Search NASA⌕ Search

SEARCH · Search NASA

Results for “Ce-Ni-Sb”

Search indexed NASA NTRS and DOE OSTI research on propulsion, heat transfer, battery materials and energy systems. Follow report and document links to the original sources.

Quote a phrase for an exact phrase match. Source license links do not imply unrestricted reuse.

2 records
All sourcesNASA NTRSDOE OSTI
DOE OSTI2020

Materials Data on CeNiSb2 by Materials Project

CeNiSb2 crystallizes in the tetragonal P4/nmm space group. The structure is three-dimensional. Ce3+ is bonded in a 8-coordinate geometry to eight Sb+2.50- atoms. There are four shorter (3.22 Å) and four longer (3.34 Å) Ce–Sb bond lengths. Ni2+ is bonded to four equivalent Sb+2.50- atoms to form a mixture of edge and corner-sharing NiSb4 tetrahedra. All Ni–Sb bond lengths are 2.59 Å. There are two inequivalent Sb+2.50- sites. In the first Sb+2.50- site, Sb+2.50- is bonded in a 8-coordinate geometry to four equivalent Ce3+ and four equivalent Ni2+ atoms. In the second Sb+2.50- site, Sb+2.50- is bonded in a 8-coordinate geometry to four equivalent Ce3+ and four equivalent Sb+2.50- atoms. All Sb–Sb bond lengths are 3.10 Å.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on CeNiSb3 by Materials Project

CeNiSb3 crystallizes in the orthorhombic Pbcm space group. The structure is three-dimensional. there are two inequivalent Ce3+ sites. In the first Ce3+ site, Ce3+ is bonded in a 9-coordinate geometry to nine Sb+1.67- atoms. There are a spread of Ce–Sb bond distances ranging from 3.17–3.31 Å. In the second Ce3+ site, Ce3+ is bonded in a 9-coordinate geometry to nine Sb+1.67- atoms. There are a spread of Ce–Sb bond distances ranging from 3.20–3.39 Å. Ni2+ is bonded to six Sb+1.67- atoms to form a mixture of corner, edge, and face-sharing NiSb6 octahedra. The corner-sharing octahedra tilt angles range from 39–44°. There are a spread of Ni–Sb bond distances ranging from 2.58–2.69 Å. There are five inequivalent Sb+1.67- sites. In the first Sb+1.67- site, Sb+1.67- is bonded in a 7-coordinate geometry to four Ce3+, two equivalent Ni2+, and one Sb+1.67- atom. The Sb–Sb bond length is 3.19 Å. In the second Sb+1.67- site, Sb+1.67- is bonded in a 6-coordinate geometry to four Ce3+ and two equivalent Ni2+ atoms. In the third Sb+1.67- site, Sb+1.67- is bonded in a 8-coordinate geometry to four Ce3+ and four equivalent Sb+1.67- atoms. There are a spread of Sb–Sb bond distances ranging from 3.04–3.13 Å. In the fourth Sb+1.67- site, Sb+1.67- is bonded in a 5-coordinate geometry to one Ce3+, four equivalent Ni2+, and one Sb+1.67- atom. In the fifth Sb+1.67- site, Sb+1.67- is bonded in a 5-coordinate geometry to one Ce3+ and four equivalent Ni2+ atoms.

36 MATERIALS SCIENCE↗