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Epitaxial growth of perovskite oxide films facilitated by oxygen vacancies

  1. 1.
    0552097 - FZÚ 2022 RIV GB eng J - Článek v odborném periodiku
    Tyunina, Marina - Rusevich, L.L. - Kotomin, E.A. - Pacherová, Oliva - Kocourek, Tomáš - Dejneka, Alexandr
    Epitaxial growth of perovskite oxide films facilitated by oxygen vacancies.
    Journal of Materials Chemistry C. Roč. 9, č. 5 (2021), s. 1693-1700. ISSN 2050-7526. E-ISSN 2050-7534
    Grant CEP: GA MŠMT(CZ) EF16_019/0000760; GA ČR(CZ) GA19-09671S
    Grant ostatní: OP VVV - SOLID21(XE) CZ.02.1.01/0.0/0.0/16_019/0000760
    Institucionální podpora: RVO:68378271
    Klíčová slova: perovskite oxide films * oxygen vacancies
    Obor OECD: Condensed matter physics (including formerly solid state physics, supercond.)
    Impakt faktor: 8.067, rok: 2021
    Způsob publikování: Open access

    Single-crystal epitaxial films of technologically important and scientifically intriguing multifunctional ABO3 perovskite-type metal oxides are essential for advanced applications and understanding of these materials. In such films, a film-substrate misfit strain enables unprecedented crystal phases and unique properties that are not available in their bulk counterparts. However, the prerequisite growth of strained epitaxial films is fundamentally restricted by misfit relaxation. Here we demonstrate that introduction of a small oxygen deficiency concurrently stabilizes epitaxy and increases lattice strain in thin films of archetypal perovskite oxide SrTiO3. By combining experimental and theoretical methods, we found that lattice distortions around oxygen vacancies lead to anisotropic local stresses, which interact with the misfit strain in epitaxial films.
    Trvalý link: http://hdl.handle.net/11104/0327245

     
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