Stabilization of the oxygen concentration in La0.3Sr0.7CoO3−δ thin films by 3 nm thin LaAlO3 capping layer
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216224%3A14310%2F22%3A00128082" target="_blank" >RIV/00216224:14310/22:00128082 - isvavai.cz</a>
Result on the web
<a href="https://arxiv.org/pdf/2201.04854.pdf" target="_blank" >https://arxiv.org/pdf/2201.04854.pdf</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1016/j.tsf.2022.139438" target="_blank" >10.1016/j.tsf.2022.139438</a>
Alternative languages
Result language
angličtina
Original language name
Stabilization of the oxygen concentration in La0.3Sr0.7CoO3−δ thin films by 3 nm thin LaAlO3 capping layer
Original language description
We prepared La0.3Sr0.7CoO3−δ thin films by pulsed laser deposition on (LaAlO3)0.3(Sr2TaAlO6)0.7 substrates with and without a protective LaAlO3 capping layer and investigated their structural and magnetic properties. We observed that, in the uncapped films, the Curie temperature strongly decreased after annealing in helium atmosphere, and it significantly decreased even in samples stored for several weeks at room temperature. The decrease of the Currie temperature is caused by an increase of the concentration of oxygen vacancies, δ. However, we show that already a 3 nm thin LaAlO3 capping layer can essentially conserve δ at room temperature, and it considerably slows down the formation of oxygen vacancies at elevated temperatures.
Czech name
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Czech description
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Classification
Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
10302 - Condensed matter physics (including formerly solid state physics, supercond.)
Result continuities
Project
Result was created during the realization of more than one project. More information in the Projects tab.
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)
Others
Publication year
2022
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Thin Solid Films
ISSN
0040-6090
e-ISSN
1879-2731
Volume of the periodical
759
Issue of the periodical within the volume
October
Country of publishing house
CH - SWITZERLAND
Number of pages
5
Pages from-to
1-5
UT code for WoS article
000869931300002
EID of the result in the Scopus database
2-s2.0-85138044648