The variation of PbTiO3 bandgap at ferroelectric phase transition

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68378271%3A_____%2F16%3A00465090" target="_blank" >RIV/68378271:_____/16:00465090 - isvavai.cz</a>
Result on the web
<a href="http://dx.doi.org/10.1088/0953-8984/28/2/025501" target="_blank" >http://dx.doi.org/10.1088/0953-8984/28/2/025501</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1088/0953-8984/28/2/025501" target="_blank" >10.1088/0953-8984/28/2/025501</a>

Result language
angličtina
Original language name
The variation of PbTiO3 bandgap at ferroelectric phase transition
Original language description
Optical properties of the PbTiO3 thin films fabricated by chemical solution deposition have been measured with variable angle spectroscopic ellipsometry in the spectral range of 1–6 eV functions and band gap energy were determined in the whole temperature range. The direct band gap varies from the value 3.88 eV at room temperature to the value 3.67 eV just above the phase transition. The temperature dependence of the film lattice parameters was also measured by x-ray and it shows a strong correlation with the band gap. The comparison of experimental data with ab initio electronic structure calculations simulating the temperature development of dielectric function and band gap is also presented.
Czech name
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Czech description
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Type
J<sub>x</sub> - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)
CEP classification
BM - Solid-state physics and magnetism
OECD FORD branch
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Project
<a href="/en/project/GAP204%2F11%2F1011" target="_blank" >GAP204/11/1011: Infrared study of strained ferroelectric superlattices</a><br>
Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year
2016
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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