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

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SYSNO ASEP	0470508
Document Type	J - Journal Article
R&D Document Type	Journal Article
Subsidiary J	Článek ve WOS
Title	Dynamic nonlinearity in epitaxial BaTiO₃ films
Author(s)	Tyunina, Marina (FZU-D)_ORCID Savinov, Maxim (FZU-D)_{RID, ORCID}
Article number	054109
Source Title	Physical Review B. - : American Physical Society - ISSN 2469-9950 Roč. 94, č. 5 (2016), 1-6
Number of pages	6 s.
Language	eng - English
Country	US - United States
Keywords	dynamic nonlinearity ; epitaxial ; BaTiO₃ films
Subject RIV	BM - Solid Matter Physics ; Magnetism
R&D Projects	GA15-15123S GA ČR - Czech Science Foundation (CSF)
Institutional support	FZU-D - RVO:68378271
UT WOS	000381304800004
EID SCOPUS	84985993753
DOI	10.1103/PhysRevB.94.054109
Annotation	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.
Workplace	Institute of Physics
Contact	Kristina Potocká, potocka@fzu.cz, Tel.: 220 318 579
Year of Publishing	2017

Number of the records: 1