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Enhancement of tetragonal anisotropy and stabilisation of the tetragonal phase by Bi/Mn-double-doping in BaTiO(3) ferroelectric ceramics

To stabilise ferroelectric-tetragonal phase of BaTiO(3), the double-doping of Bi and Mn up to 0.5 mol% was studied. Upon increasing the Bi content in BaTiO(3):Mn:Bi, the tetragonal crystal-lattice-constants a and c shrank and elongated, respectively, resulting in an enhancement of tetragonal anisotr...

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Autores principales: Yabuta, Hisato, Tanaka, Hidenori, Furuta, Tatsuo, Watanabe, Takayuki, Kubota, Makoto, Matsuda, Takanori, Ifuku, Toshihiro, Yoneda, Yasuhiro
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Nature Publishing Group 2017
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5377453/
https://www.ncbi.nlm.nih.gov/pubmed/28367973
http://dx.doi.org/10.1038/srep45842
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author Yabuta, Hisato
Tanaka, Hidenori
Furuta, Tatsuo
Watanabe, Takayuki
Kubota, Makoto
Matsuda, Takanori
Ifuku, Toshihiro
Yoneda, Yasuhiro
author_facet Yabuta, Hisato
Tanaka, Hidenori
Furuta, Tatsuo
Watanabe, Takayuki
Kubota, Makoto
Matsuda, Takanori
Ifuku, Toshihiro
Yoneda, Yasuhiro
author_sort Yabuta, Hisato
collection PubMed
description To stabilise ferroelectric-tetragonal phase of BaTiO(3), the double-doping of Bi and Mn up to 0.5 mol% was studied. Upon increasing the Bi content in BaTiO(3):Mn:Bi, the tetragonal crystal-lattice-constants a and c shrank and elongated, respectively, resulting in an enhancement of tetragonal anisotropy, and the temperature-range of the ferroelectric tetragonal phase expanded. X-ray absorption fine structure measurements confirmed that Bi and Mn were located at the A(Ba)-site and B(Ti)-site, respectively, and Bi was markedly displaced from the centrosymmetric position in the BiO(12) cluster. This A-site substitution of Bi also caused fluctuations of B-site atoms. Magnetic susceptibility measurements revealed a change in the Mn valence from +4 to +3 upon addition of the same molar amount of Bi as Mn, probably resulting from a compensating behaviour of the Mn at Ti(4+) sites for donor doping of Bi(3+) into the Ba(2+) site. Because addition of La(3+) instead of Bi(3+) showed neither the enhancement of the tetragonal anisotropy nor the stabilisation of the tetragonal phase, these phenomena in BaTiO(3):Mn:Bi were not caused by the Jahn-Teller effect of Mn(3+) in the MnO(6) octahedron, but caused by the Bi-displacement, probably resulting from the effect of the 6 s lone-pair electrons in Bi(3+).
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spelling pubmed-53774532017-04-10 Enhancement of tetragonal anisotropy and stabilisation of the tetragonal phase by Bi/Mn-double-doping in BaTiO(3) ferroelectric ceramics Yabuta, Hisato Tanaka, Hidenori Furuta, Tatsuo Watanabe, Takayuki Kubota, Makoto Matsuda, Takanori Ifuku, Toshihiro Yoneda, Yasuhiro Sci Rep Article To stabilise ferroelectric-tetragonal phase of BaTiO(3), the double-doping of Bi and Mn up to 0.5 mol% was studied. Upon increasing the Bi content in BaTiO(3):Mn:Bi, the tetragonal crystal-lattice-constants a and c shrank and elongated, respectively, resulting in an enhancement of tetragonal anisotropy, and the temperature-range of the ferroelectric tetragonal phase expanded. X-ray absorption fine structure measurements confirmed that Bi and Mn were located at the A(Ba)-site and B(Ti)-site, respectively, and Bi was markedly displaced from the centrosymmetric position in the BiO(12) cluster. This A-site substitution of Bi also caused fluctuations of B-site atoms. Magnetic susceptibility measurements revealed a change in the Mn valence from +4 to +3 upon addition of the same molar amount of Bi as Mn, probably resulting from a compensating behaviour of the Mn at Ti(4+) sites for donor doping of Bi(3+) into the Ba(2+) site. Because addition of La(3+) instead of Bi(3+) showed neither the enhancement of the tetragonal anisotropy nor the stabilisation of the tetragonal phase, these phenomena in BaTiO(3):Mn:Bi were not caused by the Jahn-Teller effect of Mn(3+) in the MnO(6) octahedron, but caused by the Bi-displacement, probably resulting from the effect of the 6 s lone-pair electrons in Bi(3+). Nature Publishing Group 2017-04-03 /pmc/articles/PMC5377453/ /pubmed/28367973 http://dx.doi.org/10.1038/srep45842 Text en Copyright © 2017, The Author(s) 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
Yabuta, Hisato
Tanaka, Hidenori
Furuta, Tatsuo
Watanabe, Takayuki
Kubota, Makoto
Matsuda, Takanori
Ifuku, Toshihiro
Yoneda, Yasuhiro
Enhancement of tetragonal anisotropy and stabilisation of the tetragonal phase by Bi/Mn-double-doping in BaTiO(3) ferroelectric ceramics
title Enhancement of tetragonal anisotropy and stabilisation of the tetragonal phase by Bi/Mn-double-doping in BaTiO(3) ferroelectric ceramics
title_full Enhancement of tetragonal anisotropy and stabilisation of the tetragonal phase by Bi/Mn-double-doping in BaTiO(3) ferroelectric ceramics
title_fullStr Enhancement of tetragonal anisotropy and stabilisation of the tetragonal phase by Bi/Mn-double-doping in BaTiO(3) ferroelectric ceramics
title_full_unstemmed Enhancement of tetragonal anisotropy and stabilisation of the tetragonal phase by Bi/Mn-double-doping in BaTiO(3) ferroelectric ceramics
title_short Enhancement of tetragonal anisotropy and stabilisation of the tetragonal phase by Bi/Mn-double-doping in BaTiO(3) ferroelectric ceramics
title_sort enhancement of tetragonal anisotropy and stabilisation of the tetragonal phase by bi/mn-double-doping in batio(3) ferroelectric ceramics
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5377453/
https://www.ncbi.nlm.nih.gov/pubmed/28367973
http://dx.doi.org/10.1038/srep45842
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