This title appears in the Scientific Report :
2020
Please use the identifier:
http://hdl.handle.net/2128/25750 in citations.
Please use the identifier: http://dx.doi.org/10.1016/j.jallcom.2019.153363 in citations.
Structural complexity of the intermetallic compound o-Al13Co4
Structural complexity of the intermetallic compound o-Al13Co4
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...
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Personal Name(s): | Simon, Paul |
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Zelenina, Iryna / Ramlau, Reiner / Carrillo-Cabrera, Wilder / Burkhardt, Ulrich / Borrmann, Horst / Gil, Raul Cardoso / Feuerbacher, Michael / Gille, Peter / Grin, Yuri (Corresponding author) | |
Contributing Institute: |
Mikrostrukturforschung; PGI-5 |
Published in: | Journal of alloys and compounds, 820 (2020) S. 153363 - |
Imprint: |
Amsterdam [u.a.]
ScienceDirect
2020
|
DOI: |
10.1016/j.jallcom.2019.153363 |
Document Type: |
Journal Article |
Research Program: |
Controlling Collective States |
Link: |
Get full text Published on 2019-12-10. Available in OpenAccess from 2021-12-10. Published on 2019-12-10. Available in OpenAccess from 2021-12-10. Get full text |
Publikationsportal JuSER |
Please use the identifier: http://dx.doi.org/10.1016/j.jallcom.2019.153363 in citations.
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 |