Effect of doping SrTiO3 with Nb studied with wide-range spectroscopic ellipsometry
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68378271%3A_____%2F23%3A00574599" target="_blank" >RIV/68378271:_____/23:00574599 - isvavai.cz</a>
Alternative codes found
RIV/68407700:21340/23:00367615
Result on the web
<a href="https://hdl.handle.net/11104/0349501" target="_blank" >https://hdl.handle.net/11104/0349501</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1063/5.0155121" target="_blank" >10.1063/5.0155121</a>
Alternative languages
Result language
angličtina
Original language name
Effect of doping SrTiO3 with Nb studied with wide-range spectroscopic ellipsometry
Original language description
The low-temperature optical properties of a SrTiO3 crystal doped with 0.7% wt. Nb and a pure SrTiO3 reference crystal were studied using spectroscopic ellipsometry. The optical constants and dielectric functions were obtained in the spectral range of 0.8–8.8 eV at temperatures from 10 to 300 K, and the optical conductivity was obtained in the spectral range of 0.03–1 eV at 300 K. Analysis of the optical conductivity spectra in the infrared spectral range confirmed the presence of free electrons and additional absorption hump between 0.1 and 0.4 eV (806 and 3226 cm−1 ) in doped SrTiO3 and optical phonons in both doped and undoped SrTiO3. The performed analysis of optical absorption spectra in the range 0.8–8.8 eV revealed frustration of the indirect bandgap and an increase in the direct bandgap energy by ∼0.03 eV in Nb-doped SrTiO3 , compared to undoped SrTiO3 over the whole temperature range.
Czech name
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Czech description
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Classification
Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
10302 - Condensed matter physics (including formerly solid state physics, supercond.)
Result continuities
Project
Result was created during the realization of more than one project. More information in the Projects tab.
Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace
Others
Publication year
2023
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Journal of Applied Physics
ISSN
0021-8979
e-ISSN
1089-7550
Volume of the periodical
134
Issue of the periodical within the volume
3
Country of publishing house
US - UNITED STATES
Number of pages
10
Pages from-to
034102
UT code for WoS article
001031763700004
EID of the result in the Scopus database
2-s2.0-85166140905