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Charge transport in epitaxial barium titanate films

The result's identifiers

  • Result code in IS VaVaI

    <a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68378271%3A_____%2F20%3A00539019" target="_blank" >RIV/68378271:_____/20:00539019 - isvavai.cz</a>

  • Result on the web

    <a href="https://doi.org/10.1103/PhysRevB.101.094106" target="_blank" >https://doi.org/10.1103/PhysRevB.101.094106</a>

  • DOI - Digital Object Identifier

    <a href="http://dx.doi.org/10.1103/PhysRevB.101.094106" target="_blank" >10.1103/PhysRevB.101.094106</a>

Alternative languages

  • Result language

    angličtina

  • Original language name

    Charge transport in epitaxial barium titanate films

  • Original language description

    The electrical conductivity of epitaxial BaTiO3 films was studied by small-signal impedance spectroscopy at temperatures of 10–720 K using Pt-BaTiO3-SrRuO3 capacitors. The ∼150-nm-thick BaTiO3 films possessed different lattice strains and degrees of oxygen deficiency. A crossover between the low-temperature hopping of small polarons and the high-temperature semiconductor- to metal-type behavior was demonstrated in all films. It was suggested that the small electron polarons originate from self-trapping at Ti in the stoichiometric tensilestrained film and from trapping at Ti next to the oxygen vacancy in the oxygen-deficient films. The conductionband transport was ascribed to the thermally activated release of the trapped electrons. It was pointed out that the electronic release can mimic the motion of oxygen vacancies, which are actually immobile.

  • 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

    2020

  • Confidentiality

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

Data specific for result type

  • Name of the periodical

    Physical Review B

  • ISSN

    2469-9950

  • e-ISSN

  • Volume of the periodical

    101

  • Issue of the periodical within the volume

    9

  • Country of publishing house

    US - UNITED STATES

  • Number of pages

    8

  • Pages from-to

    1-8

  • UT code for WoS article

    000521073100001

  • EID of the result in the Scopus database

    2-s2.0-85083241141