Materials Data on TaFe4W by Materials Project

Dataset · Fri Jun 05 04:00:00 EDT 2020

DOI:https://doi.org/10.17188/1754162· OSTI ID:1754162

TaWFe4 is Hexagonal Laves-derived structured and crystallizes in the trigonal P-3m1 space group. The structure is three-dimensional. Ta is bonded in a 1-coordinate geometry to three equivalent Ta, one W, and twelve Fe atoms. All Ta–Ta bond lengths are 2.96 Å. The Ta–W bond length is 2.89 Å. There are a spread of Ta–Fe bond distances ranging from 2.76–2.87 Å. W is bonded in a 7-coordinate geometry to one Ta and twelve Fe atoms. There are a spread of W–Fe bond distances ranging from 2.76–2.80 Å. There are three inequivalent Fe sites. In the first Fe site, Fe is bonded to six equivalent Ta and six equivalent Fe atoms to form FeTa6Fe6 cuboctahedra that share corners with twelve equivalent FeTa3Fe6W3 cuboctahedra, edges with six equivalent FeTa6Fe6 cuboctahedra, and faces with twenty FeFe6W6 cuboctahedra. All Fe–Fe bond lengths are 2.42 Å. In the second Fe site, Fe is bonded to six equivalent W and six equivalent Fe atoms to form FeFe6W6 cuboctahedra that share corners with twelve equivalent FeTa3Fe6W3 cuboctahedra, edges with six equivalent FeFe6W6 cuboctahedra, and faces with twenty FeTa6Fe6 cuboctahedra. All Fe–Fe bond lengths are 2.39 Å. In the third Fe site, Fe is bonded to three equivalent Ta, three equivalent W, and six Fe atoms to form FeTa3Fe6W3 cuboctahedra that share corners with eighteen FeTa6Fe6 cuboctahedra, edges with six equivalent FeTa3Fe6W3 cuboctahedra, and faces with eighteen FeTa6Fe6 cuboctahedra. There are two shorter (2.33 Å) and two longer (2.42 Å) Fe–Fe bond lengths.

• Research Organization: LBNL Materials Project; Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States)
• Sponsoring Organization: USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22)
• Contributing Organization: The Materials Project; MIT; UC Berkeley; Duke; U Louvain
• DOE Contract Number: AC02-05CH11231
• OSTI ID: 1754162
• Report Number(s): mp-1217935
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
Fe-Ta-W
TaFe4W
crystal structure