AIP Advances (Jan 2021)

Magnetic hysteresis of blocked ferrihydrite nanoparticles

  • S. V. Komogortsev,
  • D. A. Balaev,
  • A. A. Krasikov,
  • S. V. Stolyar,
  • R. N. Yaroslavtsev,
  • V. P. Ladygina,
  • R. S. Iskhakov

DOI
https://doi.org/10.1063/9.0000111
Journal volume & issue
Vol. 11, no. 1
pp. 015329 – 015329-4

Abstract

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Using minor hysteresis loops in the Stoner–Wohlfarth model allows describing the experimental behavior of the coercive force of minor hysteresis loops in ferrihydrite nanoparticles with a change in the field amplitude. The description allows estimating the parameters of the distribution of the magnetic anisotropy field in nanoparticles. The best agreement of the anisotropy fields estimated by different approaches is achieved for the assumption of uniaxial anisotropy in ferrihydrite nanoparticles.