Tailoring magnetic properties by tuning the interface in a Pt/Co/Pt/IrMn system with perpendicular and double-exchange biases

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dc.authoridKOCAMAN, BAYRAM/0000-0002-9439-3604
dc.contributor.authorKocaman, Bayram
dc.date.accessioned2024-12-24T19:28:27Z
dc.date.available2024-12-24T19:28:27Z
dc.date.issued2022
dc.departmentSiirt Üniversitesi
dc.description.abstractWe prepared Pt/Co/Pt(t (Pt))/IrMn heterostructures with perpendicular exchange bias (PEB) by inserting a Pt spacer between Co and IrMn. X-ray diffraction demonstrates that the IrMn and Pt layers exhibit a (111) texture promoting PEB. Here, the samples for various Pt spacer thicknesses exhibit double-shifted hysteresis loops with the coexistence of positive and negative exchange biases (EBs). Magnetic force microscopy measurement indicates that this behavior in the as-grown state results from the formation of an antiferromagnetic bidomain state with opposite signs. Also, the magnetic loop behaviors can be tailored by tuning the EB, coercive and switching fields which are sensitive to sub-nanometer changes in the spacer layer (Pt) thickness. It is found that the optimum thickness of the Pt layer is 0.8 nm by considering a well-defined single remanence state, where H (EB) is about seven times as large as the coercivity. Our results indicate that large EB and rather small coercivity necessary for the single-remanence state in the double-shifted Pt/Co/Pt/IrMn systems can be achieved by tuning the interface at atomic level. Moreover, magnetic properties were analyzed in detail depending on Pt space spacer layer thickness between Co and IrMn layers. These results may be useful for potential applications in future multilevel memory devices.
dc.identifier.doi10.1088/1361-6463/ac5b45
dc.identifier.issn0022-3727
dc.identifier.issn1361-6463
dc.identifier.issue24
dc.identifier.scopus2-s2.0-85127364949
dc.identifier.scopusqualityQ1
dc.identifier.urihttps://doi.org/10.1088/1361-6463/ac5b45
dc.identifier.urihttps://hdl.handle.net/20.500.12604/7068
dc.identifier.volume55
dc.identifier.wosWOS:000771743100001
dc.identifier.wosqualityQ2
dc.indekslendigikaynakWeb of Science
dc.indekslendigikaynakScopus
dc.language.isoen
dc.publisherIop Publishing Ltd
dc.relation.ispartofJournal of Physics D-Applied Physics
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanı
dc.rightsinfo:eu-repo/semantics/closedAccess
dc.snmzKA_20241222
dc.subjectdouble-shifted magnetic hysteresis loops
dc.subjectperpendicular exchange bias
dc.subjectbi-domain state
dc.subjectPt
dc.subjectCo
dc.subjectIrMn
dc.subjectsingle remanence state
dc.titleTailoring magnetic properties by tuning the interface in a Pt/Co/Pt/IrMn system with perpendicular and double-exchange biases
dc.typeArticle

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