Optical Properties of Ferroelectric Epitaxial K(0.5)Na(0.5)NbO(3) Films in Visible to Ultraviolet Range

The complex index of refraction in the spectral range of 0.74 to 4.5 eV is studied by variable-angle spectroscopic ellipsometry in ferroelectric K(0.5)Na(0.5)NbO(3) films. The 20-nm-thick cube-on-cube-type epitaxial films are grown on SrTiO(3)(001) and DyScO(3)(011) single-crystal substrates. The fi...

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Detalles Bibliográficos
Autores principales: Chernova, E., Pacherova, O., Kocourek, T., Jelinek, M., Dejneka, A., Tyunina, M.
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Public Library of Science 2016
Materias:
Research Article
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4830626/
https://www.ncbi.nlm.nih.gov/pubmed/27074042
http://dx.doi.org/10.1371/journal.pone.0153261
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author Chernova, E.
Pacherova, O.
Kocourek, T.
Jelinek, M.
Dejneka, A.
Tyunina, M.
author_facet Chernova, E.
Pacherova, O.
Kocourek, T.
Jelinek, M.
Dejneka, A.
Tyunina, M.
author_sort Chernova, E.
collection PubMed
description The complex index of refraction in the spectral range of 0.74 to 4.5 eV is studied by variable-angle spectroscopic ellipsometry in ferroelectric K(0.5)Na(0.5)NbO(3) films. The 20-nm-thick cube-on-cube-type epitaxial films are grown on SrTiO(3)(001) and DyScO(3)(011) single-crystal substrates. The films are transparent and exhibit a significant difference between refractive indices Δn = 0.5 at photon energies below 3 eV. The energies of optical transitions are in the range of 3.15–4.30 eV and differ by 0.2–0.3 eV in these films. The observed behavior is discussed in terms of lattice strain and strain-induced ferroelectric polarization in epitaxial perovskite oxide films.
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spelling pubmed-48306262016-04-22 Optical Properties of Ferroelectric Epitaxial K(0.5)Na(0.5)NbO(3) Films in Visible to Ultraviolet Range Chernova, E. Pacherova, O. Kocourek, T. Jelinek, M. Dejneka, A. Tyunina, M. PLoS One Research Article The complex index of refraction in the spectral range of 0.74 to 4.5 eV is studied by variable-angle spectroscopic ellipsometry in ferroelectric K(0.5)Na(0.5)NbO(3) films. The 20-nm-thick cube-on-cube-type epitaxial films are grown on SrTiO(3)(001) and DyScO(3)(011) single-crystal substrates. The films are transparent and exhibit a significant difference between refractive indices Δn = 0.5 at photon energies below 3 eV. The energies of optical transitions are in the range of 3.15–4.30 eV and differ by 0.2–0.3 eV in these films. The observed behavior is discussed in terms of lattice strain and strain-induced ferroelectric polarization in epitaxial perovskite oxide films. Public Library of Science 2016-04-13 /pmc/articles/PMC4830626/ /pubmed/27074042 http://dx.doi.org/10.1371/journal.pone.0153261 Text en © 2016 Chernova et al http://creativecommons.org/licenses/by/4.0/ This is an open access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0/) , which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.
spellingShingle Research Article
Chernova, E.
Pacherova, O.
Kocourek, T.
Jelinek, M.
Dejneka, A.
Tyunina, M.
Optical Properties of Ferroelectric Epitaxial K(0.5)Na(0.5)NbO(3) Films in Visible to Ultraviolet Range
title Optical Properties of Ferroelectric Epitaxial K(0.5)Na(0.5)NbO(3) Films in Visible to Ultraviolet Range
title_full Optical Properties of Ferroelectric Epitaxial K(0.5)Na(0.5)NbO(3) Films in Visible to Ultraviolet Range
title_fullStr Optical Properties of Ferroelectric Epitaxial K(0.5)Na(0.5)NbO(3) Films in Visible to Ultraviolet Range
title_full_unstemmed Optical Properties of Ferroelectric Epitaxial K(0.5)Na(0.5)NbO(3) Films in Visible to Ultraviolet Range
title_short Optical Properties of Ferroelectric Epitaxial K(0.5)Na(0.5)NbO(3) Films in Visible to Ultraviolet Range
title_sort optical properties of ferroelectric epitaxial k(0.5)na(0.5)nbo(3) films in visible to ultraviolet range
topic Research Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4830626/
https://www.ncbi.nlm.nih.gov/pubmed/27074042
http://dx.doi.org/10.1371/journal.pone.0153261
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