%0 Journal Article
%A Simon, Paul
%A Zelenina, Iryna
%A Ramlau, Reiner
%A Carrillo-Cabrera, Wilder
%A Burkhardt, Ulrich
%A Borrmann, Horst
%A Gil, Raul Cardoso
%A Feuerbacher, Michael
%A Gille, Peter
%A Grin, Yuri
%T Structural complexity of the intermetallic compound o-Al13Co4
%J Journal of alloys and compounds
%V 820
%@ 0925-8388
%C Amsterdam [u.a.]
%I ScienceDirect
%M FZJ-2020-02990
%P 153363 -
%D 2020
%X 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
%F PUB:(DE-HGF)16
%9 Journal Article
%U <Go to ISI:>//WOS:000507854700139
%R 10.1016/j.jallcom.2019.153363
%U https://juser.fz-juelich.de/record/878669