Competing Magnetocrystalline and Shape Anisotropy in Thin Nanoparticles

Autor: Dominika Kuźma, Oleksandr Pastukh, Piotr Zieliński
Jazyk: angličtina
Rok vydání: 2024
Předmět:
Zdroj: Crystals, Vol 14, Iss 4, p 375 (2024)
Druh dokumentu: article
ISSN: 2073-4352
DOI: 10.3390/cryst14040375
Popis: Micromagnetic computations were performed to predict the magnetisation maps in thin elliptically shaped nanoparticles under a variable external magnetic field. Two materials were compared as the constituents of the nanoparticles: permalloy as an example of an isotropic magnet and cobalt, i.e., a hard magnetic material marked with a single easy axis. The interplay of the shape and magnetocrystalline anisotropy gives rise to a variety of switching scenarios, which may be of interest in designing memory storage devices. A fairly periodic shape-induced superlattice-like spin configuration occurs when the shape and magnetocrystalline easy axes are orthogonal. Possible applications as magnonic devices are discussed.
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