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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

  • Czech description

Classification

  • Type

    J<sub>SC</sub> - Article in a specialist periodical, which is included in the SCOPUS database

  • CEP classification

  • 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

  • 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