In situ anion-doped epitaxial strontium titanate films
Tyunina, M.; Pacherova, O.; Nepomniashchaia, N.; Vetokhina, V.; Cichon, S.; Kocourek, T.; Dejneka, A. (2020-10-08)
Tyunina, M.
Pacherova, O.
Nepomniashchaia, N.
Vetokhina, V.
Cichon, S.
Kocourek, T.
Dejneka, A.
Royal Society of Chemistry
08.10.2020
Phys. Chem. Chem. Phys., 2020, 22, 24796
https://creativecommons.org/licenses/by-nc/3.0/
© The Authors 2020. Open Access Article. Published on 08 October 2020. Downloaded on 12/10/2020 11:35:04 AM. This article is licensed under a Creative Commons Attribution-NonCommercial 3.0 Unported Licence
https://creativecommons.org/licenses/by-nc/3.0/
© The Authors 2020. Open Access Article. Published on 08 October 2020. Downloaded on 12/10/2020 11:35:04 AM. This article is licensed under a Creative Commons Attribution-NonCommercial 3.0 Unported Licence
https://creativecommons.org/licenses/by-nc/3.0/
Julkaisun pysyvä osoite on
https://urn.fi/URN:NBN:fi-fe20201210100244
https://urn.fi/URN:NBN:fi-fe20201210100244
Tiivistelmä
Abstract
Misfit strains arising from a film–substrate mismatch can induce novel phases and properties in the epitaxial films of perovskite oxides. Here we employ yet another effect, namely, strain-assisted formation of oxygen vacancies. We demonstrate the misfit-promoted presence of oxygen vacancies and related substitutional incorporation of anion dopants in the epitaxial films of archetypal perovskite oxide SrTiO3. Both the oxygen vacancies and hydrogen or nitrogen dopants are introduced in situ during the pulsed-laser deposition of the films using compressive substrates. The films exhibit peculiar chemical expansion and optical properties, which are consistent with substitutional anion doping.
Kokoelmat
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