Engineering Papers⌕ Search

SEARCH · Engineering Papers

Results for “Ca-Tb”

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.

Materials Data on CaTb3 by Materials Project

CaTb3 is Uranium Silicide structured and crystallizes in the cubic Pm-3m space group. The structure is three-dimensional. Ca is bonded to twelve equivalent Tb atoms to form CaTb12 cuboctahedra that share corners with twelve equivalent CaTb12 cuboctahedra, edges with twenty-four equivalent TbCa4Tb8 cuboctahedra, faces with six equivalent CaTb12 cuboctahedra, and faces with twelve equivalent TbCa4Tb8 cuboctahedra. All Ca–Tb bond lengths are 3.61 Å. Tb is bonded to four equivalent Ca and eight equivalent Tb atoms to form TbCa4Tb8 cuboctahedra that share corners with twelve equivalent TbCa4Tb8 cuboctahedra, edges with eight equivalent CaTb12 cuboctahedra, edges with sixteen equivalent TbCa4Tb8 cuboctahedra, faces with four equivalent CaTb12 cuboctahedra, and faces with fourteen equivalent TbCa4Tb8 cuboctahedra. All Tb–Tb bond lengths are 3.61 Å.

36 MATERIALS SCIENCE↗

Materials Data on Ca3Tb by Materials Project

Ca3Tb is beta Cu3Ti-like structured and crystallizes in the hexagonal P6_3/mmc space group. The structure is three-dimensional. Ca is bonded to eight equivalent Ca and four equivalent Tb atoms to form CaCa8Tb4 cuboctahedra that share corners with four equivalent TbCa12 cuboctahedra, corners with fourteen equivalent CaCa8Tb4 cuboctahedra, edges with six equivalent TbCa12 cuboctahedra, edges with twelve equivalent CaCa8Tb4 cuboctahedra, faces with four equivalent TbCa12 cuboctahedra, and faces with sixteen equivalent CaCa8Tb4 cuboctahedra. There are a spread of Ca–Ca bond distances ranging from 3.71–3.87 Å. All Ca–Tb bond lengths are 3.79 Å. Tb is bonded to twelve equivalent Ca atoms to form TbCa12 cuboctahedra that share corners with six equivalent TbCa12 cuboctahedra, corners with twelve equivalent CaCa8Tb4 cuboctahedra, edges with eighteen equivalent CaCa8Tb4 cuboctahedra, faces with eight equivalent TbCa12 cuboctahedra, and faces with twelve equivalent CaCa8Tb4 cuboctahedra.

36 MATERIALS SCIENCE↗