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Materials Data on AlFe3 by Materials Project

Fe3Al is Uranium Silicide structured and crystallizes in the cubic Pm-3m space group. The structure is three-dimensional. Fe is bonded to eight equivalent Fe and four equivalent Al atoms to form FeAl4Fe8 cuboctahedra that share corners with twelve equivalent FeAl4Fe8 cuboctahedra, edges with eight equivalent AlFe12 cuboctahedra, edges with sixteen equivalent FeAl4Fe8 cuboctahedra, faces with four equivalent AlFe12 cuboctahedra, and faces with fourteen equivalent FeAl4Fe8 cuboctahedra. All Fe–Fe bond lengths are 2.58 Å. All Fe–Al bond lengths are 2.58 Å. Al is bonded to twelve equivalent Fe atoms to form AlFe12 cuboctahedra that share corners with twelve equivalent AlFe12 cuboctahedra, edges with twenty-four equivalent FeAl4Fe8 cuboctahedra, faces with six equivalent AlFe12 cuboctahedra, and faces with twelve equivalent FeAl4Fe8 cuboctahedra.

36 MATERIALS SCIENCE↗

Materials Data on Al12Fe7 by Materials Project

Fe7Al12 crystallizes in the triclinic P-1 space group. The structure is three-dimensional. there are four inequivalent Fe sites. In the first Fe site, Fe is bonded in a 8-coordinate geometry to one Fe and eight Al atoms. The Fe–Fe bond length is 2.74 Å. There are a spread of Fe–Al bond distances ranging from 2.44–2.56 Å. In the second Fe site, Fe is bonded in a 11-coordinate geometry to three Fe and eight Al atoms. There are a spread of Fe–Fe bond distances ranging from 2.59–2.70 Å. There are a spread of Fe–Al bond distances ranging from 2.47–2.63 Å. In the third Fe site, Fe is bonded in a 12-coordinate geometry to eight Al atoms. There are a spread of Fe–Al bond distances ranging from 2.46–2.59 Å. In the fourth Fe site, Fe is bonded in a 11-coordinate geometry to four Fe and seven Al atoms. The Fe–Fe bond length is 2.44 Å. There are a spread of Fe–Al bond distances ranging from 2.46–2.68 Å. There are six inequivalent Al sites. In the first Al site, Al is bonded in a 5-coordinate geometry to five Fe atoms. In the second Al site, Al is bonded in a 5-coordinate geometry to five Fe atoms. In the third Al site, Al is bonded in a 5-coordinate geometry to five Fe atoms. In the fourth Al site, Al is bonded in a 12-coordinate geometry to four Fe atoms. In the fifth Al site, Al is bonded in a 5-coordinate geometry to five Fe atoms. In the sixth Al site, Al is bonded in a 3-coordinate geometry to three Fe atoms.

36 MATERIALS SCIENCE↗