Počet záznamů: 1  

Dynamic nonlinearity in epitaxial BaTiO.sub.3./sub. films

  1. 1.
    0470508 - FZU-D 2017 RIV US eng J - Článek v odborném periodiku
    Tyunina, Marina - Savinov, Maxim
    Dynamic nonlinearity in epitaxial BaTiO3 films.
    Physical Review B. Roč. 94, č. 5 (2016), 1-6, č. článku 054109. ISSN 2469-9950
    Grant CEP: GA ČR GA15-15123S
    Institucionální podpora: RVO:68378271
    Klíčová slova: dynamic nonlinearity * epitaxial * BaTiO3 films
    Kód oboru RIV: BM - Fyzika pevných látek a magnetismus
    Impakt faktor: 3.836, rok: 2016

    Dynamic dielectric and piezoelectric constants of ferroelectrics increase proportionally to the amplitude of alternating electric field as a result of hysteretic Rayleigh-type motion of domain walls. Here a hysteresis-free quadratic field dependence of the dynamic dielectric response is experimentally demonstrated in the absence of domain walls in epitaxial BaTiO3 films. This extraordinary behavior is related to polar entities, whose presence is confirmed by the Vogel-Fulcher relaxation. The polar entities are ascribed to polarization fluctuations associated with lattice inhomogeneity.
    Trvalý link: http://hdl.handle.net/11104/0268130