Ferroelectric phase transition in polycrystalline KTaO3 thin film revealed by terahertz spectroscopy
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68378271%3A_____%2F11%3A00373954" target="_blank" >RIV/68378271:_____/11:00373954 - isvavai.cz</a>
Result on the web
<a href="http://dx.doi.org/10.1063/1.3624710" target="_blank" >http://dx.doi.org/10.1063/1.3624710</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1063/1.3624710" target="_blank" >10.1063/1.3624710</a>
Alternative languages
Result language
angličtina
Original language name
Ferroelectric phase transition in polycrystalline KTaO3 thin film revealed by terahertz spectroscopy
Original language description
KTaO3 single crystal is an archetypal incipient ferroelectric in which a long-range ferroelectric order does not establish at low temperatures owing to quantum fluctuations. We report on a strong evidence of the ferroelectric phase transition near 60 K revealed by terahertz spectroscopy and microwave permittivity measurements of a polycrystalline KTaO3 thin film on (0001) sapphire substrate prepared by chemical solution deposition. The soft mode behavior is clearly observed in the terahertz (THz) spectra with a minimum frequency at 60 K. At the same temperature microwave permittivity maximum appears. The THz spectra strongly resemble that of strained epitaxial SrTiO3/DyScO3 films: the ferroelectric soft mode is linearly coupled to a central peak whichis silent in the paraelectric phase and it becomes coupled to the polarization below the ferroelectric transition temperature with a progressively increasing bare strength.
Czech name
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Czech description
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Classification
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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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)<br>Z - Vyzkumny zamer (s odkazem do CEZ)
Others
Publication year
2011
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Applied Physics Letters
ISSN
0003-6951
e-ISSN
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Volume of the periodical
99
Issue of the periodical within the volume
5
Country of publishing house
US - UNITED STATES
Number of pages
3
Pages from-to
"052908/1"-"052908/3"
UT code for WoS article
000293617300062
EID of the result in the Scopus database
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