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All sourcesNASA NTRSDOE OSTI
DOE OSTI2020

Materials Data on EuCoGe3 by Materials Project

EuCoGe3 crystallizes in the tetragonal I4mm space group. The structure is three-dimensional. Eu is bonded in a 12-coordinate geometry to five equivalent Co and twelve Ge atoms. There are one shorter (3.40 Å) and four longer (3.45 Å) Eu–Co bond lengths. There are a spread of Eu–Ge bond distances ranging from 3.15–3.31 Å. Co is bonded in a 5-coordinate geometry to five equivalent Eu and five Ge atoms. There are one shorter (2.30 Å) and four longer (2.36 Å) Co–Ge bond lengths. There are two inequivalent Ge sites. In the first Ge site, Ge is bonded in a 2-coordinate geometry to four equivalent Eu, two equivalent Co, and two equivalent Ge atoms. Both Ge–Ge bond lengths are 2.79 Å. In the second Ge site, Ge is bonded in a 1-coordinate geometry to four equivalent Eu, one Co, and four equivalent Ge atoms.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on Eu(CoGe)2 by Materials Project

EuCo2Ge2 crystallizes in the tetragonal I4/mmm space group. The structure is three-dimensional. Eu is bonded in a 8-coordinate geometry to eight equivalent Co and eight equivalent Ge atoms. All Eu–Co bond lengths are 3.30 Å. All Eu–Ge bond lengths are 3.16 Å. Co is bonded to four equivalent Eu and four equivalent Ge atoms to form a mixture of distorted face, edge, and corner-sharing CoEu4Ge4 tetrahedra. All Co–Ge bond lengths are 2.34 Å. Ge is bonded in a 9-coordinate geometry to four equivalent Eu, four equivalent Co, and one Ge atom. The Ge–Ge bond length is 2.83 Å.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on Eu2Co5Ge3 by Materials Project

Eu2Co5Ge3 crystallizes in the tetragonal P4mm space group. The structure is three-dimensional. there are two inequivalent Eu sites. In the first Eu site, Eu is bonded in a 12-coordinate geometry to twelve Co and four equivalent Ge atoms. There are a spread of Eu–Co bond distances ranging from 3.10–3.28 Å. All Eu–Ge bond lengths are 3.14 Å. In the second Eu site, Eu is bonded in a 8-coordinate geometry to eight Co and eight Ge atoms. All Eu–Co bond lengths are 3.29 Å. There are four shorter (3.16 Å) and four longer (3.18 Å) Eu–Ge bond lengths. There are three inequivalent Co sites. In the first Co site, Co is bonded in a 12-coordinate geometry to four Eu, six Co, and two equivalent Ge atoms. There are two shorter (2.33 Å) and four longer (2.84 Å) Co–Co bond lengths. Both Co–Ge bond lengths are 2.36 Å. In the second Co site, Co is bonded to four Eu and four Ge atoms to form a mixture of distorted edge and face-sharing CoEu4Ge4 tetrahedra. There are two shorter (2.33 Å) and two longer (2.38 Å) Co–Ge bond lengths. In the third Co site, Co is bonded in a 9-coordinate geometry to four equivalent Eu, four equivalent Co, and one Ge atom. The Co–Ge bond length is 2.56 Å. There are three inequivalent Ge sites. In the first Ge site, Ge is bonded in a 9-coordinate geometry to four equivalent Eu, four equivalent Co, and one Ge atom. The Ge–Ge bond length is 2.80 Å. In the second Ge site, Ge is bonded in a 9-coordinate geometry to four equivalent Eu, four equivalent Co, and one Ge atom. In the third Ge site, Ge is bonded in a 9-coordinate geometry to four equivalent Eu and five Co atoms.

36 MATERIALS SCIENCE↗