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Magnetic Hysteresis in Nanostructures with Thermally Controlled RKKY Coupling
KTH, School of Engineering Sciences (SCI), Applied Physics, Nanostructure Physics.ORCID iD: 0000-0001-5028-8928
KTH, School of Engineering Sciences (SCI), Applied Physics, Nanostructure Physics.
NAS Ukraine, Inst Magnetism, UA-03142 Kiev, Ukraine.;MES Ukraine, UA-03142 Kiev, Ukraine..
KTH, School of Engineering Sciences (SCI), Applied Physics, Nanostructure Physics.
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2018 (English)In: Nanoscale Research Letters, ISSN 1931-7573, E-ISSN 1556-276X, Vol. 13, article id 245Article in journal (Refereed) Published
Abstract [en]

Mechanisms of the recently demonstrated ex-situ thermal control of the indirect exchange coupling in magnetic multilayer are discussed for different designs of the spacer layer. Temperature-induced changes in the hysteresis of magnetization are shown to be associated with different types of competing interlayer exchange interactions. Theoretical analysis indicates that the measured step-like shape and hysteresis of the magnetization loops is due to local in-plane magnetic anisotropy of nano-crystallites within the strongly ferromagnetic films. Comparison of the experiment and theory is used to contrast the mechanisms of the magnetization switching based on the competition of (i) indirect (RKKY) and direct (non-RKKY) interlayer exchange interactions as well as (ii) indirect ferromagnetic and indirect antiferromagnetic (both of RKKY type) interlayer exchange. These results, detailing the rich magnetic phase space of the system, should help enable the practical use of RKKY for thermally switching the magnetization in magnetic multilayers.

Place, publisher, year, edition, pages
Springer, 2018. Vol. 13, article id 245
Keywords [en]
Magnetic multilayers, Indirect exchange coupling, Magnetization switching, Magnetic coercivity, Thermo-magnetic effects
National Category
Condensed Matter Physics
Identifiers
URN: urn:nbn:se:kth:diva-234599DOI: 10.1186/s11671-018-2669-0ISI: 000443039100003PubMedID: 30136038Scopus ID: 2-s2.0-85052080291OAI: oai:DiVA.org:kth-234599DiVA, id: diva2:1248301
Note

QC 20180914

Available from: 2018-09-14 Created: 2018-09-14 Last updated: 2018-09-14Bibliographically approved

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Polishchuk, DmytrTykhonenko-Polishchuk, YuliyaKravets, AnatoliiKorenivski, Vladislav

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