Anisotropic strain in rare-earth substituted ceria thin films probed by polarized Raman spectroscopy and first-principles calculations
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68378271%3A_____%2F20%3A00537684" target="_blank" >RIV/68378271:_____/20:00537684 - isvavai.cz</a>
Result on the web
<a href="https://doi.org/10.1021/acsami.0c14249" target="_blank" >https://doi.org/10.1021/acsami.0c14249</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1021/acsami.0c14249" target="_blank" >10.1021/acsami.0c14249</a>
Alternative languages
Result language
angličtina
Original language name
Anisotropic strain in rare-earth substituted ceria thin films probed by polarized Raman spectroscopy and first-principles calculations
Original language description
We propose a method for measuring strain in rare-earth doped ceria thin films by polarized Raman spectroscopy. We study epitaxial CeO2 films substituted by La, Gd, and Yb grown on MgO substrates with BaZrO3 and SrTiO3 interlayers, where different levels of strain are generated by annealing at distinct temperatures. The films show in-plane compression and out-of-plane expansion, resulting in a lowering from the bulk cubic to tetragonal lattice symmetry. This leads to the splitting of the F2g Raman mode in the cubic phase to B2g and Eg modes in the tetragonal lattice. The symmetry and frequency of these modes are determined by polarized Raman in the backscattering and right-angle scattering geometries as well as by first-principal calculations. The frequency splitting of the two modes is proportional to the strain measured by X-ray diffraction and its magnitude agrees with first-principles calculations.
Czech name
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Czech description
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Classification
Type
J<sub>SC</sub> - Article in a specialist periodical, which is included in the SCOPUS database
CEP classification
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OECD FORD branch
10302 - Condensed matter physics (including formerly solid state physics, supercond.)
Result continuities
Project
<a href="/en/project/GX19-28594X" target="_blank" >GX19-28594X: Ferroelectric skyrmions</a><br>
Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace
Others
Publication year
2020
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
ACS Applied Materials and Interfaces
ISSN
1944-8244
e-ISSN
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Volume of the periodical
12
Issue of the periodical within the volume
50
Country of publishing house
US - UNITED STATES
Number of pages
9
Pages from-to
56251-56259
UT code for WoS article
000600202300068
EID of the result in the Scopus database
2-s2.0-85097784735