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Conductivity in ferroelectric barium titanate: electrons versus oxygen vacancies

The result's identifiers

  • Result code in IS VaVaI

    <a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68378271%3A_____%2F21%3A00552238" target="_blank" >RIV/68378271:_____/21:00552238 - isvavai.cz</a>

  • Result on the web

    <a href="https://doi.org/10.1109/TUFFC.2020.2978901" target="_blank" >https://doi.org/10.1109/TUFFC.2020.2978901</a>

  • DOI - Digital Object Identifier

    <a href="http://dx.doi.org/10.1109/TUFFC.2020.2978901" target="_blank" >10.1109/TUFFC.2020.2978901</a>

Alternative languages

  • Result language

    angličtina

  • Original language name

    Conductivity in ferroelectric barium titanate: electrons versus oxygen vacancies

  • Original language description

    Mobile oxygen vacancies are increasingly wider believed to be responsible for electrical conductivity in perovskite oxide ferroelectrics. Here, this hypothesis is debated. The small-signal conductivity is investigated in oxygen-deficient films of barium titanate, where oxygen vacancies are epitaxially clamped and immobile. The observed behavior of conductivity as a function of temperature and frequency evidences pure electronic processes. Importantly, it is shown that these processes mimic motion of oxygen vacancies, which are immobile. It is also demonstrated that under applied dc electric field, the electronic processes lead to such effects as coloration and degradation, which before were plausibly ascribed to migration of oxygen vacancies. Finally, it is concluded that the hypothesis of mobile oxygen vacancies is misleading.

  • 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

    P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Others

  • Publication year

    2021

  • Confidentiality

    S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Data specific for result type

  • Name of the periodical

    IEEE Transactions on Ultrasonics, Ferroelectrics and Frequency Control

  • ISSN

    0885-3010

  • e-ISSN

    1525-8955

  • Volume of the periodical

    68

  • Issue of the periodical within the volume

    2

  • Country of publishing house

    US - UNITED STATES

  • Number of pages

    7

  • Pages from-to

    296-302

  • UT code for WoS article

    000613348000010

  • EID of the result in the Scopus database

    2-s2.0-85100377489