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

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68378271%3A_____%2F14%3A00434826" target="_blank" >RIV/68378271:_____/14:00434826 - isvavai.cz</a>

Result on the web

<a href="http://dx.doi.org/10.1063/1.4896635" target="_blank" >http://dx.doi.org/10.1063/1.4896635</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1063/1.4896635" target="_blank" >10.1063/1.4896635</a>

Result language

angličtina

Original language name

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

Original language 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 indicatethe presence of pinned moments up to 120 K, that is a temperature of Verwey transition.

Czech name

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Czech description

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Type

J_x - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)

CEP classification

BM - Solid-state physics and magnetism

OECD FORD branch

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Project

<a href="/en/project/GP13-25866P" target="_blank" >GP13-25866P: Uranium-based multilayers: structure, magnetism and related electronic properties</a><br>

Continuities

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year

2014

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Name of the periodical

Applied Physics Letters

ISSN

0003-6951

e-ISSN

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Volume of the periodical

105

Issue of the periodical within the volume

12

Country of publishing house

US - UNITED STATES

Number of pages

5

Pages from-to

"122405-1"-"122405-5"

UT code for WoS article

000343004400049

EID of the result in the Scopus database

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