Fig. 1: Atomic-resolution STEM images of Σ13(\(10\bar{1}4\))/[\(11\bar{2}0\)] GB in α-Al2O3 viewed along the [\(11\bar{2}0\)] axis.
From: Grain boundary structural transformation induced by co-segregation of aliovalent dopants
![Fig. 1: Atomic-resolution STEM images of Σ13(
$$10\bar{1}4$$
10
1
¯
4
)/[
$$11\bar{2}0$$
11
2
¯
0
] GB in α-Al2O3 viewed along the [
$$11\bar{2}0$$
11
2
¯
0
] axis.](http://media.springernature.com/full/springer-static/image/art%3A10.1038%2Fs41467-022-32935-4/MediaObjects/41467_2022_32935_Fig1_HTML.png?as=webp)
ADF- and ABF-STEM images of a, b pristine GB and c, d Ca/Si co-doped GB, respectively. e Atomic-resolution STEM-EDS elemental maps of Ca-K (green), Si-K (red), Al-K (cyan) edges, and their overlay, respectively. The green, red, and white arrowheads correspond to the positions of Ca, Si, and weakly observed Si, respectively. The scale bar in a is 5 Å, which applies to all the images.
