Materials Data on Ta3Cu by Materials Project

Dataset · Sun May 03 04:00:00 EDT 2020

DOI:https://doi.org/10.17188/1690931· OSTI ID:1690931

Ta3Cu is beta Cu3Ti-like structured and crystallizes in the tetragonal I4/mmm space group. The structure is three-dimensional. there are two inequivalent Ta sites. In the first Ta site, Ta is bonded to eight Ta and four equivalent Cu atoms to form distorted TaTa8Cu4 cuboctahedra that share corners with twelve equivalent TaTa8Cu4 cuboctahedra, edges with eight equivalent CuTa12 cuboctahedra, edges with sixteen TaTa8Cu4 cuboctahedra, faces with four equivalent CuTa12 cuboctahedra, and faces with fourteen TaTa8Cu4 cuboctahedra. There are four shorter (2.84 Å) and four longer (2.91 Å) Ta–Ta bond lengths. All Ta–Cu bond lengths are 2.91 Å. In the second Ta site, Ta is bonded to eight equivalent Ta and four equivalent Cu atoms to form distorted TaTa8Cu4 cuboctahedra that share corners with four equivalent TaTa8Cu4 cuboctahedra, corners with eight equivalent CuTa12 cuboctahedra, edges with twenty-four TaTa8Cu4 cuboctahedra, faces with six equivalent CuTa12 cuboctahedra, and faces with twelve TaTa8Cu4 cuboctahedra. All Ta–Cu bond lengths are 2.84 Å. Cu is bonded to twelve Ta atoms to form CuTa12 cuboctahedra that share corners with four equivalent CuTa12 cuboctahedra, corners with eight equivalent TaTa8Cu4 cuboctahedra, edges with eight equivalent CuTa12 cuboctahedra, edges with sixteen equivalent TaTa8Cu4 cuboctahedra, faces with four equivalent CuTa12 cuboctahedra, and faces with fourteen TaTa8Cu4 cuboctahedra.

• 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: 1690931
• Report Number(s): mp-1187227
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
Cu-Ta
Ta3Cu
crystal structure