Analysis of Magnetic Properties of Iron-Resin-Ferrite Soft Magnetic Composite Materials
Z. Birčákováa, P. Kollárb, J. Füzerb, M. Streckovaa, J. Szabóa, R. Bureša, M. Fáberováa
aInstitute of Materials Research, Slovak Academy of Sciences, Watsonova 47, 04001 Košice, Slovakia
bInstitute of Physics, Faculty of Science, P.J. Šafárik University, Park Angelinum 9, 04154 Košice, Slovakia
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The analysis of magnetic properties of soft magnetic composite materials composed of iron insulated by polymer bonded Ni-Zn ferrite nanofibers is presented in the paper, focusing on the investigation of magnetization processes, by means of the total energy loss separation, the peak, differential, reversible and irreversible permeability analysis and modelling and the percent proportions of reversible and irreversible processes determination. The highest permeability exhibited by the sample with the optimal ferrite to resin ratio within insulation means the highest number of movable domain walls involved in the magnetization process. The highest proportion of irreversible domain wall displacements and the lowest proportion of reversible magnetization vector rotations were found for this sample, as well as the highest low induction losses and the lowest high induction losses, which also revealed the highest amount of domain wall displacements, facilitating magnetization reversal and resulting in the improved soft magnetic properties.

DOI:10.12693/APhysPolA.140.64
topics: soft magnetic composites, ferrite nanofibers, reversible permeability, magnetization process