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All sourcesNASA NTRSDOE OSTI
DOE OSTI2020

Materials Data on Tb(SiPd)2 by Materials Project

TbPd2Si2 crystallizes in the tetragonal I4/mmm space group. The structure is three-dimensional. Tb4+ is bonded to eight equivalent Si4- atoms to form TbSi8 hexagonal bipyramids that share corners with sixteen equivalent PdSi4 tetrahedra, edges with four equivalent TbSi8 hexagonal bipyramids, edges with eight equivalent PdSi4 tetrahedra, and faces with four equivalent TbSi8 hexagonal bipyramids. All Tb–Si bond lengths are 3.17 Å. Pd2+ is bonded to four equivalent Si4- atoms to form PdSi4 tetrahedra that share corners with eight equivalent TbSi8 hexagonal bipyramids, corners with four equivalent PdSi4 tetrahedra, edges with four equivalent TbSi8 hexagonal bipyramids, and edges with four equivalent PdSi4 tetrahedra. All Pd–Si bond lengths are 2.47 Å. Si4- is bonded in a 9-coordinate geometry to four equivalent Tb4+, four equivalent Pd2+, and one Si4- atom. The Si–Si bond length is 2.33 Å.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on TbSiPd2 by Materials Project

TbPd2Si is delta Molybdenum Boride-derived structured and crystallizes in the orthorhombic Pnma space group. The structure is three-dimensional. Tb is bonded in a 11-coordinate geometry to ten equivalent Pd and three equivalent Si atoms. There are a spread of Tb–Pd bond distances ranging from 2.98–3.53 Å. There are a spread of Tb–Si bond distances ranging from 2.99–3.03 Å. Pd is bonded in a 12-coordinate geometry to five equivalent Tb, four equivalent Pd, and three equivalent Si atoms. There are a spread of Pd–Pd bond distances ranging from 2.78–3.07 Å. There are a spread of Pd–Si bond distances ranging from 2.50–2.63 Å. Si is bonded in a 9-coordinate geometry to three equivalent Tb and six equivalent Pd atoms.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on TbSiPd by Materials Project

TbPdSi crystallizes in the orthorhombic Pnma space group. The structure is three-dimensional. there are three inequivalent Tb sites. In the first Tb site, Tb is bonded in a 12-coordinate geometry to six Pd and six Si atoms. There are a spread of Tb–Pd bond distances ranging from 2.96–3.12 Å. There are a spread of Tb–Si bond distances ranging from 3.09–3.24 Å. In the second Tb site, Tb is bonded in a 12-coordinate geometry to six Pd and six Si atoms. There are a spread of Tb–Pd bond distances ranging from 3.13–3.22 Å. There are a spread of Tb–Si bond distances ranging from 2.97–3.11 Å. In the third Tb site, Tb is bonded in a 12-coordinate geometry to six Pd and six Si atoms. There are a spread of Tb–Pd bond distances ranging from 2.92–3.12 Å. There are a spread of Tb–Si bond distances ranging from 3.05–3.23 Å. There are three inequivalent Pd sites. In the first Pd site, Pd is bonded in a 10-coordinate geometry to six Tb, one Pd, and three Si atoms. The Pd–Pd bond length is 3.04 Å. There are one shorter (2.51 Å) and two longer (2.52 Å) Pd–Si bond lengths. In the second Pd site, Pd is bonded in a 10-coordinate geometry to six Tb, one Pd, and three equivalent Si atoms. There are two shorter (2.52 Å) and one longer (2.58 Å) Pd–Si bond lengths. In the third Pd site, Pd is bonded in a 10-coordinate geometry to six Tb and four Si atoms. There are a spread of Pd–Si bond distances ranging from 2.54–2.84 Å. There are three inequivalent Si sites. In the first Si site, Si is bonded in a 10-coordinate geometry to six Tb and four Pd atoms. In the second Si site, Si is bonded in a 10-coordinate geometry to six Tb, three equivalent Pd, and one Si atom. The Si–Si bond length is 2.62 Å. In the third Si site, Si is bonded in a 10-coordinate geometry to six Tb, three Pd, and one Si atom.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on Tb2Si3Pd by Materials Project

Tb2PdSi3 crystallizes in the hexagonal P6_3/mmc space group. The structure is three-dimensional. there are two inequivalent Tb4+ sites. In the first Tb4+ site, Tb4+ is bonded to eight equivalent Si4- atoms to form TbSi8 hexagonal bipyramids that share corners with eight equivalent TbSi8 hexagonal bipyramids, edges with four equivalent TbSi12 cuboctahedra, edges with four equivalent TbSi8 hexagonal bipyramids, faces with two equivalent TbSi12 cuboctahedra, and faces with two equivalent TbSi8 hexagonal bipyramids. There are four shorter (3.06 Å) and four longer (3.16 Å) Tb–Si bond lengths. In the second Tb4+ site, Tb4+ is bonded to twelve equivalent Si4- atoms to form TbSi12 cuboctahedra that share edges with twelve equivalent TbSi8 hexagonal bipyramids, faces with two equivalent TbSi12 cuboctahedra, and faces with six equivalent TbSi8 hexagonal bipyramids. There are six shorter (3.07 Å) and six longer (3.09 Å) Tb–Si bond lengths. Pd4+ is bonded in a trigonal planar geometry to three equivalent Si4- atoms. All Pd–Si bond lengths are 2.41 Å. Si4- is bonded in a 1-coordinate geometry to six Tb4+, one Pd4+, and two equivalent Si4- atoms. Both Si–Si bond lengths are 2.36 Å.

36 MATERIALS SCIENCE↗