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All sourcesNASA NTRSDOE OSTI
DOE OSTI2020

Materials Data on Yb2AgGe by Materials Project

Yb2AgGe is Heusler structured and crystallizes in the cubic Fm-3m space group. The structure is three-dimensional. Yb is bonded in a body-centered cubic geometry to four equivalent Ag and four equivalent Ge atoms. All Yb–Ag bond lengths are 3.12 Å. All Yb–Ge bond lengths are 3.12 Å. Ag is bonded in a body-centered cubic geometry to eight equivalent Yb atoms. Ge is bonded in a body-centered cubic geometry to eight equivalent Yb atoms.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on YbAgGe by Materials Project

YbAgGe crystallizes in the hexagonal P-62m space group. The structure is three-dimensional. Yb is bonded in a 5-coordinate geometry to six equivalent Ag and five Ge atoms. There are two shorter (3.22 Å) and four longer (3.43 Å) Yb–Ag bond lengths. There are one shorter (3.02 Å) and four longer (3.05 Å) Yb–Ge bond lengths. Ag is bonded to six equivalent Yb, two equivalent Ag, and four Ge atoms to form a mixture of distorted face, edge, and corner-sharing AgYb6Ag2Ge4 cuboctahedra. Both Ag–Ag bond lengths are 2.99 Å. There are two shorter (2.74 Å) and two longer (2.80 Å) Ag–Ge bond lengths. There are two inequivalent Ge sites. In the first Ge site, Ge is bonded in a 9-coordinate geometry to three equivalent Yb and six equivalent Ag atoms. In the second Ge site, Ge is bonded in a 9-coordinate geometry to six equivalent Yb and three equivalent Ag atoms.

36 MATERIALS SCIENCE↗