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All sourcesNASA NTRSDOE OSTI
DOE OSTI2020

Materials Data on Eu3Cr by Materials Project

Eu3Cr is Uranium Silicide structured and crystallizes in the cubic Pm-3m space group. The structure is three-dimensional. Eu is bonded to eight equivalent Eu and four equivalent Cr atoms to form distorted EuEu8Cr4 cuboctahedra that share corners with twelve equivalent EuEu8Cr4 cuboctahedra, edges with eight equivalent CrEu12 cuboctahedra, edges with sixteen equivalent EuEu8Cr4 cuboctahedra, faces with four equivalent CrEu12 cuboctahedra, and faces with fourteen equivalent EuEu8Cr4 cuboctahedra. All Eu–Eu bond lengths are 3.68 Å. All Eu–Cr bond lengths are 3.68 Å. Cr is bonded to twelve equivalent Eu atoms to form CrEu12 cuboctahedra that share corners with twelve equivalent CrEu12 cuboctahedra, edges with twenty-four equivalent EuEu8Cr4 cuboctahedra, faces with six equivalent CrEu12 cuboctahedra, and faces with twelve equivalent EuEu8Cr4 cuboctahedra.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on EuCr3 by Materials Project

EuCr3 is alpha bismuth trifluoride structured and crystallizes in the cubic Fm-3m space group. The structure is three-dimensional. Eu is bonded in a distorted body-centered cubic geometry to fourteen Cr atoms. There are eight shorter (3.02 Å) and six longer (3.49 Å) Eu–Cr bond lengths. There are two inequivalent Cr sites. In the first Cr site, Cr is bonded in a distorted body-centered cubic geometry to four equivalent Eu and four equivalent Cr atoms. All Cr–Cr bond lengths are 3.02 Å. In the second Cr site, Cr is bonded in a 8-coordinate geometry to six equivalent Eu and eight equivalent Cr atoms.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on Eu3Cr by Materials Project

Eu3Cr is beta Cu3Ti-like 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 Cr atoms to form distorted EuEu8Cr4 cuboctahedra that share corners with four equivalent CrEu12 cuboctahedra, corners with fourteen equivalent EuEu8Cr4 cuboctahedra, edges with six equivalent CrEu12 cuboctahedra, edges with twelve equivalent EuEu8Cr4 cuboctahedra, faces with four equivalent CrEu12 cuboctahedra, and faces with sixteen equivalent EuEu8Cr4 cuboctahedra. There are a spread of Eu–Eu bond distances ranging from 3.61–3.88 Å. There are two shorter (3.61 Å) and two longer (3.75 Å) Eu–Cr bond lengths. Cr is bonded to twelve equivalent Eu atoms to form CrEu12 cuboctahedra that share corners with six equivalent CrEu12 cuboctahedra, corners with twelve equivalent EuEu8Cr4 cuboctahedra, edges with eighteen equivalent EuEu8Cr4 cuboctahedra, faces with eight equivalent CrEu12 cuboctahedra, and faces with twelve equivalent EuEu8Cr4 cuboctahedra.

36 MATERIALS SCIENCE↗