Influence of the central mode and soft phonon on the microwave dielectric loss near the strain-induced ferroelectric phase transitions in Srn+1TinO3n+1.

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68378271%3A_____%2F14%3A00435755" target="_blank" >RIV/68378271:_____/14:00435755 - isvavai.cz</a>
Result on the web
<a href="http://dx.doi.org/10.1103/PhysRevB.90.174105" target="_blank" >http://dx.doi.org/10.1103/PhysRevB.90.174105</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1103/PhysRevB.90.174105" target="_blank" >10.1103/PhysRevB.90.174105</a>

Result language
angličtina
Original language name
Influence of the central mode and soft phonon on the microwave dielectric loss near the strain-induced ferroelectric phase transitions in Srn+1TinO3n+1.
Original language description
We present microwave (MW), terahertz, and infrared spectra of strained Srn+1 Tin O3n+1 thin films deposited on (110)DyScO3. Near the ferroelectric phase transitions, we observe the splitting and shifting of phonon and central mode frequencies, demonstrating the change of crystal symmetry below TC. Moreover, our spectra reveal that the central mode contribution dominates MW loss. In the Sr7Ti6O19 thin film, the central mode vanishes at 300 K, explaining its low MW loss. Finally, we discuss the origin andgeneral conditions for the appearance of central modes near ferroelectric phase transitions.
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
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

Publication year
2014
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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