TY  - JOUR
AU  - Simon, Paul
AU  - Zelenina, Iryna
AU  - Ramlau, Reiner
AU  - Carrillo-Cabrera, Wilder
AU  - Burkhardt, Ulrich
AU  - Borrmann, Horst
AU  - Gil, Raul Cardoso
AU  - Feuerbacher, Michael
AU  - Gille, Peter
AU  - Grin, Yuri
TI  - Structural complexity of the intermetallic compound o-Al13Co4
JO  - Journal of alloys and compounds
VL  - 820
SN  - 0925-8388
CY  - Amsterdam [u.a.]
PB  - ScienceDirect
M1  - FZJ-2020-02990
SP  - 153363 -
PY  - 2020
AB  - The crystal structure of the complex intermetallic phase o-Al13Co4 was first investigated in 1994, but some open questions still remained. The new refinement of the crystal structure using high-resolution X-ray diffraction data resulted in a much more complex model including a large number of split positions (space group Pnm21, a = 8.1590(6) Å, b = 12.349(1) Å, c = 14.453(1) Å). The model is interpreted in terms of local violation of the translational symmetry, which is confirmed by HRTEM and HRSTEM investigations. Chemical bonding between two partial structures in o-Al13Co4 - three-dimensional framework and linear Co–Al–Co groups in cages of the latter – along with the stacking faults (local twinning) are discussed as possible reasons for such an extended disorder.    Previous article in issue
LB  - PUB:(DE-HGF)16
UR  - <Go to ISI:>//WOS:000507854700139
DO  - DOI:10.1016/j.jallcom.2019.153363
UR  - https://juser.fz-juelich.de/record/878669
ER  -