TY  - JOUR
AU  - Ivarsson, Dennis C. A.
AU  - Burkhardt, Ulrich
AU  - Heggen, Marc
AU  - Ormeci, Alim
AU  - Armbrüster, Marc
TI  - On the twinning in ZnPd
JO  - Physical chemistry, chemical physics
VL  - 19
IS  - 8
SN  - 1463-9084
CY  - Cambridge
PB  - RSC Publ.
M1  - FZJ-2017-06684
SP  - 5778 - 5785
PY  - 2017
AB  - The intermetallic compound ZnPd has demonstrated excellent catalytic properties in methanol steam reforming. While it is known that defects and microstructures influence the catalytic properties, little is known about the defects occurring in ZnPd. Due to recent advances in synthetic methods, coarse-grained ZnPd samples are accessible. This enables the detection and investigation of twinning in ZnPd by studying the twinned regions from the macroscopic scale by polarised light and electron backscattering diffraction (EBSD) down to the atomic scale by high-resolution transmission electron microscopy (HR-TEM). Twinning occurs in {101} and is coupled with a change in the c/a ratio in the vicinity of the twin boundary. Quantum chemical calculations result in only very small energy differences between the ideal and the twinned structure, explaining the experimentally observed thermal stability of the latter. The chemical bonding was investigated by the electron localizability indicator (ELI) and compared to the one in the ideal structure. The results confirm twinning along the {101} plane and demonstrate the high stability of the twin boundaries after formation.
LB  - PUB:(DE-HGF)16
UR  - <Go to ISI:>//WOS:000395869500011
DO  - DOI:10.1039/C6CP08117G
UR  - https://juser.fz-juelich.de/record/837914
ER  -