Exchange bias effect revealed by irreversible structural transformation between the HCP and FCC structures of Cobalt nanoparticles

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dc.contributor.authorYildiz, Yasin Gokturk
dc.date.accessioned2021-01-14T18:10:42Z
dc.date.available2021-01-14T18:10:42Z
dc.date.issued2020
dc.departmentKKÜ
dc.descriptionYILDIZ, Yasin Gokturk/0000-0002-1391-1888
dc.description.abstractIn this study, the exchange bias effect (EBE) revealed by the HCP-FCC structural phase transformation in Cobalt nanoparticles (CoNPs) are modeled and investigated by using the Ising model within the framework of the Effective Field Theory developed by Kaneyoshi. CoNPs are mixed (indistinguishable HCP and FCC) phase at T < 0.36 and T > Tc-FCC. For the non-structural transformation, CoNPs exhibit no exchange bias effect (H-EB = 0.0) and they have normal symmetric coercive field points. But, they have asymmetric coercive field points and they have an exchange bias field for the HCP -> FCC transformation or the inverse (HCP <- FCC). Additionally, an intersection point (Hi) revealed by EBE is obtained between the irreversible M-H curve of the FCC and HCP phase (Hi = Hc1(FCC) = -0.39 and -0.13). Our results show that the exchange bias effect strongly depends on their irreversible structural phase transformations in the materials.en_US
dc.identifier.citationBu makale açık erişimli değildir.en_US
dc.identifier.doi10.1080/01411594.2020.1743837
dc.identifier.endpage437en_US
dc.identifier.issn0141-1594
dc.identifier.issn1029-0338
dc.identifier.issue4en_US
dc.identifier.scopus2-s2.0-85082414246
dc.identifier.scopusqualityQ3
dc.identifier.startpage429en_US
dc.identifier.urihttps://doi.org/10.1080/01411594.2020.1743837
dc.identifier.urihttps://hdl.handle.net/20.500.12587/12741
dc.identifier.volume93en_US
dc.identifier.wosWOS:000521830900007
dc.identifier.wosqualityQ3
dc.indekslendigikaynakWeb of Science
dc.indekslendigikaynakScopus
dc.language.isoen
dc.publisherTAYLOR & FRANCIS LTDen_US
dc.relation.ispartofPHASE TRANSITIONS
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanıen_US
dc.rightsinfo:eu-repo/semantics/closedAccessen_US
dc.subjectExchange bias effecten_US
dc.subjectcobalten_US
dc.subjectHCP-FCC phaseen_US
dc.subjectphase transformationen_US
dc.subjectmagnetismen_US
dc.subjecteffective field theoryen_US
dc.titleExchange bias effect revealed by irreversible structural transformation between the HCP and FCC structures of Cobalt nanoparticlesen_US
dc.typeArticle

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