Magnetism, spintronics

Hysteresis in magnetization curves of “ideal” antiferromagnetic nanoparticles

A. V. Lobachev, M. A. Chuev

Valiev Institute of Physics and Technology of Russian Academy of Sciences

Abstract: We have performed theoretical analysis of the magnetization curves of antiferromagnetic nanoparticles with “ideal” shape for arbitrary orientation of the magnetic field relative to the axial magnetic anisotropy axis. It was found that the well-known values of critical magnetic fields for the longitudinal orientation of the magnetic field vector vary smoothly with increasing of angle between the field direction and the easy axis, such that the hysteresis loop width in the magnetization curves becomes narrower and disappears at a certain critical value of this angle. It was also shown that the hysteresis loop width and the critical angle itself increase with increasing ratio of the magnetic anisotropy constant to the exchange constant.

Keywords: magnetization curves, antiferromagnetic nanoparticles, hysteresis.

Received: 11.10.2025
Revised: 07.11.2025
Accepted: 10.11.2025

DOI: 10.61011/FTT.2025.11.62136.274-25

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