In situ anion-doped epitaxial strontium titanate films

0538768 - FZÚ 2021 RIV GB eng J - Journal Article
Tyunina, Marina - Pacherová, Oliva - Nepomniashchaia, Natalia - Vetokhina, Volha - Cichoň, Stanislav - Kocourek, Tomáš - Dejneka, Alexandr
In situ anion-doped epitaxial strontium titanate films.
Physical Chemistry Chemical Physics. Roč. 22, č. 42 (2020), s. 24796-24800. ISSN 1463-9076. E-ISSN 1463-9084
R&D Projects: GA MŠMT(CZ) EF16_019/0000760; GA ČR(CZ) GA19-09671S
Grant - others:OP VVV - SOLID21(XE) CZ.02.1.01/0.0/0.0/16_019/0000760
Institutional support: RVO:68378271
Keywords : anion-doped * in - situ * epitaxial * strontium titanate films
OECD category: Condensed matter physics (including formerly solid state physics, supercond.)
Impact factor: 3.676, year: 2020
Method of publishing: Open access

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.

Permanent Link: http://hdl.handle.net/11104/0316500