Ti<sub>4</sub>Fe<sub>2</sub>C<sub>0.82</sub>O<sub>0.18</sub>
The phase with composition Ti<sub>4</sub>Fe<sub>2</sub>C<sub>0.82</sub>O<sub>0.18</sub>, tetra-titanium diiron carbide oxide, was unexpectedly synthesized by high-pressure sinter-ing (HPS) of a stoichiometric mixture with nominal composition Ti<sub>2</sub>Fe. The Ti<sub>4</sub>Fe<sub>2</sub>C<sub>0.82</sub>O<sub>0.18</sub> phase crystallizes in the <i>Fd</i> <i>m</i> space group and can be considered as the Ti<sub>2</sub>Fe structure filled with C and O atoms co-occupying the same octa-hedral void [occupancy ratio 0.82 (7):0.18 (7)]. The Ti<sub>4</sub>Fe<sub>2</sub>C<sub>0.82</sub>O<sub>0.18</sub> phase is isotypic with Ti<sub>4</sub>Ni<sub>2</sub>C and Ti<sub>4</sub>Fe<sub>2</sub>O<sub>0.407</sub>, and is the first example where C and O atoms co-occupy the same site in filled Ti<sub>2</sub>Fe structures.
Authors
- Huizi Liu
- Changzeng Fan (ORCID: https://orcid.org/0000-0001-6727-5912)
- Bin Wen (ORCID: https://orcid.org/0000-0001-9846-5452)
- Lifeng Zhang (ORCID: https://orcid.org/0000-0001-7394-5433)
Institutions
- North China University of Technology (CN)
- Yanshan University (CN)
Publication Details
- Journal
- IUCrData
- Published
- 2024-09-28
- DOI
- https://doi.org/10.1107/s2414314624008903
- Primary Topic
- Advanced materials and composites
- Type
- article
- Field-Weighted Citation Impact
- 0.00
Funders
- National Natural Science Foundation of China
- Natural Science Foundation of Hebei Province
- Yanshan University
- State Key Laboratory of Metastable Materials Science and Technology