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Overlayer deposition-induced control of oxide ion concentration in SrFe(0.5)Co(0.5)O(2.5) oxygen sponges
Controlling the oxide ion (O(2−)) concentration in oxides is essential to develop advanced ionic devices, i.e. solid oxide fuel cells, smart windows, memory devices, energy storage devices, and so on. Among many oxides several transition metal (TM)-based perovskite oxides show high oxide ion conduct...
Autores principales: | , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
The Royal Society of Chemistry
2021
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9041705/ https://www.ncbi.nlm.nih.gov/pubmed/35495523 http://dx.doi.org/10.1039/d1ra06378b |
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author | Lee, Joonhyuk Kim, Younghak Cho, Jinhyung Ohta, Hiromichi Jeen, Hyoungjeen |
author_facet | Lee, Joonhyuk Kim, Younghak Cho, Jinhyung Ohta, Hiromichi Jeen, Hyoungjeen |
author_sort | Lee, Joonhyuk |
collection | PubMed |
description | Controlling the oxide ion (O(2−)) concentration in oxides is essential to develop advanced ionic devices, i.e. solid oxide fuel cells, smart windows, memory devices, energy storage devices, and so on. Among many oxides several transition metal (TM)-based perovskite oxides show high oxide ion conductivity, and their physical properties show high sensitivity to the change of the oxide ion concentration. Here, the change in the oxide ion concentration is shown through the overlayer deposition on the SrFe(0.5)Co(0.5)O(2.5) (SFCO) oxygen sponge film. We grew SFCO films followed by the deposition of two kinds of complex oxide films under exactly the same growth conditions, and observed the changes in the crystal structure, valence states, and magnetic ground states. As the NSMO overlayer grows, strong evidence of oxidation at the O K edge is shown. In addition, the Fe(4+) feature is revealed, and the electron valence state of Co increased from 3 to 3.25. The oxide ion concentration of SFCO changes during layer growth due to oxidation or reduction due to differences in chemical potential. The present results might be useful to develop advanced ionic devices using TM-based perovskite oxides. |
format | Online Article Text |
id | pubmed-9041705 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2021 |
publisher | The Royal Society of Chemistry |
record_format | MEDLINE/PubMed |
spelling | pubmed-90417052022-04-28 Overlayer deposition-induced control of oxide ion concentration in SrFe(0.5)Co(0.5)O(2.5) oxygen sponges Lee, Joonhyuk Kim, Younghak Cho, Jinhyung Ohta, Hiromichi Jeen, Hyoungjeen RSC Adv Chemistry Controlling the oxide ion (O(2−)) concentration in oxides is essential to develop advanced ionic devices, i.e. solid oxide fuel cells, smart windows, memory devices, energy storage devices, and so on. Among many oxides several transition metal (TM)-based perovskite oxides show high oxide ion conductivity, and their physical properties show high sensitivity to the change of the oxide ion concentration. Here, the change in the oxide ion concentration is shown through the overlayer deposition on the SrFe(0.5)Co(0.5)O(2.5) (SFCO) oxygen sponge film. We grew SFCO films followed by the deposition of two kinds of complex oxide films under exactly the same growth conditions, and observed the changes in the crystal structure, valence states, and magnetic ground states. As the NSMO overlayer grows, strong evidence of oxidation at the O K edge is shown. In addition, the Fe(4+) feature is revealed, and the electron valence state of Co increased from 3 to 3.25. The oxide ion concentration of SFCO changes during layer growth due to oxidation or reduction due to differences in chemical potential. The present results might be useful to develop advanced ionic devices using TM-based perovskite oxides. The Royal Society of Chemistry 2021-09-29 /pmc/articles/PMC9041705/ /pubmed/35495523 http://dx.doi.org/10.1039/d1ra06378b Text en This journal is © The Royal Society of Chemistry https://creativecommons.org/licenses/by-nc/3.0/ |
spellingShingle | Chemistry Lee, Joonhyuk Kim, Younghak Cho, Jinhyung Ohta, Hiromichi Jeen, Hyoungjeen Overlayer deposition-induced control of oxide ion concentration in SrFe(0.5)Co(0.5)O(2.5) oxygen sponges |
title | Overlayer deposition-induced control of oxide ion concentration in SrFe(0.5)Co(0.5)O(2.5) oxygen sponges |
title_full | Overlayer deposition-induced control of oxide ion concentration in SrFe(0.5)Co(0.5)O(2.5) oxygen sponges |
title_fullStr | Overlayer deposition-induced control of oxide ion concentration in SrFe(0.5)Co(0.5)O(2.5) oxygen sponges |
title_full_unstemmed | Overlayer deposition-induced control of oxide ion concentration in SrFe(0.5)Co(0.5)O(2.5) oxygen sponges |
title_short | Overlayer deposition-induced control of oxide ion concentration in SrFe(0.5)Co(0.5)O(2.5) oxygen sponges |
title_sort | overlayer deposition-induced control of oxide ion concentration in srfe(0.5)co(0.5)o(2.5) oxygen sponges |
topic | Chemistry |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9041705/ https://www.ncbi.nlm.nih.gov/pubmed/35495523 http://dx.doi.org/10.1039/d1ra06378b |
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