Effect of Interactions and Non-uniform Magnetic States on the Magnetization Reversal of Iron Nanowire Arrays

I. S. Dubitskiy, A. H. A. Elmekawy, E. G. Iashina, S. V. Sotnichuk, K. S. Napolskii, Dirk Menzel, A. A. Mistonov

Research output: Contribution to journalArticlepeer-review

3 Scopus citations

Abstract

Ordered ferromagnetic nanowire arrays are widely studied due to the diversity of possible applications. However, there is still no complete understanding of the relation between the array’s parameters and its magnetic behavior. The effect of vortex states on the magnetization reversal of large-diameter nanowires is of particular interest. Here, we compare analytical and micromagnetic models with experimental results for three arrays of iron nanowires with diameters of 33, 52 and 70 nm in order to find the balance between the number of approximations and resources used for the calculations. The influence of the vortex states and the effect of interwire interactions on the remagnetization curves are discussed. It has been found that 7 nanowires treated by a mean field model are able to reproduce well the reversal behavior of the whole array in the case of large diameter nanowires. Vortex states tend to decrease the influence of the structural inhomogeneities on reversal process and thus lead to the increased predictability of the system.

Original languageEnglish
Pages (from-to)539-549
Number of pages11
JournalJournal of Superconductivity and Novel Magnetism
Volume34
Issue number2
DOIs
StatePublished - Feb 2021

Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

Keywords

  • Micromagnetics
  • Iron nanowires
  • Vortex state
  • Hysteresis curve

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