Derivative optical spectroscopy of thin films of alkaline-earth titanates: Critical points
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F49777513%3A23640%2F18%3A43955463" target="_blank" >RIV/49777513:23640/18:43955463 - isvavai.cz</a>
Result on the web
<a href="http://dx.doi.org/10.14311/APP.2018.20.0108" target="_blank" >http://dx.doi.org/10.14311/APP.2018.20.0108</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.14311/APP.2018.20.0108" target="_blank" >10.14311/APP.2018.20.0108</a>
Alternative languages
Result language
angličtina
Original language name
Derivative optical spectroscopy of thin films of alkaline-earth titanates: Critical points
Original language description
This paper analyzes UV Vis absorption spectra of thin films of alkaline-earth titanates (BaTiO3, SrTiO3 and BaSrTiO3) deposited by RF magnetron sputtering on SiO2 at different substrate temperatures. The Tauc procedure was used to determine optical band gaps for direct and indirect inter-band transitions. This procedure was accompanied by derivative spectroscopy useful in case of multi-component systems. Higher-order derivatives were used to find the so-called critical points related to the optical inter-band transitions at various regions in the Brillouin zone. Three critical points were identified in BST thin films spectra of dielectric function. All optical band gaps and energies of critical points were found to decrease with the substrate temperature at the deposition.
Czech name
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Czech description
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Classification
Type
D - Article in proceedings
CEP classification
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OECD FORD branch
10301 - Atomic, molecular and chemical physics (physics of atoms and molecules including collision, interaction with radiation, magnetic resonances, Mössbauer effect)
Result continuities
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)
Others
Publication year
2018
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Article name in the collection
AIP Conference Proceedings 2018
ISBN
978-0-7354-1712-0
ISSN
0094-243X
e-ISSN
—
Number of pages
6
Pages from-to
"NESTRÁNKOVÁNO"
Publisher name
American Institute of Physics Inc.
Place of publication
MELVILLE, NY 11
Event location
Strbske Pleso
Event date
Jun 20, 2018
Type of event by nationality
EUR - Evropská akce
UT code for WoS article
000443464900030