Asymmetric hysteresis loops and horizontal loop shifts in purely ferromagnetic nanoparticles

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Konferenzbeitrag | Veröffentlicht | Englisch
Autor*in
Detzmeier, Joscha ; Königer, Kevin ; Ehrmann, AndreaFH Bielefeld
Abstract
Horizontally shifted and asymmetric hysteresis loops are often associated with exchange-biased samples, consisting of a ferromagnet exchange-coupled with an antiferromagnet. In purely ferromagnetic samples, such effects can occur due to undetected minor loops or thermal effects. Simulations of ferromagnetic nanostructures at zero temperature with sufficiently large saturation fields should not lead to such asymmetries. Here we report on micromagnetic simulations at zero temperature, performed on sputtered nanoparticles with different shapes. The small deviations of the systems due to random anisotropy orientations in the different grains can not only result in strong deviations of magnetization reversal processes and hysteresis loops, but also to distinctly asymmetric, horizontally shifted hysteresis loops in purely ferromagnetic nanoparticles.
Erscheinungsjahr
Titel des Konferenzbandes
2nd International Online-Conference on Nanomaterials
Konferenz
2nd International Online-Conference on Nanomaterials
Konferenzort
online
Konferenzdatum
15 November 2020 – 30 November 2020
FH-PUB-ID
684
Volltext(e)
Access Level
OA Open Access
Zuletzt Hochgeladen
2021-01-03T17:58:31Z


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