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Heating ability of elongated magnetic nanoparticles

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dc.contributor.authorGubanova, E. M.
dc.contributor.authorUsov, N. A.
dc.contributor.authorOleinikov, V. A.
dc.contributor.authorГубанова, Елизавета Михайловна
dc.contributor.authorУсов, Николай Александрович
dc.contributor.authorОлейников, Владимир Александрович
dc.date.accessioned2024-11-30T01:27:53Z
dc.date.available2024-11-30T01:27:53Z
dc.date.issued2021
dc.description.abstractLow-frequency hysteresis loops and specific absorption rate (SAR) of various assemblies of elongated spheroidal magnetite nanoparticles have been calculated for a range of particle semiaxis ratios a/b = 1.0-3.0. The SAR of a dilute randomly oriented assembly of magnetite nanoparticles in an alternating magnetic field of moderate frequency, f = 300 kHz, and amplitude H0 = 100-200 Oe is shown to decrease significantly with an increase in the aspect ratio of nanoparticles. In addition, there is a narrowing and shift of the intervals of optimal particle diameters towards smaller particle sizes. However, the orientation of a dilute assembly of elongated nanoparticles in a magnetic field leads to an almost twofold increase in SAR at the same frequency and amplitude of the alternating magnetic field, the range of optimal particle diameters remaining unchanged. The effect of the magneto-dipole interaction on the SAR of a dilute assembly of oriented clusters of elongated magnetite nanoparticles has also been investigated depending on the volume fraction of nanoparticles in a cluster. It has been found that the SAR of the assembly of oriented clusters decreases by approximately an order of magnitude with an increase in the volume fraction of nanoparticles in a cluster in the range of 0.04-0.2.
dc.format.extentС. 1404-1412
dc.identifier.citationHeating ability of elongated magnetic nanoparticles / Gubanova, EM, Usov, NA, Oleinikov, VA // Beilstein Journal of Nanotechnology. - 2021. - 12. - P. 1404-1412. - 10.3762/bjnano.12.104
dc.identifier.doi10.3762/bjnano.12.104
dc.identifier.urihttps://www.doi.org/10.3762/bjnano.12.104
dc.identifier.urihttps://www.scopus.com/record/display.uri?eid=2-s2.0-85124000749&origin=resultslist
dc.identifier.urihttp://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=Alerting&SrcApp=Alerting&DestApp=WOS_CPL&DestLinkType=FullRecord&UT=WOS:000737311000001
dc.identifier.urihttps://openrepository.mephi.ru/handle/123456789/25187
dc.relation.ispartofBeilstein Journal of Nanotechnology
dc.titleHeating ability of elongated magnetic nanoparticles
dc.typeArticle
dspace.entity.typePublication
oaire.citation.volume12
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