Liu Huizi, Fan Changzeng, Wen Bin, Zhang Lifeng
State Key Laboratory of Metastable Materials Science and Technology Yanshan University,Qinhuangdao 066004 People's Republic of China.
Hebei Key Lab for Optimizing Metal Product Technology and Performance Yanshan University,Qinhuangdao 066004 People's Republic of China.
IUCrdata. 2024 Sep 30;9(Pt 9):x240890. doi: 10.1107/S2414314624008903. eCollection 2024 Sep.
The phase with composition TiFeCO, tetra-titanium diiron carbide oxide, was unexpectedly synthesized by high-pressure sinter-ing (HPS) of a stoichiometric mixture with nominal composition TiFe. The TiFeCO phase crystallizes in the space group and can be considered as the TiFe structure filled with C and O atoms co-occupying the same octa-hedral void [occupancy ratio 0.82 (7):0.18 (7)]. The TiFeCO phase is isotypic with TiNiC and TiFeO, and is the first example where C and O atoms co-occupy the same site in filled TiFe structures.
通过对名义成分为TiFe的化学计量混合物进行高压烧结（HPS），意外合成了组成为TiFeCO（四钛二铁碳氧化物）的相。TiFeCO相在该空间群中结晶，可被视为由C和O原子共同占据同一八面体空隙[占有率为0.82 (7):0.18 (7)]填充的TiFe结构。TiFeCO相与TiNiC和TiFeO是同型的，并且是C和O原子在填充的TiFe结构中共同占据同一位点的首个实例。
