Engineering Papers⌕ Search

SEARCH · Engineering Papers

Results for “Ce-K”

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 KCe3 by Materials Project

KCe3 is Uranium Silicide structured and crystallizes in the cubic Pm-3m space group. The structure is three-dimensional. K is bonded to twelve equivalent Ce atoms to form KCe12 cuboctahedra that share corners with twelve equivalent KCe12 cuboctahedra, edges with twenty-four equivalent CeK4Ce8 cuboctahedra, faces with six equivalent KCe12 cuboctahedra, and faces with twelve equivalent CeK4Ce8 cuboctahedra. All K–Ce bond lengths are 3.61 Å. Ce is bonded to four equivalent K and eight equivalent Ce atoms to form CeK4Ce8 cuboctahedra that share corners with twelve equivalent CeK4Ce8 cuboctahedra, edges with eight equivalent KCe12 cuboctahedra, edges with sixteen equivalent CeK4Ce8 cuboctahedra, faces with four equivalent KCe12 cuboctahedra, and faces with fourteen equivalent CeK4Ce8 cuboctahedra. All Ce–Ce bond lengths are 3.61 Å.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on K3Ce by Materials Project

K3Ce is Uranium Silicide-like structured and crystallizes in the tetragonal I4/mmm space group. The structure is three-dimensional. there are two inequivalent K sites. In the first K site, K is bonded to eight K and four equivalent Ce atoms to form KK8Ce4 cuboctahedra that share corners with twelve equivalent KK8Ce4 cuboctahedra, edges with eight equivalent KK8Ce4 cuboctahedra, edges with eight equivalent CeK12 cuboctahedra, faces with four equivalent CeK12 cuboctahedra, and faces with ten equivalent KK8Ce4 cuboctahedra. There are four shorter (4.23 Å) and four longer (4.48 Å) K–K bond lengths. All K–Ce bond lengths are 4.48 Å. In the second K site, K is bonded in a distorted square co-planar geometry to eight equivalent K and four equivalent Ce atoms. All K–Ce bond lengths are 4.23 Å. Ce is bonded to twelve K atoms to form CeK12 cuboctahedra that share corners with four equivalent CeK12 cuboctahedra, edges with eight equivalent CeK12 cuboctahedra, edges with sixteen equivalent KK8Ce4 cuboctahedra, faces with four equivalent CeK12 cuboctahedra, and faces with eight equivalent KK8Ce4 cuboctahedra.

36 MATERIALS SCIENCE↗