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.
机构:
Institute of Microelectronics Technology and High-Purity Materials, Russian Academy of Sciences, Chernogolovka, Moscow oblastInstitute of Microelectronics Technology and High-Purity Materials, Russian Academy of Sciences, Chernogolovka, Moscow oblast
Fomin L.A.
Malikov I.V.
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机构:
Institute of Microelectronics Technology and High-Purity Materials, Russian Academy of Sciences, Chernogolovka, Moscow oblastInstitute of Microelectronics Technology and High-Purity Materials, Russian Academy of Sciences, Chernogolovka, Moscow oblast
Malikov I.V.
Vinnichenko V.Yu.
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机构:
Institute of Microelectronics Technology and High-Purity Materials, Russian Academy of Sciences, Chernogolovka, Moscow oblastInstitute of Microelectronics Technology and High-Purity Materials, Russian Academy of Sciences, Chernogolovka, Moscow oblast
Vinnichenko V.Yu.
Mikhailov G.M.
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机构:
Institute of Microelectronics Technology and High-Purity Materials, Russian Academy of Sciences, Chernogolovka, Moscow oblastInstitute of Microelectronics Technology and High-Purity Materials, Russian Academy of Sciences, Chernogolovka, Moscow oblast
机构:
Inst Mil Engn, Secao Engn Mecan & Mat, BR-22290270 Rio De Janeiro, RJ, BrazilInst Mil Engn, Secao Engn Mecan & Mat, BR-22290270 Rio De Janeiro, RJ, Brazil
de Biasi, R. S.
Cardoso, L. H. G.
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机构:
Inst Mil Engn, Secao Engn Mecan & Mat, BR-22290270 Rio De Janeiro, RJ, BrazilInst Mil Engn, Secao Engn Mecan & Mat, BR-22290270 Rio De Janeiro, RJ, Brazil