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Anisotropy of Assemblies of Densely Packed Co-Alloy Nanoparticles Embedded in Carbon Nanotubes

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dc.contributor.authorPrischepa, S. L.
dc.contributor.authorDanilyuk, A. L.
dc.contributor.authorKukharev, A. V.
dc.contributor.authorCojocaru, C. S.
dc.contributor.authorKargin, N. I.
dc.contributor.authorПрищепа, Сергей Леонидович
dc.contributor.authorКаргин, Николай Иванович
dc.date.accessioned2024-11-21T11:09:24Z
dc.date.available2024-11-21T11:09:24Z
dc.date.issued2019
dc.description.abstractIEEEWe report on the magnetic properties of an array of binary metal CoFe, CoNi and CoPt nanoparticles (NPs) embedded inside vertically-oriented carbon nanotubes (CNTs). Samples were synthesized by chemical vapor deposition activated by current discharge plasma and hot filaments. Assemblies of Co-based catalytic NPs have been preliminary formed on SiO2/Si substrates by sputtering of ultrathin films followed by reduction in a H2/NH3 mixture. As a result of the CNT growth, each CNT contained only one ferromagnet top-located NP. For all samples the easy axis of magnetization was oriented along the CNT axis. Using the obtained experimental data and the random anisotropy model, the magnetic parameters like the effective anisotropy constant, the contribution of dipole interaction, shape, magnetocrystalline and magnetoelastic anisotropy were estimated. It is shown that the latter contribution of anisotropy is decisive. From the obtained magnetoelasticity the stresses in NPs embedded inside CNTs were determined. Finally, the magnetization distribution in CoFe, CoNi and CoPt NPs was simulated considering the magnetoelastic contribution.
dc.identifier.citationAnisotropy of Assemblies of Densely Packed Co-Alloy Nanoparticles Embedded in Carbon Nanotubes / Prischepa, S.L. [et al.] // IEEE Magnetics Letters. - 2019. - 10.1109/LMAG.2019.2933380
dc.identifier.doi10.1109/LMAG.2019.2933380
dc.identifier.urihttps://www.doi.org/10.1109/LMAG.2019.2933380
dc.identifier.urihttps://www.scopus.com/record/display.uri?eid=2-s2.0-85078692707&origin=resultslist
dc.identifier.urihttp://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=Alerting&SrcApp=Alerting&DestApp=WOS_CPL&DestLinkType=FullRecord&UT=WOS:000482586700001
dc.identifier.urihttps://openrepository.mephi.ru/handle/123456789/18560
dc.relation.ispartofIEEE Magnetics Letters
dc.titleAnisotropy of Assemblies of Densely Packed Co-Alloy Nanoparticles Embedded in Carbon Nanotubes
dc.typeArticle
dspace.entity.typePublication
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