This article is cited in 5 papers

Magnetism

Dynamics of pulsed remagnetization of magnetically uniaxial nanoparticles

A. M. Shutyi, D. I. Sementsov

Ulyanovsk State University

Abstract: The response of the magnetic moment of a magnetically uniaxial nanoparticle and a planar array of such nanoparticles to a short Gaussian magnetic field pulse is studied in the presence and absence of its modulation. The periodic dependence of the response duration and the final orientation of magnetic moments on the pulse duration and its peak value are revealed and analyzed. The effect of the weak bias magnetic field and the pulse field deviation from the transverse orientation on remagnetization processes is studied. It was shown that the effect of the dipole–dipole interaction leads to modulation of the response to the pulse exposure.

Keywords: pulse magnetization reversal, precession dynamics, uniaxial anisotropy, magnetic nanoparticle.

Received: 07.04.2019
Revised: 05.05.2019
Accepted: 14.05.2019

DOI: 10.21883/FTT.2019.10.48249.448

 English version: Physics of the Solid State, 2019, 61:10, 1736–1745

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