Optical revelation of defects in epitaxial barium titanate films

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68378271%3A_____%2F19%3A00505522" target="_blank" >RIV/68378271:_____/19:00505522 - isvavai.cz</a>
Result on the web
<a href="http://hdl.handle.net/11104/0297008" target="_blank" >http://hdl.handle.net/11104/0297008</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1039/c9cp00923j" target="_blank" >10.1039/c9cp00923j</a>

Result language
angličtina
Original language name
Optical revelation of defects in epitaxial barium titanate films
Original language description
Allying epitaxial strain and synthesis conditions allows for the introduction of specific point defects in perovskite oxide films. In ferroelectric films, such defects lead to essential polar and electronic properties, which can enable advanced applications. Here, to elucidate the nature of the defects, optical constants are investigated in the spectral range of 0.7–8.8 eV in epitaxial ferroelectric BaTiO3 films, which are synthesized under different conditions. It is demonstrated that oxygen-vacancy-related defects are responsible for a peculiar transition below the bandgap at B2.7–2.9 eV and significant blueshifts of B0.3–0.4 eV of the gap and the main interband transitions. These observations suggest that the defects are dipolar complexes comprising titanium cations and oxygen vacancies (Ti3+–VO).
Czech name
—
Czech description
—

Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
—
OECD FORD branch
10302 - Condensed matter physics (including formerly solid state physics, supercond.)

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)

Publication year
2019
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Similar results(10)