Engineering Papers⌕ Search

SEARCH · Engineering Papers

Results for “Tb5Mg”

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 Tb5Mg by Materials Project

MgTb5 crystallizes in the trigonal R32 space group. The structure is three-dimensional. Mg is bonded to twelve Tb atoms to form MgTb12 cuboctahedra that share corners with six equivalent MgTb12 cuboctahedra, corners with twelve TbTb9Mg3 cuboctahedra, edges with six equivalent MgTb12 cuboctahedra, edges with twelve TbTb10Mg2 cuboctahedra, and faces with twenty TbTb10Mg2 cuboctahedra. There are six shorter (3.46 Å) and six longer (3.56 Å) Mg–Tb bond lengths. There are eight inequivalent Tb sites. In the first Tb site, Tb is bonded to two equivalent Mg and ten Tb atoms to form distorted TbTb10Mg2 cuboctahedra that share corners with eighteen TbTb10Mg2 cuboctahedra, edges with four equivalent MgTb12 cuboctahedra, edges with fourteen TbTb10Mg2 cuboctahedra, faces with four equivalent MgTb12 cuboctahedra, and faces with sixteen TbTb10Mg2 cuboctahedra. There are a spread of Tb–Tb bond distances ranging from 3.44–3.63 Å. In the second Tb site, Tb is bonded to two equivalent Mg and ten Tb atoms to form distorted TbTb10Mg2 cuboctahedra that share corners with eighteen TbTb10Mg2 cuboctahedra, edges with four equivalent MgTb12 cuboctahedra, edges with fourteen TbTb9Mg3 cuboctahedra, faces with four equivalent MgTb12 cuboctahedra, and faces with sixteen TbTb10Mg2 cuboctahedra. There are a spread of Tb–Tb bond distances ranging from 3.44–3.63 Å. In the third Tb site, Tb is bonded to two equivalent Mg and ten Tb atoms to form distorted TbTb10Mg2 cuboctahedra that share corners with eighteen TbTb10Mg2 cuboctahedra, edges with four equivalent MgTb12 cuboctahedra, edges with fourteen TbTb10Mg2 cuboctahedra, faces with four equivalent MgTb12 cuboctahedra, and faces with sixteen TbTb10Mg2 cuboctahedra. There are a spread of Tb–Tb bond distances ranging from 3.44–3.63 Å. In the fourth Tb site, Tb is bonded to three equivalent Mg and nine Tb atoms to form TbTb9Mg3 cuboctahedra that share corners with six equivalent MgTb12 cuboctahedra, corners with twelve TbTb9Mg3 cuboctahedra, edges with eighteen TbTb10Mg2 cuboctahedra, faces with four equivalent MgTb12 cuboctahedra, and faces with sixteen TbTb10Mg2 cuboctahedra. There are one shorter (3.44 Å) and three longer (3.56 Å) Tb–Tb bond lengths. In the fifth Tb site, Tb is bonded to three equivalent Mg and nine Tb atoms to form TbTb9Mg3 cuboctahedra that share corners with six equivalent MgTb12 cuboctahedra, corners with twelve TbTb9Mg3 cuboctahedra, edges with eighteen TbTb10Mg2 cuboctahedra, faces with four equivalent MgTb12 cuboctahedra, and faces with sixteen TbTb10Mg2 cuboctahedra. All Tb–Mg bond lengths are 3.56 Å. There are a spread of Tb–Tb bond distances ranging from 3.44–3.56 Å. In the sixth Tb site, Tb is bonded to two equivalent Mg and ten Tb atoms to form distorted TbTb10Mg2 cuboctahedra that share corners with eighteen TbTb10Mg2 cuboctahedra, edges with four equivalent MgTb12 cuboctahedra, edges with fourteen TbTb9Mg3 cuboctahedra, faces with four equivalent MgTb12 cuboctahedra, and faces with sixteen TbTb10Mg2 cuboctahedra. There are one shorter (3.44 Å) and one longer (3.51 Å) Tb–Tb bond lengths. In the seventh Tb site, Tb is bonded to three equivalent Mg and nine Tb atoms to form TbTb9Mg3 cuboctahedra that share corners with six equivalent MgTb12 cuboctahedra, corners with twelve TbTb9Mg3 cuboctahedra, edges with eighteen TbTb10Mg2 cuboctahedra, faces with four equivalent MgTb12 cuboctahedra, and faces with sixteen TbTb10Mg2 cuboctahedra. All Tb–Mg bond lengths are 3.56 Å. There are one shorter (3.44 Å) and three longer (3.56 Å) Tb–Tb bond lengths. In the eighth Tb site, Tb is bonded to three equivalent Mg and nine Tb atoms to form TbTb9Mg3 cuboctahedra that share corners with six equivalent MgTb12 cuboctahedra, corners with twelve TbTb9Mg3 cuboctahedra, edges with eighteen TbTb10Mg2 cuboctahedra, faces with four equivalent MgTb12 cuboctahedra, and faces with sixteen TbTb10Mg2 cuboctahedra. All Tb–Mg bond lengths are 3.56 Å. The Tb–Tb bond length is 3.51 Å.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on Tb5Mg by Materials Project

MgTb5 crystallizes in the orthorhombic Amm2 space group. The structure is three-dimensional. Mg is bonded in a 10-coordinate geometry to ten Tb atoms. There are a spread of Mg–Tb bond distances ranging from 3.46–3.55 Å. There are five inequivalent Tb sites. In the first Tb site, Tb is bonded to twelve Tb atoms to form TbTb12 cuboctahedra that share corners with eighteen TbTb12 cuboctahedra, edges with ten TbTb10Mg2 cuboctahedra, and faces with eighteen TbTb12 cuboctahedra. There are a spread of Tb–Tb bond distances ranging from 3.48–3.59 Å. In the second Tb site, Tb is bonded to four equivalent Mg and eight Tb atoms to form a mixture of distorted edge, face, and corner-sharing TbTb8Mg4 cuboctahedra. There are a spread of Tb–Tb bond distances ranging from 3.45–3.59 Å. In the third Tb site, Tb is bonded to two equivalent Mg and ten Tb atoms to form a mixture of distorted edge, face, and corner-sharing TbTb10Mg2 cuboctahedra. There are four shorter (3.48 Å) and two longer (3.59 Å) Tb–Tb bond lengths. In the fourth Tb site, Tb is bonded to two equivalent Mg and ten Tb atoms to form TbTb10Mg2 cuboctahedra that share corners with twelve TbTb10Mg2 cuboctahedra, edges with fifteen TbTb12 cuboctahedra, and faces with eighteen TbTb12 cuboctahedra. There are two shorter (3.58 Å) and two longer (3.59 Å) Tb–Tb bond lengths. In the fifth Tb site, Tb is bonded to two equivalent Mg and ten Tb atoms to form distorted TbTb10Mg2 cuboctahedra that share corners with twelve TbTb10Mg2 cuboctahedra, edges with fifteen TbTb8Mg4 cuboctahedra, and faces with eighteen TbTb12 cuboctahedra. Both Tb–Tb bond lengths are 3.59 Å.

36 MATERIALS SCIENCE↗