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Spontaneous phase segregation of Sr(2)NiO(3) and SrNi(2)O(3) during SrNiO(3) heteroepitaxy
Recent discovery of superconductivity in Nd(0.8)Sr(0.2)NiO(2) motivates the synthesis of other nickelates for providing insights into the origin of high-temperature superconductivity. However, the synthesis of stoichiometric R(1−x)Sr(x)NiO(3) thin films over a range of x has proven challenging. More...
Autores principales: | , , , , , , , , , , , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
American Association for the Advancement of Science
2021
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7935367/ https://www.ncbi.nlm.nih.gov/pubmed/33674310 http://dx.doi.org/10.1126/sciadv.abe2866 |
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author | Wang, Le Yang, Zhenzhong Yin, Xinmao Taylor, Sandra D. He, Xu Tang, Chi Sin Bowden, Mark E. Zhao, Jiali Wang, Jiaou Liu, Jishan Perea, Daniel E. Wangoh, Linda Wee, Andrew T. S. Zhou, Hua Chambers, Scott A. Du, Yingge |
author_facet | Wang, Le Yang, Zhenzhong Yin, Xinmao Taylor, Sandra D. He, Xu Tang, Chi Sin Bowden, Mark E. Zhao, Jiali Wang, Jiaou Liu, Jishan Perea, Daniel E. Wangoh, Linda Wee, Andrew T. S. Zhou, Hua Chambers, Scott A. Du, Yingge |
author_sort | Wang, Le |
collection | PubMed |
description | Recent discovery of superconductivity in Nd(0.8)Sr(0.2)NiO(2) motivates the synthesis of other nickelates for providing insights into the origin of high-temperature superconductivity. However, the synthesis of stoichiometric R(1−x)Sr(x)NiO(3) thin films over a range of x has proven challenging. Moreover, little is known about the structures and properties of the end member SrNiO(3). Here, we show that spontaneous phase segregation occurs while depositing SrNiO(3) thin films on perovskite oxide substrates by molecular beam epitaxy. Two coexisting oxygen-deficient Ruddlesden-Popper phases, Sr(2)NiO(3) and SrNi(2)O(3), are formed to balance the stoichiometry and stabilize the energetically preferred Ni(2+) cation. Our study sheds light on an unusual oxide thin-film nucleation process driven by the instability in perovskite structured SrNiO(3) and the tendency of transition metal cations to form their most stable valence (i.e., Ni(2+) in this case). The resulting metastable reduced Ruddlesden-Popper structures offer a testbed for further studying emerging phenomena in nickel-based oxides. |
format | Online Article Text |
id | pubmed-7935367 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2021 |
publisher | American Association for the Advancement of Science |
record_format | MEDLINE/PubMed |
spelling | pubmed-79353672021-03-17 Spontaneous phase segregation of Sr(2)NiO(3) and SrNi(2)O(3) during SrNiO(3) heteroepitaxy Wang, Le Yang, Zhenzhong Yin, Xinmao Taylor, Sandra D. He, Xu Tang, Chi Sin Bowden, Mark E. Zhao, Jiali Wang, Jiaou Liu, Jishan Perea, Daniel E. Wangoh, Linda Wee, Andrew T. S. Zhou, Hua Chambers, Scott A. Du, Yingge Sci Adv Research Articles Recent discovery of superconductivity in Nd(0.8)Sr(0.2)NiO(2) motivates the synthesis of other nickelates for providing insights into the origin of high-temperature superconductivity. However, the synthesis of stoichiometric R(1−x)Sr(x)NiO(3) thin films over a range of x has proven challenging. Moreover, little is known about the structures and properties of the end member SrNiO(3). Here, we show that spontaneous phase segregation occurs while depositing SrNiO(3) thin films on perovskite oxide substrates by molecular beam epitaxy. Two coexisting oxygen-deficient Ruddlesden-Popper phases, Sr(2)NiO(3) and SrNi(2)O(3), are formed to balance the stoichiometry and stabilize the energetically preferred Ni(2+) cation. Our study sheds light on an unusual oxide thin-film nucleation process driven by the instability in perovskite structured SrNiO(3) and the tendency of transition metal cations to form their most stable valence (i.e., Ni(2+) in this case). The resulting metastable reduced Ruddlesden-Popper structures offer a testbed for further studying emerging phenomena in nickel-based oxides. American Association for the Advancement of Science 2021-03-05 /pmc/articles/PMC7935367/ /pubmed/33674310 http://dx.doi.org/10.1126/sciadv.abe2866 Text en Copyright © 2021 The Authors, some rights reserved; exclusive licensee American Association for the Advancement of Science. No claim to original U.S. Government Works. Distributed under a Creative Commons Attribution NonCommercial License 4.0 (CC BY-NC). https://creativecommons.org/licenses/by-nc/4.0/ https://creativecommons.org/licenses/by-nc/4.0/This is an open-access article distributed under the terms of the Creative Commons Attribution-NonCommercial license (https://creativecommons.org/licenses/by-nc/4.0/) , which permits use, distribution, and reproduction in any medium, so long as the resultant use is not for commercial advantage and provided the original work is properly cited. |
spellingShingle | Research Articles Wang, Le Yang, Zhenzhong Yin, Xinmao Taylor, Sandra D. He, Xu Tang, Chi Sin Bowden, Mark E. Zhao, Jiali Wang, Jiaou Liu, Jishan Perea, Daniel E. Wangoh, Linda Wee, Andrew T. S. Zhou, Hua Chambers, Scott A. Du, Yingge Spontaneous phase segregation of Sr(2)NiO(3) and SrNi(2)O(3) during SrNiO(3) heteroepitaxy |
title | Spontaneous phase segregation of Sr(2)NiO(3) and SrNi(2)O(3) during SrNiO(3) heteroepitaxy |
title_full | Spontaneous phase segregation of Sr(2)NiO(3) and SrNi(2)O(3) during SrNiO(3) heteroepitaxy |
title_fullStr | Spontaneous phase segregation of Sr(2)NiO(3) and SrNi(2)O(3) during SrNiO(3) heteroepitaxy |
title_full_unstemmed | Spontaneous phase segregation of Sr(2)NiO(3) and SrNi(2)O(3) during SrNiO(3) heteroepitaxy |
title_short | Spontaneous phase segregation of Sr(2)NiO(3) and SrNi(2)O(3) during SrNiO(3) heteroepitaxy |
title_sort | spontaneous phase segregation of sr(2)nio(3) and srni(2)o(3) during srnio(3) heteroepitaxy |
topic | Research Articles |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7935367/ https://www.ncbi.nlm.nih.gov/pubmed/33674310 http://dx.doi.org/10.1126/sciadv.abe2866 |
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