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All sourcesNASA NTRSDOE OSTI
DOE OSTI2020

Materials Data on Dy2AlCo2 by Materials Project

Dy2Co2Al crystallizes in the orthorhombic Immm space group. The structure is three-dimensional. Dy is bonded in a 10-coordinate geometry to six equivalent Co atoms. There are four shorter (2.90 Å) and two longer (2.91 Å) Dy–Co bond lengths. Co is bonded in a 9-coordinate geometry to six equivalent Dy, one Co, and two equivalent Al atoms. The Co–Co bond length is 2.44 Å. Both Co–Al bond lengths are 2.52 Å. Al is bonded to four equivalent Co atoms to form distorted edge-sharing AlCo4 cuboctahedra.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on DyAlCo4 by Materials Project

DyCo4Al crystallizes in the orthorhombic Cmmm space group. The structure is three-dimensional. Dy is bonded in a distorted hexagonal planar geometry to fourteen Co and four equivalent Al atoms. There are a spread of Dy–Co bond distances ranging from 2.85–3.21 Å. All Dy–Al bond lengths are 3.18 Å. There are two inequivalent Co sites. In the first Co site, Co is bonded in a 12-coordinate geometry to three equivalent Dy, four equivalent Co, and two equivalent Al atoms. All Co–Co bond lengths are 2.46 Å. Both Co–Al bond lengths are 2.52 Å. In the second Co site, Co is bonded to four equivalent Dy, six Co, and two equivalent Al atoms to form distorted CoDy4Al2Co6 cuboctahedra that share corners with four equivalent AlDy4Co8 cuboctahedra, corners with twelve equivalent CoDy4Al2Co6 cuboctahedra, edges with four equivalent AlDy4Co8 cuboctahedra, edges with six equivalent CoDy4Al2Co6 cuboctahedra, faces with four equivalent AlDy4Co8 cuboctahedra, and faces with six equivalent CoDy4Al2Co6 cuboctahedra. Both Co–Co bond lengths are 2.45 Å. Both Co–Al bond lengths are 2.49 Å. Al is bonded to four equivalent Dy and eight Co atoms to form distorted AlDy4Co8 cuboctahedra that share corners with eight equivalent CoDy4Al2Co6 cuboctahedra, corners with eight equivalent AlDy4Co8 cuboctahedra, edges with two equivalent AlDy4Co8 cuboctahedra, edges with eight equivalent CoDy4Al2Co6 cuboctahedra, faces with two equivalent AlDy4Co8 cuboctahedra, and faces with eight equivalent CoDy4Al2Co6 cuboctahedra.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on DyAlCo4 by Materials Project

DyCo4Al crystallizes in the hexagonal P-6m2 space group. The structure is three-dimensional. Dy is bonded in a 6-coordinate geometry to fifteen Co and three equivalent Al atoms. There are three shorter (2.90 Å) and twelve longer (3.17 Å) Dy–Co bond lengths. All Dy–Al bond lengths are 2.90 Å. There are two inequivalent Co sites. In the first Co site, Co is bonded to three equivalent Dy, six equivalent Co, and three equivalent Al atoms to form CoDy3Al3Co6 cuboctahedra that share corners with nine equivalent AlDy3Co9 cuboctahedra, corners with twelve equivalent CoDy4Al2Co6 cuboctahedra, edges with six equivalent CoDy3Al3Co6 cuboctahedra, faces with three equivalent AlDy3Co9 cuboctahedra, and faces with twenty CoDy3Al3Co6 cuboctahedra. All Co–Co bond lengths are 2.41 Å. All Co–Al bond lengths are 2.90 Å. In the second Co site, Co is bonded to four equivalent Dy, six Co, and two equivalent Al atoms to form distorted CoDy4Al2Co6 cuboctahedra that share corners with four equivalent AlDy3Co9 cuboctahedra, corners with twenty CoDy3Al3Co6 cuboctahedra, edges with ten equivalent CoDy4Al2Co6 cuboctahedra, faces with six equivalent AlDy3Co9 cuboctahedra, and faces with sixteen CoDy3Al3Co6 cuboctahedra. There are two shorter (2.48 Å) and two longer (2.55 Å) Co–Co bond lengths. Both Co–Al bond lengths are 2.43 Å. Al is bonded to three equivalent Dy and nine Co atoms to form distorted AlDy3Co9 cuboctahedra that share corners with twenty-one CoDy3Al3Co6 cuboctahedra, edges with six equivalent AlDy3Co9 cuboctahedra, faces with two equivalent AlDy3Co9 cuboctahedra, and faces with twenty-one CoDy3Al3Co6 cuboctahedra.

36 MATERIALS SCIENCE↗