Engineering Papers⌕ Search

SEARCH · Engineering Papers

Results for “Ni-Ta-Te”

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.

6 records
All sourcesNASA NTRSDOE OSTI
DOE OSTI2020

Materials Data on TaNiTe2 by Materials Project

TaNiTe2 crystallizes in the orthorhombic Pmna space group. The structure is two-dimensional and consists of one TaNiTe2 sheet oriented in the (0, 1, 0) direction. Ta3+ is bonded in a 6-coordinate geometry to four Te2- atoms. There are two shorter (2.80 Å) and two longer (2.84 Å) Ta–Te bond lengths. Ni1+ is bonded to four Te2- atoms to form a mixture of distorted corner and edge-sharing NiTe4 trigonal pyramids. There are two shorter (2.57 Å) and two longer (2.61 Å) Ni–Te bond lengths. There are two inequivalent Te2- sites. In the first Te2- site, Te2- is bonded in a 4-coordinate geometry to two equivalent Ta3+ and two equivalent Ni1+ atoms. In the second Te2- site, Te2- is bonded in a 4-coordinate geometry to two equivalent Ta3+ and two equivalent Ni1+ atoms.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on Ta(NiTe)2 by Materials Project

Ta(NiTe)2 crystallizes in the orthorhombic Pnma space group. The structure is two-dimensional and consists of two Ta(NiTe)2 sheets oriented in the (0, 0, 1) direction. Ta is bonded in a 11-coordinate geometry to eight Ni and three Te atoms. There are a spread of Ta–Ni bond distances ranging from 2.71–2.76 Å. There are two shorter (2.90 Å) and one longer (2.95 Å) Ta–Te bond lengths. There are two inequivalent Ni sites. In the first Ni site, Ni is bonded in a 9-coordinate geometry to four equivalent Ta, two equivalent Ni, and three Te atoms. There are one shorter (2.41 Å) and one longer (2.53 Å) Ni–Ni bond lengths. There are one shorter (2.53 Å) and two longer (2.57 Å) Ni–Te bond lengths. In the second Ni site, Ni is bonded in a 9-coordinate geometry to four equivalent Ta, two equivalent Ni, and three Te atoms. There are one shorter (2.54 Å) and two longer (2.57 Å) Ni–Te bond lengths. There are two inequivalent Te sites. In the first Te site, Te is bonded in a 4-coordinate geometry to two equivalent Ta and two Ni atoms. In the second Te site, Te is bonded in a 5-coordinate geometry to one Ta and four Ni atoms.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on TaNiTe5 by Materials Project

TaNiTe5 crystallizes in the orthorhombic Cmcm space group. The structure is two-dimensional and consists of two TaNiTe5 sheets oriented in the (0, 1, 0) direction. Ta3+ is bonded in a 8-coordinate geometry to eight Te+0.80- atoms. There are a spread of Ta–Te bond distances ranging from 2.85–2.93 Å. Ni1+ is bonded to six Te+0.80- atoms to form edge-sharing NiTe6 octahedra. There are four shorter (2.59 Å) and two longer (2.61 Å) Ni–Te bond lengths. There are three inequivalent Te+0.80- sites. In the first Te+0.80- site, Te+0.80- is bonded in a 3-coordinate geometry to one Ta3+ and two equivalent Ni1+ atoms. In the second Te+0.80- site, Te+0.80- is bonded in a 3-coordinate geometry to two equivalent Ta3+ and one Ni1+ atom. In the third Te+0.80- site, Te+0.80- is bonded in a distorted L-shaped geometry to two equivalent Ta3+ atoms.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on TaNi2Te3 by Materials Project

TaNi2Te3 crystallizes in the monoclinic P2_1/m space group. The structure is two-dimensional and consists of one TaNi2Te3 sheet oriented in the (-1, 0, 1) direction. Ta3+ is bonded to five Te2- atoms to form distorted TaTe5 square pyramids that share corners with three NiTe4 tetrahedra, edges with two equivalent TaTe5 square pyramids, and edges with five NiTe4 tetrahedra. There are a spread of Ta–Te bond distances ranging from 2.74–2.91 Å. There are two inequivalent Ni+1.50+ sites. In the first Ni+1.50+ site, Ni+1.50+ is bonded to four Te2- atoms to form distorted NiTe4 tetrahedra that share a cornercorner with one TaTe5 square pyramid, corners with three NiTe4 tetrahedra, edges with two equivalent TaTe5 square pyramids, and edges with two equivalent NiTe4 tetrahedra. There are a spread of Ni–Te bond distances ranging from 2.53–2.59 Å. In the second Ni+1.50+ site, Ni+1.50+ is bonded to four Te2- atoms to form NiTe4 tetrahedra that share corners with two equivalent TaTe5 square pyramids, corners with three NiTe4 tetrahedra, edges with three equivalent TaTe5 square pyramids, and edges with two equivalent NiTe4 tetrahedra. There are a spread of Ni–Te bond distances ranging from 2.56–2.74 Å. There are three inequivalent Te2- sites. In the first Te2- site, Te2- is bonded in a 4-coordinate geometry to two equivalent Ta3+ and two Ni+1.50+ atoms. In the second Te2- site, Te2- is bonded in a 4-coordinate geometry to one Ta3+ and three equivalent Ni+1.50+ atoms. In the third Te2- site, Te2- is bonded in a 5-coordinate geometry to two equivalent Ta3+ and three equivalent Ni+1.50+ atoms.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on Ta4NiTe4 by Materials Project

Ta4NiTe4 crystallizes in the orthorhombic Pbam space group. The structure is one-dimensional and consists of two Ta4NiTe4 ribbons oriented in the (1, 0, 0) direction. there are four inequivalent Ta sites. In the first Ta site, Ta is bonded in a 6-coordinate geometry to two equivalent Ni and four Te atoms. Both Ta–Ni bond lengths are 2.62 Å. There are a spread of Ta–Te bond distances ranging from 2.87–2.90 Å. In the second Ta site, Ta is bonded in a 6-coordinate geometry to two equivalent Ni and four Te atoms. Both Ta–Ni bond lengths are 2.63 Å. There are a spread of Ta–Te bond distances ranging from 2.86–2.91 Å. In the third Ta site, Ta is bonded in a 6-coordinate geometry to two equivalent Ni and four Te atoms. Both Ta–Ni bond lengths are 2.63 Å. There are a spread of Ta–Te bond distances ranging from 2.88–2.92 Å. In the fourth Ta site, Ta is bonded in a 6-coordinate geometry to two equivalent Ni and four Te atoms. Both Ta–Ni bond lengths are 2.62 Å. There are two shorter (2.87 Å) and two longer (2.89 Å) Ta–Te bond lengths. Ni is bonded in a 10-coordinate geometry to eight Ta and two equivalent Ni atoms. Both Ni–Ni bond lengths are 2.38 Å. There are four inequivalent Te sites. In the first Te site, Te is bonded in a 4-coordinate geometry to four Ta atoms. In the second Te site, Te is bonded in a 4-coordinate geometry to four Ta atoms. In the third Te site, Te is bonded in a 4-coordinate geometry to four Ta atoms. In the fourth Te site, Te is bonded in a 4-coordinate geometry to four Ta atoms.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on Ta2Ni3Te5 by Materials Project

Ta2Ni3Te5 crystallizes in the orthorhombic Pnma space group. The structure is two-dimensional and consists of two Ta2Ni3Te5 sheets oriented in the (0, 1, 0) direction. there are two inequivalent Ta3+ sites. In the first Ta3+ site, Ta3+ is bonded to five Te2- atoms to form TaTe5 square pyramids that share a cornercorner with one TaTe5 square pyramid, corners with two equivalent NiTe4 tetrahedra, edges with two equivalent TaTe5 square pyramids, and edges with five NiTe4 tetrahedra. There are a spread of Ta–Te bond distances ranging from 2.78–2.90 Å. In the second Ta3+ site, Ta3+ is bonded to five Te2- atoms to form TaTe5 square pyramids that share a cornercorner with one TaTe5 square pyramid, corners with two equivalent NiTe4 tetrahedra, edges with two equivalent TaTe5 square pyramids, and edges with five NiTe4 tetrahedra. There are a spread of Ta–Te bond distances ranging from 2.78–2.91 Å. There are three inequivalent Ni+1.33+ sites. In the first Ni+1.33+ site, Ni+1.33+ is bonded to four Te2- atoms to form NiTe4 tetrahedra that share corners with two equivalent TaTe5 square pyramids, corners with three NiTe4 tetrahedra, edges with three TaTe5 square pyramids, and edges with two equivalent NiTe4 tetrahedra. There are a spread of Ni–Te bond distances ranging from 2.59–2.75 Å. In the second Ni+1.33+ site, Ni+1.33+ is bonded to four Te2- atoms to form distorted NiTe4 tetrahedra that share corners with four NiTe4 tetrahedra and edges with four TaTe5 square pyramids. There are two shorter (2.55 Å) and two longer (2.58 Å) Ni–Te bond lengths. In the third Ni+1.33+ site, Ni+1.33+ is bonded to four Te2- atoms to form NiTe4 tetrahedra that share corners with two equivalent TaTe5 square pyramids, corners with three NiTe4 tetrahedra, edges with three TaTe5 square pyramids, and edges with two equivalent NiTe4 tetrahedra. There are a spread of Ni–Te bond distances ranging from 2.59–2.77 Å. There are five inequivalent Te2- sites. In the first Te2- site, Te2- is bonded in a 5-coordinate geometry to two equivalent Ta3+ and three Ni+1.33+ atoms. In the second Te2- site, Te2- is bonded in a 4-coordinate geometry to two equivalent Ta3+ and two Ni+1.33+ atoms. In the third Te2- site, Te2- is bonded in a 4-coordinate geometry to two equivalent Ta3+ and two Ni+1.33+ atoms. In the fourth Te2- site, Te2- is bonded in a 4-coordinate geometry to two Ta3+ and two equivalent Ni+1.33+ atoms. In the fifth Te2- site, Te2- is bonded in a 5-coordinate geometry to two equivalent Ta3+ and three Ni+1.33+ atoms.

36 MATERIALS SCIENCE↗