About: Exchange bias in UO2/Fe3O4 thin films above the Néel temperature of UO2./sub

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About: Exchange bias in UO2/Fe3O4 thin films above the Néel temperature of UO2./sub Goto Sponge NotDistinct Permalink

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rdf:type	skos:Concept http://linked.opendata.cz/ontology/domain/vavai/Vysledek
Description	Exchange bias (EB) was investigated on heterostructures consisting of a stoichiometric UO2 film grown epitaxially on a LAO substrate and covered with highly textured Fe3O4 layers of variable thickness. EB reaching 2.6 kOe was observed at lowest temperatures in a bilayer with the thinnest Fe3O4. Magnetization measurements demonstrate that a remarkably large EB is present at temperatures higher than the bulk Neel temperature of UO2. The effects is complex: we suggest that it is provided both by strong exchange coupling between UO2 and Fe3O4 and by EB within magnetite. The former can be caused by proximity effects combined with a magnetic anisotropy of UO2, persisting above a continuous magnetic-ordering transformation. For magnetite, the results indicate the presence of pinned moments up to 120 K, that is a temperature of Verwey transition. Exchange bias (EB) was investigated on heterostructures consisting of a stoichiometric UO2 film grown epitaxially on a LAO substrate and covered with highly textured Fe3O4 layers of variable thickness. EB reaching 2.6 kOe was observed at lowest temperatures in a bilayer with the thinnest Fe3O4. Magnetization measurements demonstrate that a remarkably large EB is present at temperatures higher than the bulk Neel temperature of UO2. The effects is complex: we suggest that it is provided both by strong exchange coupling between UO2 and Fe3O4 and by EB within magnetite. The former can be caused by proximity effects combined with a magnetic anisotropy of UO2, persisting above a continuous magnetic-ordering transformation. For magnetite, the results indicate the presence of pinned moments up to 120 K, that is a temperature of Verwey transition. (en)
Title	Exchange bias in UO2/Fe3O4 thin films above the Néel temperature of UO2./sub Exchange bias in UO2/Fe3O4 thin films above the Néel temperature of UO2./sub (en)
skos:prefLabel	Exchange bias in UO2/Fe3O4 thin films above the Néel temperature of UO2./sub Exchange bias in UO2/Fe3O4 thin films above the Néel temperature of UO2./sub (en)
skos:notation	RIV/68378271:_____/14:00434826!RIV15-GA0-68378271
http://linked.open...avai/riv/aktivita	I P
http://linked.open...avai/riv/aktivity	I, P(GP13-25866P)
http://linked.open...iv/cisloPeriodika	12
http://linked.open...vai/riv/dodaniDat	2015
http://linked.open...aciTvurceVysledku	Tereshina, Evgeniya
http://linked.open.../riv/druhVysledku	J - Článek v odborném periodiku
http://linked.open...iv/duvernostUdaju	S - Úplné a pravdivé údaje nepodléhající ochraně podle zvláštních právních předpisů
http://linked.open...titaPredkladatele	Fyzikální ústav AV ČR, v. v. i.
http://linked.open...dnocenehoVysledku	15671
http://linked.open...ai/riv/idVysledku	RIV/68378271:_____/14:00434826
http://linked.open...riv/jazykVysledku	eng - angličtina
http://linked.open.../riv/klicovaSlova	exchange bias effect; uranium dioxide; magnetite (en)
http://linked.open.../riv/klicoveSlovo	uranium dioxide magnetite exchange bias effect
http://linked.open...odStatuVydavatele	US - Spojené státy americké
http://linked.open...ontrolniKodProRIV	[2CA1FC489998]
http://linked.open...i/riv/nazevZdroje	Applied Physics Letters
http://linked.open...in/vavai/riv/obor	BM
http://linked.open...ichTvurcuVysledku	1 (xsd:int)
http://linked.open...cetTvurcuVysledku	7 (xsd:int)
http://linked.open...vavai/riv/projekt	Uranium-based multilayers: structure, magnetism and related electronic properties
http://linked.open...UplatneniVysledku	2014
http://linked.open...v/svazekPeriodika	105
http://linked.open...iv/tvurceVysledku	Gouder, T. Havela, L. Caciuffo, R. Tereshina, Evgeniya Daniš, S. Bao, Z. Kuebel, C.
http://linked.open...ain/vavai/riv/wos	000343004400049
issn	0003-6951
number of pages	5 (xsd:int)
http://bibframe.org/vocab/doi	10.1063/1.4896635

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