output
20142023
most citedUsing small-angle scattering to guide functional magnetic nanoparticle design

72 citations

14 papers

cond-mat.mtrl-sci2023★ 25 cited

FeCo Nanowire-Strontium Ferrite Powder Composites for Permanent Magnets with High-Energy Products

J. C. Guzmán-Mínguez, S. Ruiz-Gómez, L. M. Vicente-Arche +11

Due to the issues associated with rare-earth elements, there arises a strong need for magnets with properties between those of ferrites and rare-earth magnets that could substitute…

cond-mat.mtrl-sci2023★ 5 cited

Remanence Increase in SrFeO/Fe Exchange-Decoupled Hard-Soft Composite Magnets Owing to Dipolar Interactions

Jesús Carlos Guzmán-Mínguez, Cecilia Granados-Miralles, Patrick Kuntschke +6

In the search for improved permanent magnets, fueled by the geostrategic and environmental issues associated with rare-earth-based magnets, magnetically hard (high anisotropy)-soft…

cond-mat.mes-hall2022★ 4 cited

Generic role of the Dzyaloshinskii-Moriya interaction in nanocrystalline ferromagnets

S. Erokhin, D. Berkov, A. Michels

Motivated by recent experimental polarized neutron results, we present a numerical micromagnetic study of the interfacial (intergrain) Dzyaloshinskii-Moriya interaction (DMI) in na…

cond-mat.mtrl-sci2022★ 72 cited

Using small-angle scattering to guide functional magnetic nanoparticle design

Dirk Honecker, Mathias Bersweiler, Sergey Erokhin +8

Magnetic nanoparticles offer unique potential for various technological, biomedical, or environmental applications thanks to the size-, shape- and material-dependent tunability of…

cond-mat.stat-mech2021★ 2 cited

Single-stage direct Langevin dynamic simulations of transitions over arbitrary high energy barriers: Concept of the energy-dependent temperature

Dmitry Berkov, Elena K. Semenova, Natalia L. Gorn

In this paper we present an algorithm which allows single-stage direct Langevin dynamics simulations of transitions over arbitrary high energy barriers employing the concept of the…

cond-mat.mes-hall2020★ 9 cited

Optimal control of magnetization reversal in a monodomain particle by means of applied magnetic field

G. J. Kwiatkowski, M. H. A. Badarneh, D. V. Berkov +1

A complete analytical solution to the optimal reversal of a macrospin with easy-axis anisotropy is presented. Optimal control path minimizing the energy cost of the reversal is ide…

cond-mat.mtrl-sci2020★ 4 cited

Mechanical orientation of fine magnetic particles in powders by an external magnetic field: simulation-based optimization

Sergey Erokhin, Dmitry Berkov

We present a numerical algorithm for predicting the optimal conditions for the effective alignment of magnetic particles in dense powders during the compactization process using an…

cond-mat.mes-hall2020★ 26 cited

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…

cond-mat.mes-hall2019★ 34 cited

Size-dependent spatial magnetization profile of manganese-zinc ferrite Mn0.2Zn0.2Fe2.6O4 nanoparticles

Mathias Bersweiler, Philipp Bender, Laura G. Vivas +7

We report the results of an unpolarized small-angle neutron scattering (SANS) study on Mn-Zn ferrite (MZFO) magnetic nanoparticles with the aim to elucidate the interplay between t…

physics.app-ph2019★ 3 cited

Injection locking at fractional frequencies of magnetic tunnel junction (MTJ)-based read sensors' ferromagnetic resonance modes

Ekaterina Auerbach, Dmitry Berkov, Bernhard Pichler +3

Being nonlinear dynamic systems, magnetic read sensors should respond to an excitation signal of a frequency considerably different from their natural ferromagnetic resonance (FMR)…

cond-mat.mtrl-sci2018★ 5 cited

Dislocation-induced stress in polycrystalline materials: mesoscopic simulations in the dislocation density formalism

D. V. Berkov, N. L. Gorn

In this paper we present a simple and effective numerical method which allows a fast Fourier transformation-based evaluation of stress generated by dislocations with arbitrary dire…

cond-mat.mtrl-sci2017★ 7 cited

Towards understanding of magnetization reversal in NdFeB nanocomposites: Analysis by high-throughput micromagnetic simulations

Sergey Erokhin, Dmitry Berkov, Masaaki Ito +3

We demonstrate how micromagnetic simulations can be employed in order to characterize and analyze the magnetic microstructure of nanocomposites. For the example of nanocrystalline…

cond-mat.mes-hall2015★ 22 cited

Dipolar spin-misalignment correlations in inhomogeneous magnets: comparison between neutron scattering and micromagnetic approaches

Sergey Erokhin, Dmitry Berkov, Andreas Michels

In inhomogeneous bulk ferromagnets, the dominating sources of spin disorder are related to spatial variations of (i) the magnitude of the local saturation magnetization and of (ii)…

cond-mat.mes-hall2014★ 5 cited

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)].