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Superlattice-like structure and enhanced ferroelectric properties of intergrowth Aurivillius oxides

Aurivillius oxides with an intergrowth structures have been receiving increasing interest because of their special structures and potential outstanding ferroelectric properties. In this work, Bi(3)LaTiNbFeO(12)–Bi(5)Ti(3)FeO(15) and Bi(3)TiNbO(9)–Bi(3)LaTiNbFeO(12) compounds were successfully synthe...

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Detalles Bibliográficos
Autores principales: Yang, He, Chen, Zezhi, Peng, Ranran, Huang, Haoliang, Fu, Zhengping, Zhai, Xiaofang, Lu, Yalin
Formato: Online Artículo Texto
Lenguaje:English
Publicado: The Royal Society of Chemistry 2018
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9080407/
https://www.ncbi.nlm.nih.gov/pubmed/35540545
http://dx.doi.org/10.1039/c8ra02374c
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author Yang, He
Chen, Zezhi
Peng, Ranran
Huang, Haoliang
Fu, Zhengping
Zhai, Xiaofang
Lu, Yalin
author_facet Yang, He
Chen, Zezhi
Peng, Ranran
Huang, Haoliang
Fu, Zhengping
Zhai, Xiaofang
Lu, Yalin
author_sort Yang, He
collection PubMed
description Aurivillius oxides with an intergrowth structures have been receiving increasing interest because of their special structures and potential outstanding ferroelectric properties. In this work, Bi(3)LaTiNbFeO(12)–Bi(5)Ti(3)FeO(15) and Bi(3)TiNbO(9)–Bi(3)LaTiNbFeO(12) compounds were successfully synthetised using a simple solid-state reaction method. X-Ray diffraction patterns and scanning transmission electron microscopy high angle annular dark field (STEM-HAADF) images confirm the 2–3 and the 3–4 intergrowth structures in Bi(3)TiNbO(9)–Bi(3)LaTiNbFeO(12) and Bi(3)LaTiNbFeO(12)–Bi(5)Ti(3)FeO(15) compounds, respectively. A superlattice-like distortion in these oxides was proposed resulting from the combination of sub-lattices with different a and b parameters, which was validated by XRD refinements and Raman spectra. Polarization-electric field tests and pulsed polarization positive-up negative-down measurements demonstrate that such superlattice-like structures can effectively enhance the intrinsic ferroelectric polarization and coercive field of these oxides, especially when compared with their component oxides Bi(3)TiNbO(9), Bi(3)LaTiNbFeO(12) and Bi(5)Ti(3)FeO(15). Simultaneously, ferroelectric Curie temperatures of Bi(3)TiNbO(9)–Bi(3)LaTiNbFeO(12) and Bi(3)LaTiNbFeO(12)–Bi(5)Ti(3)FeO(15) oxides are lowered because of the internal stress in the superlattice-like structure. Nevertheless, the paramagnetism of the samples is hardly influenced by their structure, while mainly related to their iron content, in which iron has a similar effective magnetic moment around 3.4–3.9.
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spelling pubmed-90804072022-05-09 Superlattice-like structure and enhanced ferroelectric properties of intergrowth Aurivillius oxides Yang, He Chen, Zezhi Peng, Ranran Huang, Haoliang Fu, Zhengping Zhai, Xiaofang Lu, Yalin RSC Adv Chemistry Aurivillius oxides with an intergrowth structures have been receiving increasing interest because of their special structures and potential outstanding ferroelectric properties. In this work, Bi(3)LaTiNbFeO(12)–Bi(5)Ti(3)FeO(15) and Bi(3)TiNbO(9)–Bi(3)LaTiNbFeO(12) compounds were successfully synthetised using a simple solid-state reaction method. X-Ray diffraction patterns and scanning transmission electron microscopy high angle annular dark field (STEM-HAADF) images confirm the 2–3 and the 3–4 intergrowth structures in Bi(3)TiNbO(9)–Bi(3)LaTiNbFeO(12) and Bi(3)LaTiNbFeO(12)–Bi(5)Ti(3)FeO(15) compounds, respectively. A superlattice-like distortion in these oxides was proposed resulting from the combination of sub-lattices with different a and b parameters, which was validated by XRD refinements and Raman spectra. Polarization-electric field tests and pulsed polarization positive-up negative-down measurements demonstrate that such superlattice-like structures can effectively enhance the intrinsic ferroelectric polarization and coercive field of these oxides, especially when compared with their component oxides Bi(3)TiNbO(9), Bi(3)LaTiNbFeO(12) and Bi(5)Ti(3)FeO(15). Simultaneously, ferroelectric Curie temperatures of Bi(3)TiNbO(9)–Bi(3)LaTiNbFeO(12) and Bi(3)LaTiNbFeO(12)–Bi(5)Ti(3)FeO(15) oxides are lowered because of the internal stress in the superlattice-like structure. Nevertheless, the paramagnetism of the samples is hardly influenced by their structure, while mainly related to their iron content, in which iron has a similar effective magnetic moment around 3.4–3.9. The Royal Society of Chemistry 2018-05-08 /pmc/articles/PMC9080407/ /pubmed/35540545 http://dx.doi.org/10.1039/c8ra02374c Text en This journal is © The Royal Society of Chemistry https://creativecommons.org/licenses/by-nc/3.0/
spellingShingle Chemistry
Yang, He
Chen, Zezhi
Peng, Ranran
Huang, Haoliang
Fu, Zhengping
Zhai, Xiaofang
Lu, Yalin
Superlattice-like structure and enhanced ferroelectric properties of intergrowth Aurivillius oxides
title Superlattice-like structure and enhanced ferroelectric properties of intergrowth Aurivillius oxides
title_full Superlattice-like structure and enhanced ferroelectric properties of intergrowth Aurivillius oxides
title_fullStr Superlattice-like structure and enhanced ferroelectric properties of intergrowth Aurivillius oxides
title_full_unstemmed Superlattice-like structure and enhanced ferroelectric properties of intergrowth Aurivillius oxides
title_short Superlattice-like structure and enhanced ferroelectric properties of intergrowth Aurivillius oxides
title_sort superlattice-like structure and enhanced ferroelectric properties of intergrowth aurivillius oxides
topic Chemistry
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9080407/
https://www.ncbi.nlm.nih.gov/pubmed/35540545
http://dx.doi.org/10.1039/c8ra02374c
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