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All sourcesNASA NTRSDOE OSTI
DOE OSTI2020

Materials Data on Sm3Rh2 by Materials Project

Sm3Rh2 crystallizes in the trigonal R-3 space group. The structure is three-dimensional. there are three inequivalent Sm sites. In the first Sm site, Sm is bonded in a 5-coordinate geometry to five equivalent Rh atoms. There are a spread of Sm–Rh bond distances ranging from 2.88–3.29 Å. In the second Sm site, Sm is bonded in an octahedral geometry to six equivalent Rh atoms. All Sm–Rh bond lengths are 3.02 Å. In the third Sm site, Sm is bonded in a 6-coordinate geometry to six equivalent Rh atoms. There are three shorter (2.90 Å) and three longer (3.11 Å) Sm–Rh bond lengths. Rh is bonded in a 8-coordinate geometry to eight Sm atoms.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on SmRh by Materials Project

SmRh is Tetraauricupride structured and crystallizes in the cubic Pm-3m space group. The structure is three-dimensional. Sm is bonded in a body-centered cubic geometry to eight equivalent Rh atoms. All Sm–Rh bond lengths are 3.04 Å. Rh is bonded in a body-centered cubic geometry to eight equivalent Sm atoms.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on SmRh2 by Materials Project

SmRh2 is Cubic Laves structured and crystallizes in the cubic Fd-3m space group. The structure is three-dimensional. Sm is bonded in a 12-coordinate geometry to twelve equivalent Rh atoms. All Sm–Rh bond lengths are 3.16 Å. Rh is bonded to six equivalent Sm and six equivalent Rh atoms to form a mixture of edge, face, and corner-sharing RhSm6Rh6 cuboctahedra. All Rh–Rh bond lengths are 2.70 Å.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on SmRh3 by Materials Project

SmRh3 crystallizes in the hexagonal P6_3/mmc space group. The structure is three-dimensional. there are two inequivalent Sm sites. In the first Sm site, Sm is bonded in a 12-coordinate geometry to twelve Rh atoms. There are a spread of Sm–Rh bond distances ranging from 3.05–3.35 Å. In the second Sm site, Sm is bonded in a distorted hexagonal planar geometry to eighteen Rh atoms. There are six shorter (3.07 Å) and twelve longer (3.43 Å) Sm–Rh bond lengths. There are four inequivalent Rh sites. In the first Rh site, Rh is bonded to five Sm and seven Rh atoms to form a mixture of distorted corner, edge, and face-sharing RhSm5Rh7 cuboctahedra. There are a spread of Rh–Rh bond distances ranging from 2.65–2.72 Å. In the second Rh site, Rh is bonded in a 12-coordinate geometry to three equivalent Sm and six equivalent Rh atoms. In the third Rh site, Rh is bonded in a 12-coordinate geometry to three equivalent Sm and six equivalent Rh atoms. In the fourth Rh site, Rh is bonded to six equivalent Sm and six equivalent Rh atoms to form RhSm6Rh6 cuboctahedra that share corners with twelve equivalent RhSm5Rh7 cuboctahedra, edges with six equivalent RhSm6Rh6 cuboctahedra, and faces with eighteen equivalent RhSm5Rh7 cuboctahedra.

36 MATERIALS SCIENCE↗