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DOE OSTI2020

Materials Data on Sm3Eu by Materials Project

EuSm3 is Magnesium-derived structured and crystallizes in the hexagonal P6_3/mmc space group. The structure is three-dimensional. Eu is bonded to twelve Sm atoms to form EuSm12 cuboctahedra that share corners with six equivalent EuSm12 cuboctahedra, corners with twelve SmSm8Eu4 cuboctahedra, edges with eighteen SmSm8Eu4 cuboctahedra, faces with eight equivalent EuSm12 cuboctahedra, and faces with twelve SmSm8Eu4 cuboctahedra. There are six shorter (3.69 Å) and six longer (3.70 Å) Eu–Sm bond lengths. There are two inequivalent Sm sites. In the first Sm site, Sm is bonded to four equivalent Eu and eight Sm atoms to form SmSm8Eu4 cuboctahedra that share corners with four equivalent EuSm12 cuboctahedra, corners with fourteen SmSm8Eu4 cuboctahedra, edges with six equivalent EuSm12 cuboctahedra, edges with twelve SmSm8Eu4 cuboctahedra, faces with four equivalent EuSm12 cuboctahedra, and faces with sixteen SmSm8Eu4 cuboctahedra. There are a spread of Sm–Sm bond distances ranging from 3.64–3.77 Å. In the second Sm site, Sm is bonded to four equivalent Eu and eight equivalent Sm atoms to form SmSm8Eu4 cuboctahedra that share corners with four equivalent EuSm12 cuboctahedra, corners with fourteen SmSm8Eu4 cuboctahedra, edges with six equivalent EuSm12 cuboctahedra, edges with twelve equivalent SmSm8Eu4 cuboctahedra, faces with four equivalent EuSm12 cuboctahedra, and faces with sixteen SmSm8Eu4 cuboctahedra.

36 MATERIALS SCIENCE↗

DOE OSTI2020

Materials Data on SmEu3 by Materials Project

Eu3Sm is Magnesium-derived structured and crystallizes in the hexagonal P6_3/mmc space group. The structure is three-dimensional. Eu is bonded to eight equivalent Eu and four equivalent Sm atoms to form EuSm4Eu8 cuboctahedra that share corners with four equivalent SmEu12 cuboctahedra, corners with fourteen equivalent EuSm4Eu8 cuboctahedra, edges with six equivalent SmEu12 cuboctahedra, edges with twelve equivalent EuSm4Eu8 cuboctahedra, faces with four equivalent SmEu12 cuboctahedra, and faces with sixteen equivalent EuSm4Eu8 cuboctahedra. There are a spread of Eu–Eu bond distances ranging from 3.79–3.91 Å. There are two shorter (3.81 Å) and two longer (3.85 Å) Eu–Sm bond lengths. Sm is bonded to twelve equivalent Eu atoms to form SmEu12 cuboctahedra that share corners with six equivalent SmEu12 cuboctahedra, corners with twelve equivalent EuSm4Eu8 cuboctahedra, edges with eighteen equivalent EuSm4Eu8 cuboctahedra, faces with eight equivalent SmEu12 cuboctahedra, and faces with twelve equivalent EuSm4Eu8 cuboctahedra.

36 MATERIALS SCIENCE↗

DOE OSTI2020

Materials Data on Sm3Eu by Materials Project

EuSm3 is Uranium Silicide structured and crystallizes in the cubic Pm-3m space group. The structure is three-dimensional. Eu is bonded to twelve equivalent Sm atoms to form EuSm12 cuboctahedra that share corners with twelve equivalent EuSm12 cuboctahedra, edges with twenty-four equivalent SmSm8Eu4 cuboctahedra, faces with six equivalent EuSm12 cuboctahedra, and faces with twelve equivalent SmSm8Eu4 cuboctahedra. All Eu–Sm bond lengths are 3.63 Å. Sm is bonded to four equivalent Eu and eight equivalent Sm atoms to form SmSm8Eu4 cuboctahedra that share corners with twelve equivalent SmSm8Eu4 cuboctahedra, edges with eight equivalent EuSm12 cuboctahedra, edges with sixteen equivalent SmSm8Eu4 cuboctahedra, faces with four equivalent EuSm12 cuboctahedra, and faces with fourteen equivalent SmSm8Eu4 cuboctahedra. All Sm–Sm bond lengths are 3.63 Å.

36 MATERIALS SCIENCE↗