Competing Magnetocrystalline and Shape Anisotropy in Thin Nanoparticles

被引:0
作者
Kuzma, Dominika [1 ]
Pastukh, Oleksandr [1 ]
Zielinski, Piotr [1 ]
机构
[1] Polish Acad Sci, Inst Nucl Phys, PL-31342 Krakow, Poland
关键词
nanolithography; magnetic nanoparticles; domain walls; vortices; magnonic structures; MAGNETIC NANOPARTICLES; FILMS;
D O I
10.3390/cryst14040375
中图分类号
O7 [晶体学];
学科分类号
0702 ; 070205 ; 0703 ; 080501 ;
摘要
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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页数:16
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