User profiles for Samuel Dobák

Samuel Dobák

Research Scientist PJ Šafárik University in Košice, Faculty of Science, Institute of Physics
Verified email at upjs.sk
Cited by 603

On the ferrite-controlled iron coupling for enhanced soft magnetic hybrid composites via first-order reversal curves

S Dobák, P Kollár, J Füzer, R Bureš, M Fáberová - Acta Materialia, 2023 - Elsevier
The substitution of conventional non-magnetic binder in soft magnetic iron composites by
insulating spinel ferrite has been proven as a powerful avenue for enhancing the interparticle …

Interplay of domain walls and magnetization rotation on dynamic magnetization process in iron/polymer–matrix soft magnetic composites

S Dobák, J Füzer, P Kollár, M Fáberová… - Journal of Magnetism and …, 2017 - Elsevier
This study sheds light on the dynamic magnetization process in iron/resin soft magnetic
composites from the viewpoint of quantitative decomposition of their complex permeability …

Stress-Induced Magnetization Process in Shifted Grain-Oriented Steel Ring Cores

S Dobák, J Füzer, I Petryshynets… - 2024 IEEE …, 2024 - ieeexplore.ieee.org
Electrical steel's magnetic properties in industrial applications often differ from theoretical
predictions due to assembly-induced mechanical stresses. In this study, we evaluate the …

[HTML][HTML] Magnetic losses in soft ferrites

S Dobák, C Beatrice, V Tsakaloudi, F Fiorillo - Magnetochemistry, 2022 - mdpi.com
We review the basic phenomenology of magnetic losses from DC to 1 GHz in commercial
and laboratory-prepared soft ferrites considering recent concepts regarding their physical …

Effect of Helical Anisotropy on Magnetic Losses in Stacked Cores of Grain-Oriented and Non-Oriented Steels

S Dobák, J Füzer, I Petryshynets… - 2023 IEEE …, 2023 - ieeexplore.ieee.org
Magnetic loss decomposition, going beyond the conventional power frequencies, and first-order
reversal curve approach have been combined to assess the anisotropy of …

Loss separation and thermal studies of Fe/SiO2/ferrite soft magnetic composites

S Vovk, S Dobák, J Füzer, P Kollár, R Bureš… - Journal of Alloys and …, 2023 - Elsevier
Energy saving is one of the main driving forces behind the development of new magnetic
materials. Among many investigated materials, soft magnetic composites (SMCs) appear as a …

Soft magnetic composite based on iron in sintered Mn–Zn ferrite matrix without non-magnetic coating

S Vovk, J Füzer, S Dobák, P Kollár, R Bureš… - Ceramics …, 2023 - Elsevier
Low core loss soft magnetic composites based on iron powder particles encapsulated in
CoO- and TiO 2 -doped sintered Mn–Zn spinel ferrite matrix are fabricated with no additional …

Magnetic properties of soft magnetic Fe@ SiO2/ferrite composites prepared by wet/dry method

F Onderko, Z Birčáková, S Dobák, P Kollár… - Journal of Magnetism …, 2022 - Elsevier
The paper presents the soft magnetic composites consisting of iron particles with smoothed
surfaces, coated by the two-layer insulation of SiO 2 and Ni-Zn/Cu-Zn soft ferrite nano-sized …

Effect of a DC transverse magnetic field on the magnetization dynamics in FeCuNbSiB ribbons and derived nanostructured powder cores

S Dobák, J Füzer, P Kollár - Journal of Alloys and Compounds, 2015 - Elsevier
The paper aims to give a comprehensive account of DC transverse bias magnetic field
influence on the dynamic magnetization processes in Fe 73 Cu 1 Nb 3 Si 16 B 7 soft magnetic …

Broadband magnetic losses of nanocrystalline ribbons and powder cores

C Beatrice, S Dobák, E Ferrara, F Fiorillo… - Journal of Magnetism …, 2016 - Elsevier
Finemet type alloys have been investigated from DC to 1 GHz at different induction levels
upon different treatments: as amorphous precursors, as ribbons nanocrystallized with and …