets
Dirk Honecker, Charles D. Dewhurst, Kiyonori Suzuki +2
We have analyzed magnetic-field-dependent small-angle neutron scattering (SANS) data of soft magnetic two-phase nanocomposite ferromagnets in terms of a recent micromagnetic theory…
Theory of magnetic small-angle neutron scattering of two-phase ferromagnets
Dirk Honecker, Andreas Michels
Based on micromagnetic theory we have derived analytical expressions for the magnetic small-angle neutron scattering (SANS) cross section of a two-phase particle-matrix-type ferrom…