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All sourcesNASA NTRSDOE OSTI
DOE OSTI2020

Materials Data on Dy(CoGe)2 by Materials Project

DyCo2Ge2 crystallizes in the tetragonal I4/mmm space group. The structure is three-dimensional. Dy is bonded in a 8-coordinate geometry to eight equivalent Co and eight equivalent Ge atoms. All Dy–Co bond lengths are 3.22 Å. All Dy–Ge bond lengths are 3.09 Å. Co is bonded to four equivalent Dy and four equivalent Ge atoms to form a mixture of distorted edge, face, and corner-sharing CoDy4Ge4 tetrahedra. All Co–Ge bond lengths are 2.34 Å. Ge is bonded in a 9-coordinate geometry to four equivalent Dy, four equivalent Co, and one Ge atom. The Ge–Ge bond length is 2.59 Å.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on Dy2Co3Ge5 by Materials Project

Dy2Co3Ge5 crystallizes in the monoclinic C2/c space group. The structure is three-dimensional. Dy is bonded in a 1-coordinate geometry to ten Ge atoms. There are a spread of Dy–Ge bond distances ranging from 2.89–3.23 Å. There are two inequivalent Co sites. In the first Co site, Co is bonded in a 12-coordinate geometry to six Ge atoms. There are a spread of Co–Ge bond distances ranging from 2.41–2.71 Å. In the second Co site, Co is bonded in a 5-coordinate geometry to five Ge atoms. There are a spread of Co–Ge bond distances ranging from 2.32–2.42 Å. There are four inequivalent Ge sites. In the first Ge site, Ge is bonded in a 4-coordinate geometry to four equivalent Dy and four equivalent Co atoms. In the second Ge site, Ge is bonded in a 2-coordinate geometry to four equivalent Dy, three Co, and four Ge atoms. There are two shorter (2.66 Å) and two longer (2.86 Å) Ge–Ge bond lengths. In the third Ge site, Ge is bonded in a 9-coordinate geometry to four equivalent Dy, three Co, and two Ge atoms. The Ge–Ge bond length is 2.65 Å. In the fourth Ge site, Ge is bonded in a 5-coordinate geometry to four equivalent Dy, three Co, and four Ge atoms.

36 MATERIALS SCIENCE↗