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Materials Data on Tb4Ni3Bi8 by Materials Project

Tb4Ni3Bi8 crystallizes in the tetragonal P-4m2 space group. The structure is three-dimensional. there are two inequivalent Tb sites. In the first Tb site, Tb is bonded in a 12-coordinate geometry to four equivalent Ni and eight Bi atoms. All Tb–Ni bond lengths are 3.11 Å. There are four shorter (3.29 Å) and four longer (3.43 Å) Tb–Bi bond lengths. In the second Tb site, Tb is bonded in a 11-coordinate geometry to two equivalent Ni and nine Bi atoms. Both Tb–Ni bond lengths are 3.10 Å. There are four shorter (3.31 Å) and five longer (3.41 Å) Tb–Bi bond lengths. There are two inequivalent Ni sites. In the first Ni site, Ni is bonded in a body-centered cubic geometry to four equivalent Tb and four equivalent Bi atoms. All Ni–Bi bond lengths are 2.67 Å. In the second Ni site, Ni is bonded in a body-centered cubic geometry to four equivalent Tb and four equivalent Bi atoms. All Ni–Bi bond lengths are 2.62 Å. There are four inequivalent Bi sites. In the first Bi site, Bi is bonded in a 7-coordinate geometry to five equivalent Tb and two equivalent Ni atoms. In the second Bi site, Bi is bonded in a 9-coordinate geometry to four equivalent Tb and four equivalent Ni atoms. In the third Bi site, Bi is bonded in a 8-coordinate geometry to four Tb and four equivalent Bi atoms. All Bi–Bi bond lengths are 3.21 Å. In the fourth Bi site, Bi is bonded in a 8-coordinate geometry to four Tb and four equivalent Bi atoms.

36 MATERIALS SCIENCE↗

Materials Data on Tb5Ni2Bi by Materials Project

Tb5Ni2Bi crystallizes in the tetragonal I4/mcm space group. The structure is three-dimensional. there are two inequivalent Tb sites. In the first Tb site, Tb is bonded to four equivalent Ni and two equivalent Bi atoms to form distorted TbNi4Bi2 octahedra that share corners with six equivalent TbNi4Bi2 octahedra, corners with sixteen equivalent TbNi3Bi2 square pyramids, and faces with eight equivalent TbNi3Bi2 square pyramids. The corner-sharing octahedra tilt angles range from 0–50°. All Tb–Ni bond lengths are 3.01 Å. Both Tb–Bi bond lengths are 3.41 Å. In the second Tb site, Tb is bonded to three equivalent Ni and two equivalent Bi atoms to form distorted TbNi3Bi2 square pyramids that share corners with four equivalent TbNi4Bi2 octahedra, corners with twelve equivalent TbNi3Bi2 square pyramids, edges with seven equivalent TbNi3Bi2 square pyramids, faces with two equivalent TbNi4Bi2 octahedra, and a faceface with one TbNi3Bi2 square pyramid. The corner-sharing octahedra tilt angles range from 42–61°. There are two shorter (2.88 Å) and one longer (2.93 Å) Tb–Ni bond lengths. Both Tb–Bi bond lengths are 3.32 Å. Ni is bonded in a 8-coordinate geometry to eight Tb atoms. Bi is bonded in a distorted q6 geometry to ten Tb atoms.

36 MATERIALS SCIENCE↗

Materials Data on TbNiBi by Materials Project

TbNiBi is half-Heusler structured and crystallizes in the cubic F-43m space group. The structure is three-dimensional. Tb is bonded in a 4-coordinate geometry to four equivalent Ni and six equivalent Bi atoms. All Tb–Ni bond lengths are 2.81 Å. All Tb–Bi bond lengths are 3.25 Å. Ni is bonded in a body-centered cubic geometry to four equivalent Tb and four equivalent Bi atoms. All Ni–Bi bond lengths are 2.81 Å. Bi is bonded in a distorted q6 geometry to six equivalent Tb and four equivalent Ni atoms.

36 MATERIALS SCIENCE↗