University of Oulu

Phys. Chem. Chem. Phys., 2020, 22, 24796

In situ anion-doped epitaxial strontium titanate films

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Author: Tyunina, M.1,2; Pacherova, O.2; Nepomniashchaia, N.2;
Organizations: 1Microelectronics Research Unit, Faculty of Information Technology and Electrical Engineering, University of Oulu, P. O. Box 4500, FI-90014, Finland
2Institute of Physics of the Czech Academy of Sciences, Na Slovance 2, 18221 Prague, Czech Republic
Format: article
Version: published version
Access: open
Online Access: PDF Full Text (PDF, 2.1 MB)
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Language: English
Published: Royal Society of Chemistry, 2020
Publish Date: 2020-12-10


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.

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Series: PCCP. Physical chemistry chemical physics
ISSN: 1463-9076
ISSN-E: 1463-9084
ISSN-L: 1463-9076
Volume: 22
Issue: 42
Pages: 24796 - 24800
DOI: 10.1039/d0cp03644g
Type of Publication: A1 Journal article – refereed
Field of Science: 114 Physical sciences
116 Chemical sciences
216 Materials engineering
Funding: The authors acknowledge support from the Czech Science Foundation (Grant No. 19-09671S) and the European Structural and Investment Funds and the Ministry of Education, Youth and Sports of the Czech Republic through Programme ‘‘Research, Development and Education’’ (Project No. SOLID21 – CZ.02.1.01/0.0/0.0/16_019/0000760).
Copyright information: © 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