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Multi-domain structures in spheroidal Co nanoparticles.
Sci Rep. 2020 Jun 23; 10(1):10173.SR

Abstract

The structure of multi-domain micromagnetic states in hcp cobalt nanoparticles of spheroidal shape has been studied using numerical simulation in the range of diameters 20-200 nm. The single-domain diameters of the particles are determined depending on their aspect ratio. The complicated vortex structure of domain walls for two- and three-domain micromagnetic configurations is investigated. It has been shown that three domain states are actually strongly deformed two vortex states. In hcp cobalt particles of sufficiently large sizes two types of three-domain micromagnetic states with close total energies have been obtained. They differ in different magnetization directions of the exchange cores of the vortex domain walls. The remanent magnetization of particles has been calculated for two- and three-domain micromagnetic states. The single-domain diameters of fcc cobalt nanoparticles with cubic type of magnetic anisotropy were also calculated.

Authors+Show Affiliations

National University of Science and Technology «MISiS», 119049, Moscow, Russia. usov@obninsk.ru. Pushkov Institute of Terrestrial Magnetism, Ionosphere and Radio Wave Propagation, Russian Academy of Sciences, (IZMIRAN), 108840, Troitsk, Moscow, Russia. usov@obninsk.ru.Pushkov Institute of Terrestrial Magnetism, Ionosphere and Radio Wave Propagation, Russian Academy of Sciences, (IZMIRAN), 108840, Troitsk, Moscow, Russia.

Pub Type(s)

Journal Article

Language

eng

PubMed ID

32576958

Citation

Usov, N A., and M S. Nesmeyanov. "Multi-domain Structures in Spheroidal Co Nanoparticles." Scientific Reports, vol. 10, no. 1, 2020, p. 10173.
Usov NA, Nesmeyanov MS. Multi-domain structures in spheroidal Co nanoparticles. Sci Rep. 2020;10(1):10173.
Usov, N. A., & Nesmeyanov, M. S. (2020). Multi-domain structures in spheroidal Co nanoparticles. Scientific Reports, 10(1), 10173. https://doi.org/10.1038/s41598-020-67173-5
Usov NA, Nesmeyanov MS. Multi-domain Structures in Spheroidal Co Nanoparticles. Sci Rep. 2020 Jun 23;10(1):10173. PubMed PMID: 32576958.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Multi-domain structures in spheroidal Co nanoparticles. AU - Usov,N A, AU - Nesmeyanov,M S, Y1 - 2020/06/23/ PY - 2019/11/18/received PY - 2020/05/28/accepted PY - 2020/6/25/entrez PY - 2020/6/25/pubmed PY - 2020/6/25/medline SP - 10173 EP - 10173 JF - Scientific reports JO - Sci Rep VL - 10 IS - 1 N2 - The structure of multi-domain micromagnetic states in hcp cobalt nanoparticles of spheroidal shape has been studied using numerical simulation in the range of diameters 20-200 nm. The single-domain diameters of the particles are determined depending on their aspect ratio. The complicated vortex structure of domain walls for two- and three-domain micromagnetic configurations is investigated. It has been shown that three domain states are actually strongly deformed two vortex states. In hcp cobalt particles of sufficiently large sizes two types of three-domain micromagnetic states with close total energies have been obtained. They differ in different magnetization directions of the exchange cores of the vortex domain walls. The remanent magnetization of particles has been calculated for two- and three-domain micromagnetic states. The single-domain diameters of fcc cobalt nanoparticles with cubic type of magnetic anisotropy were also calculated. SN - 2045-2322 UR - https://www.unboundmedicine.com/medline/citation/32576958/Multi-domain_structures_in_spheroidal_Co_nanoparticles L2 - http://dx.doi.org/10.1038/s41598-020-67173-5 DB - PRIME DP - Unbound Medicine ER -
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