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All sourcesNASA NTRSDOE OSTI
DOE OSTI2020

Materials Data on CoGe2 by Materials Project

CoGe2 crystallizes in the orthorhombic Cmce space group. The structure is three-dimensional. Co is bonded in a 8-coordinate geometry to one Co and eight Ge atoms. The Co–Co bond length is 2.55 Å. There are four shorter (2.48 Å) and four longer (2.49 Å) Co–Ge bond lengths. There are two inequivalent Ge sites. In the first Ge site, Ge is bonded in a 7-coordinate geometry to four equivalent Co and one Ge atom. The Ge–Ge bond length is 2.55 Å. In the second Ge site, Ge is bonded to four equivalent Co atoms to form a mixture of distorted edge and corner-sharing GeCo4 tetrahedra.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on Sm3(CoGe2)2 by Materials Project

Sm3(CoGe2)2 crystallizes in the monoclinic C2/m space group. The structure is three-dimensional. there are two inequivalent Sm sites. In the first Sm site, Sm is bonded in a 12-coordinate geometry to four equivalent Co and eight Ge atoms. There are a spread of Sm–Co bond distances ranging from 2.97–3.32 Å. There are a spread of Sm–Ge bond distances ranging from 3.02–3.33 Å. In the second Sm site, Sm is bonded in a 6-coordinate geometry to eight Ge atoms. There are a spread of Sm–Ge bond distances ranging from 3.04–3.43 Å. Co is bonded in a 4-coordinate geometry to four equivalent Sm and four Ge atoms. There are a spread of Co–Ge bond distances ranging from 2.35–2.42 Å. There are two inequivalent Ge sites. In the first Ge site, Ge is bonded in a 6-coordinate geometry to six Sm, one Co, and two equivalent Ge atoms. Both Ge–Ge bond lengths are 2.76 Å. In the second Ge site, Ge is bonded in a 9-coordinate geometry to six Sm and three equivalent Co atoms.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on Gd3(CoGe2)2 by Materials Project

Gd3(CoGe2)2 crystallizes in the monoclinic C2/m space group. The structure is three-dimensional. there are two inequivalent Gd sites. In the first Gd site, Gd is bonded in a 12-coordinate geometry to four equivalent Co and eight Ge atoms. There are a spread of Gd–Co bond distances ranging from 2.89–3.27 Å. There are a spread of Gd–Ge bond distances ranging from 2.99–3.28 Å. In the second Gd site, Gd is bonded in a 6-coordinate geometry to eight Ge atoms. There are a spread of Gd–Ge bond distances ranging from 3.02–3.36 Å. Co is bonded in a 4-coordinate geometry to four equivalent Gd and four Ge atoms. There are a spread of Co–Ge bond distances ranging from 2.36–2.43 Å. There are two inequivalent Ge sites. In the first Ge site, Ge is bonded in a 10-coordinate geometry to six Gd, three equivalent Co, and one Ge atom. The Ge–Ge bond length is 3.07 Å. In the second Ge site, Ge is bonded in a 6-coordinate geometry to six Gd, one Co, and two equivalent Ge atoms. Both Ge–Ge bond lengths are 2.73 Å.

36 MATERIALS SCIENCE↗