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Small-polaron conductivity in perovskite ferroelectric BaTiO3 films

The result's identifiers

  • Result code in IS VaVaI

    <a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68378271%3A_____%2F22%3A00566635" target="_blank" >RIV/68378271:_____/22:00566635 - isvavai.cz</a>

  • Result on the web

    <a href="https://doi.org/10.1063/5.0129831" target="_blank" >https://doi.org/10.1063/5.0129831</a>

  • DOI - Digital Object Identifier

    <a href="http://dx.doi.org/10.1063/5.0129831" target="_blank" >10.1063/5.0129831</a>

Alternative languages

  • Result language

    angličtina

  • Original language name

    Small-polaron conductivity in perovskite ferroelectric BaTiO3 films

  • Original language description

    Small-polaron hopping conductivity was evidenced and examined in various pulsed-laser-deposited films of ferroelectric BaTiO3 and reference films of SrTiO3. For this, AC conductivity was studied in a broad range of temperatures and frequencies for films sandwiched between the bottom and top electrodes. In the BaTiO3 films, with increasing temperature, a significant increase in activation energy for small-polaron hopping was found and ascribed to strong electron–phonon coupling and complex lattice oscillations therein. Plain relations of the activation energy to microstructure, composition, or phase transitions were lacking, which corroborated the critical role of phonons. Additionally, a phonon-less transport was detected. It was anticipated that owing to strong electron–phonon coupling, rich phonon ensembles, and coexistence of phonon-stimulated and phonon-less processes, the small-polaron conductivity can heavily vary in ferroelectric films that necessitates further studies.

  • Czech name

  • Czech description

Classification

  • Type

    J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database

  • CEP classification

  • OECD FORD branch

    10302 - Condensed matter physics (including formerly solid state physics, supercond.)

Result continuities

  • 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

Others

  • Publication year

    2022

  • 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

    1077-3118

  • Volume of the periodical

    121

  • Issue of the periodical within the volume

    20

  • Country of publishing house

    US - UNITED STATES

  • Number of pages

    5

  • Pages from-to

    202901

  • UT code for WoS article

    000886646400003

  • EID of the result in the Scopus database

    2-s2.0-85143979996