Unveiling structural disorders in honeycomb layered oxide: Na2Ni2TeO6
Unveiling structural disorders in honeycomb layered oxide: Na2Ni2TeO6
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DOI：
10.1016/j.mtla.2021.101003
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发表时间：
2021-01-15
期刊：
影响因子：
3.4
通讯作者：
Saito, Tomohiro
中科院分区：
文献类型：
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作者：
Masese, Titus;Miyazaki, Yoshinobu;Saito, Tomohiro
蜂窝状层状氧化物在许多学科中引起了巨大的研究兴趣，这不仅是因为它们表现出无数的物理化学性质，而且还因为它们丰富的晶体结构多功能性。在此，一个全面的晶体学研究的钠基Na 2Ni 2 TeO 6蜂窝层状氧化物已进行使用原子分辨率透射电子显微镜，阐明了过多的原子排列（堆叠）在原始材料的障碍。在蜂窝状金属板层的排列中的堆垛层错（堆垛层错）主要发生在垂直于具有长程相干长度的板的方向上，并且在某些域中存在边缘位错。此外，碱金属原子分布的周期性排列被堆垛层错的发生所改变。Na 2Ni 2 TeO 6中固有的多种疾病设想了相关蜂窝状层状氧化物材料的功能的广泛影响，并有望增强对其材料科学的新兴趣。(C)2021作者由Elsevier B. V.代表Acta Materialia Inc.出版。这是CC BY-NC-ND许可下的开放获取文章（http：//creativecommons.org/licenses/by-nc-nd/4.0/）
Honeycomb layered oxides have garnered tremendous research interest in a wide swath of disciplines owing not only to the myriad physicochemical properties they exhibit, but also their rich crystal structural versatility. Herein, a comprehensive crystallographic study of a sodium-based Na2Ni2TeO6 honeycomb layered oxide has been performed using atomic-resolution transmission electron microscopy, elucidating a plethora of atomic arrangement (stacking) disorders in the pristine material. Stacking disorders in the arrangement of honeycomb metal slab layers (stacking faults) occur predominantly perpendicular to the slabs with long-range coherence length and enlisting edge dislocations in some domains. Moreover, the periodic arrangement of the distribution of alkali atoms is altered by the occurrence of stacking faults. The multitude of disorders innate in Na2Ni2TeO6 envisage broad implications in the functionalities of related honeycomb layered oxide materials and hold promise in bolstering renewed interest in their material science. (C) 2021 The Authors. Published by Elsevier B.V. on behalf of Acta Materialia Inc. This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/)