Monitoring the formation of infinite-layer transition metal oxides through in situ atomic-resolution electron microscopy.

IF 19.2 1区 化学 Q1 CHEMISTRY, MULTIDISCIPLINARY
Yaolong Xing, Inhwan Kim, Kyeong Tae Kang, Jinho Byun, Woo Seok Choi, Jaekwang Lee, Sang Ho Oh
{"title":"Monitoring the formation of infinite-layer transition metal oxides through in situ atomic-resolution electron microscopy.","authors":"Yaolong Xing, Inhwan Kim, Kyeong Tae Kang, Jinho Byun, Woo Seok Choi, Jaekwang Lee, Sang Ho Oh","doi":"10.1038/s41557-024-01617-7","DOIUrl":null,"url":null,"abstract":"<p><p>Infinite-layer transition metal oxides with two-dimensional oxygen coordination exhibit intriguing electronic and magnetic properties due to strong in-plane orbital hybridization. The synthesis of this distinctive structure has primarily relied on kinetically controlled reduction of oxygen-rich phases featuring three-dimensional polyhedral oxygen coordination. Here, using in situ atomic-resolution electron microscopy, we scrutinize the intricate atomic-scale mechanisms of oxygen conduction leading to the transformation of SrFeO<sub>2.5</sub> to infinite-layer SrFeO<sub>2</sub>. The oxygen release is highly anisotropic and governed by the lattice reorientation aligning the fast diffusion channels towards the outlet, which is facilitated by cooperative yet shuffle displacements of iron and oxygen ions. Accompanied with the oxygen release, the three-dimensional to two-dimensional reconfiguration of oxygen is facilitated by the lattice flexibility of FeO<sub>x</sub> polyhedral layers, adopting multiple discrete transient states following the sequence determined by the least energy-costing pathways. Similar transformation mechanism may operate in cuprate and nickelate superconductors, which are isostructural with SrFeO<sub>2</sub>.</p>","PeriodicalId":18909,"journal":{"name":"Nature chemistry","volume":null,"pages":null},"PeriodicalIF":19.2000,"publicationDate":"2024-08-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Nature chemistry","FirstCategoryId":"92","ListUrlMain":"https://doi.org/10.1038/s41557-024-01617-7","RegionNum":1,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"CHEMISTRY, MULTIDISCIPLINARY","Score":null,"Total":0}
引用次数: 0

Abstract

Infinite-layer transition metal oxides with two-dimensional oxygen coordination exhibit intriguing electronic and magnetic properties due to strong in-plane orbital hybridization. The synthesis of this distinctive structure has primarily relied on kinetically controlled reduction of oxygen-rich phases featuring three-dimensional polyhedral oxygen coordination. Here, using in situ atomic-resolution electron microscopy, we scrutinize the intricate atomic-scale mechanisms of oxygen conduction leading to the transformation of SrFeO2.5 to infinite-layer SrFeO2. The oxygen release is highly anisotropic and governed by the lattice reorientation aligning the fast diffusion channels towards the outlet, which is facilitated by cooperative yet shuffle displacements of iron and oxygen ions. Accompanied with the oxygen release, the three-dimensional to two-dimensional reconfiguration of oxygen is facilitated by the lattice flexibility of FeOx polyhedral layers, adopting multiple discrete transient states following the sequence determined by the least energy-costing pathways. Similar transformation mechanism may operate in cuprate and nickelate superconductors, which are isostructural with SrFeO2.

Abstract Image

通过原位原子分辨率电子显微镜监测无限层过渡金属氧化物的形成。
具有二维氧配位的无穷层过渡金属氧化物,由于具有很强的面内轨道杂化,因而表现出引人入胜的电子和磁性能。这种独特结构的合成主要依赖于以三维多面体氧配位为特征的富氧相的动力学控制还原。在这里,我们利用原位原子分辨率电子显微镜,仔细研究了导致 SrFeO2.5 转变为无限层 SrFeO2 的错综复杂的原子尺度氧传导机制。氧的释放是高度各向异性的,受制于晶格的重新定向,使快速扩散通道向出口对齐,而铁离子和氧离子的合作位移又促进了这种重新定向。伴随着氧气的释放,氧化铁多面体层的晶格柔性促进了氧气从三维到二维的重新配置,按照能量消耗最小的途径确定的顺序采用多种离散的瞬态。与 SrFeO2 结构相同的铜酸盐和镍酸盐超导体中也可能存在类似的转变机制。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
求助全文
约1分钟内获得全文 求助全文
来源期刊
Nature chemistry
Nature chemistry 化学-化学综合
CiteScore
29.60
自引率
1.40%
发文量
226
审稿时长
1.7 months
期刊介绍: Nature Chemistry is a monthly journal that publishes groundbreaking and significant research in all areas of chemistry. It covers traditional subjects such as analytical, inorganic, organic, and physical chemistry, as well as a wide range of other topics including catalysis, computational and theoretical chemistry, and environmental chemistry. The journal also features interdisciplinary research at the interface of chemistry with biology, materials science, nanotechnology, and physics. Manuscripts detailing such multidisciplinary work are encouraged, as long as the central theme pertains to chemistry. Aside from primary research, Nature Chemistry publishes review articles, news and views, research highlights from other journals, commentaries, book reviews, correspondence, and analysis of the broader chemical landscape. It also addresses crucial issues related to education, funding, policy, intellectual property, and the societal impact of chemistry. Nature Chemistry is dedicated to ensuring the highest standards of original research through a fair and rigorous review process. It offers authors maximum visibility for their papers, access to a broad readership, exceptional copy editing and production standards, rapid publication, and independence from academic societies and other vested interests. Overall, Nature Chemistry aims to be the authoritative voice of the global chemical community.
×
引用
GB/T 7714-2015
复制
MLA
复制
APA
复制
导出至
BibTeX EndNote RefMan NoteFirst NoteExpress
×
提示
您的信息不完整,为了账户安全,请先补充。
现在去补充
×
提示
您因"违规操作"
具体请查看互助需知
我知道了
×
提示
确定
请完成安全验证×
copy
已复制链接
快去分享给好友吧!
我知道了
右上角分享
点击右上角分享
0
联系我们:info@booksci.cn Book学术提供免费学术资源搜索服务,方便国内外学者检索中英文文献。致力于提供最便捷和优质的服务体验。 Copyright © 2023 布克学术 All rights reserved.
京ICP备2023020795号-1
ghs 京公网安备 11010802042870号
Book学术文献互助
Book学术文献互助群
群 号:481959085
Book学术官方微信