TY  - JOUR
AU  - Jin, Lei
AU  - Barthel, Juri
AU  - Jia, Chun-Lin
AU  - Urban, Knut
TI  - Atomic resolution imaging of YAlO$_{3}$ : Ce in the chromatic and spherical aberration corrected PICO electron microscope
JO  - Ultramicroscopy
VL  - 176
SN  - 0304-3991
CY  - Amsterdam
PB  - Elsevier Science
M1  - FZJ-2017-100016
SP  - 99 - 104
PY  - 2017
AB  - The application of combined chromatic and spherical aberration correction in high-resolution transmission electron microscopy enables a significant improvement of the spatial resolution down to 50 pm. We demonstrate that such a resolution can be achieved in practice at 200 kV. Diffractograms of images of gold nanoparticles on amorphous carbon demonstrate corresponding information transfer. The Y atom pairs in [010] oriented yttrium orthoaluminate are successfully imaged together with the Al and the O atoms. Although the 57 pm pair separation is well demonstrated separations between 55 pm and 80 pm are measured. This observation is tentatively attributed to structural relaxations and surface reconstruction in the very thin samples used. Quantification of the resolution limiting effective image spread is achieved based on an absolute match between experimental and simulated image intensity distributions.
LB  - PUB:(DE-HGF)16
UR  - <Go to ISI:>//WOS:000403992200015
DO  - DOI:10.1016/j.ultramic.2016.12.026
UR  - https://juser.fz-juelich.de/record/838093
ER  -