Unveiling Structural Disorders in Honeycomb Layered Oxide: Na2Ni2TeO6

16 November 2020, Version 1
This content is a preprint and has not undergone peer review at the time of posting.


Honeycomb layered oxides have garnered tremendous research interest in a wide swath of disciplines owing to not only the myriad physicochemical properties they exhibit, but also due to 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 honeycomb metal slab layers (stacking faults) occur predominantly perpendicular to the slabs with long-range coherence length and enlisting 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 material functionalities of related honeycomb layered oxide materials and will bolster renewed interest in their material science.


Honeycomb Layered Oxides
transmission electron microscopy image
Atomic resolution imaging
Stacking defects
electron diffraction images
Energy Materials
Energy Materials Metal oxides
Stacking faults
dislocation defects


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