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All sourcesNASA NTRSDOE OSTI
DOE OSTI2020

Materials Data on Sm5Ga3 by Materials Project

Ga3Sm5 crystallizes in the tetragonal P4/ncc space group. The structure is three-dimensional. there are two inequivalent Sm sites. In the first Sm site, Sm is bonded in a 5-coordinate geometry to five Ga atoms. There are a spread of Sm–Ga bond distances ranging from 3.07–3.34 Å. In the second Sm site, Sm is bonded to five Ga atoms to form distorted corner-sharing SmGa5 square pyramids. There are one shorter (3.11 Å) and four longer (3.12 Å) Sm–Ga bond lengths. There are two inequivalent Ga sites. In the first Ga site, Ga is bonded in a 9-coordinate geometry to nine Sm atoms. In the second Ga site, Ga is bonded in a 9-coordinate geometry to eight Sm and one Ga atom. The Ga–Ga bond length is 2.65 Å.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on Sm5Ga3 by Materials Project

Ga3Sm5 crystallizes in the tetragonal I4/mcm space group. The structure is three-dimensional. there are two inequivalent Sm sites. In the first Sm site, Sm is bonded in a 4-coordinate geometry to six Ga atoms. There are four shorter (3.10 Å) and two longer (3.63 Å) Sm–Ga bond lengths. In the second Sm site, Sm is bonded to five Ga atoms to form a mixture of distorted edge, face, and corner-sharing SmGa5 trigonal bipyramids. There are a spread of Sm–Ga bond distances ranging from 3.14–3.24 Å. There are two inequivalent Ga sites. In the first Ga site, Ga is bonded in a 10-coordinate geometry to ten Sm atoms. In the second Ga site, Ga is bonded in a 9-coordinate geometry to eight Sm and one Ga atom. The Ga–Ga bond length is 2.64 Å.

36 MATERIALS SCIENCE↗