| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 8037878 | Ultramicroscopy | 2016 | 24 Pages |
Abstract
In perovskite oxide based materials and hetero-structures there are often strong correlations between oxygen octahedral distortions and functionality. Thus, atomistic understanding of the octahedral distortion, which requires accurate measurements of atomic column positions, will greatly help to engineer their properties. Here, we report the development of a software tool to extract quantitative information of the lattice and of BO6 octahedral distortions from STEM images. Center-of-mass and 2D Gaussian fitting methods are implemented to locate positions of individual atom columns. The precision of atomic column distance measurements is evaluated on both simulated and experimental images. The application of the software tool is demonstrated using practical examples.
Related Topics
Physical Sciences and Engineering
Materials Science
Nanotechnology
Authors
Yi Wang, Ute Salzberger, Wilfried Sigle, Y. Eren Suyolcu, Peter A. van Aken,