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Origin of anomalous giant dielectric performance in novel perovskite: Bi(0.5−x)La(x)Na(0.5−x)Li(x)Ti(1−y)M(y)O(3) (M = Mg(2+), Ga(3+))

Dielectric properties and dielectric relaxation behaviors of A/B sites co-substituted Bi(0.5)Na(0.5)TiO(3) perovskite-type ferroelectrics are reported. The Bi(0.5−x)La(x)Na(0.5−x)Li(x)Ti(1−y)M(y)O(3) (M = Mg(2+), Ga(3+)) exhibits anomalous giant dielectric permittivity (ε’) of ~10(5) under a heterog...

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Detalles Bibliográficos
Autores principales: Liu, Xiao, Fan, Huiqing, Shi, Jing, Li, Qiang
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Nature Publishing Group 2015
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4523863/
https://www.ncbi.nlm.nih.gov/pubmed/26239525
http://dx.doi.org/10.1038/srep12699
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author Liu, Xiao
Fan, Huiqing
Shi, Jing
Li, Qiang
author_facet Liu, Xiao
Fan, Huiqing
Shi, Jing
Li, Qiang
author_sort Liu, Xiao
collection PubMed
description Dielectric properties and dielectric relaxation behaviors of A/B sites co-substituted Bi(0.5)Na(0.5)TiO(3) perovskite-type ferroelectrics are reported. The Bi(0.5−x)La(x)Na(0.5−x)Li(x)Ti(1−y)M(y)O(3) (M = Mg(2+), Ga(3+)) exhibits anomalous giant dielectric permittivity (ε’) of ~10(5) under a heterogeneous constitution with easily discernible grain and grain boundary conductivity. The lone pairs substitution theory as well as extrinsic disorders are used to clarify the significant structural evolution and the origin of the dielectric performance. A bigger free volume promotes the anomalous relaxation between oxygen sites, and the polarization direction on the nanoscale deviates from the average polarization direction at its ferroelectric state. Furthermore, no obvious phase transition indicates the considerable static substitutional disorder at the Bi/Na sites, which facilitates delocalized conduction of oxygen ions in the intermediate temperature range.
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spelling pubmed-45238632015-08-05 Origin of anomalous giant dielectric performance in novel perovskite: Bi(0.5−x)La(x)Na(0.5−x)Li(x)Ti(1−y)M(y)O(3) (M = Mg(2+), Ga(3+)) Liu, Xiao Fan, Huiqing Shi, Jing Li, Qiang Sci Rep Article Dielectric properties and dielectric relaxation behaviors of A/B sites co-substituted Bi(0.5)Na(0.5)TiO(3) perovskite-type ferroelectrics are reported. The Bi(0.5−x)La(x)Na(0.5−x)Li(x)Ti(1−y)M(y)O(3) (M = Mg(2+), Ga(3+)) exhibits anomalous giant dielectric permittivity (ε’) of ~10(5) under a heterogeneous constitution with easily discernible grain and grain boundary conductivity. The lone pairs substitution theory as well as extrinsic disorders are used to clarify the significant structural evolution and the origin of the dielectric performance. A bigger free volume promotes the anomalous relaxation between oxygen sites, and the polarization direction on the nanoscale deviates from the average polarization direction at its ferroelectric state. Furthermore, no obvious phase transition indicates the considerable static substitutional disorder at the Bi/Na sites, which facilitates delocalized conduction of oxygen ions in the intermediate temperature range. Nature Publishing Group 2015-08-04 /pmc/articles/PMC4523863/ /pubmed/26239525 http://dx.doi.org/10.1038/srep12699 Text en Copyright © 2015, Macmillan Publishers Limited http://creativecommons.org/licenses/by/4.0/ This work is licensed under a Creative Commons Attribution 4.0 International License. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in the credit line; if the material is not included under the Creative Commons license, users will need to obtain permission from the license holder to reproduce the material. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/
spellingShingle Article
Liu, Xiao
Fan, Huiqing
Shi, Jing
Li, Qiang
Origin of anomalous giant dielectric performance in novel perovskite: Bi(0.5−x)La(x)Na(0.5−x)Li(x)Ti(1−y)M(y)O(3) (M = Mg(2+), Ga(3+))
title Origin of anomalous giant dielectric performance in novel perovskite: Bi(0.5−x)La(x)Na(0.5−x)Li(x)Ti(1−y)M(y)O(3) (M = Mg(2+), Ga(3+))
title_full Origin of anomalous giant dielectric performance in novel perovskite: Bi(0.5−x)La(x)Na(0.5−x)Li(x)Ti(1−y)M(y)O(3) (M = Mg(2+), Ga(3+))
title_fullStr Origin of anomalous giant dielectric performance in novel perovskite: Bi(0.5−x)La(x)Na(0.5−x)Li(x)Ti(1−y)M(y)O(3) (M = Mg(2+), Ga(3+))
title_full_unstemmed Origin of anomalous giant dielectric performance in novel perovskite: Bi(0.5−x)La(x)Na(0.5−x)Li(x)Ti(1−y)M(y)O(3) (M = Mg(2+), Ga(3+))
title_short Origin of anomalous giant dielectric performance in novel perovskite: Bi(0.5−x)La(x)Na(0.5−x)Li(x)Ti(1−y)M(y)O(3) (M = Mg(2+), Ga(3+))
title_sort origin of anomalous giant dielectric performance in novel perovskite: bi(0.5−x)la(x)na(0.5−x)li(x)ti(1−y)m(y)o(3) (m = mg(2+), ga(3+))
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4523863/
https://www.ncbi.nlm.nih.gov/pubmed/26239525
http://dx.doi.org/10.1038/srep12699
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