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All sourcesNASA NTRSDOE OSTI
DOE OSTI2020

Materials Data on YMnGe by Materials Project

YMnGe crystallizes in the orthorhombic Pnma space group. The structure is three-dimensional. Y is bonded in a 5-coordinate geometry to five equivalent Ge atoms. There are a spread of Y–Ge bond distances ranging from 2.96–2.99 Å. Mn is bonded in a 4-coordinate geometry to four equivalent Ge atoms. There are a spread of Mn–Ge bond distances ranging from 2.56–2.82 Å. Ge is bonded in a 9-coordinate geometry to five equivalent Y and four equivalent Mn atoms.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on Y(MnGe)2 by Materials Project

YMn2Ge2 crystallizes in the tetragonal I4/mmm space group. The structure is three-dimensional. Y is bonded in a 8-coordinate geometry to eight equivalent Ge atoms. All Y–Ge bond lengths are 3.08 Å. Mn is bonded to four equivalent Ge atoms to form a mixture of corner and edge-sharing MnGe4 tetrahedra. All Mn–Ge bond lengths are 2.44 Å. Ge is bonded in a 9-coordinate geometry to four equivalent Y, four equivalent Mn, and one Ge atom. The Ge–Ge bond length is 2.61 Å.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on Y(MnGe)6 by Materials Project

YMn6Ge6 crystallizes in the hexagonal P6/mmm space group. The structure is three-dimensional. Y is bonded to eight Ge atoms to form distorted edge-sharing YGe8 hexagonal bipyramids. There are two shorter (2.81 Å) and six longer (2.99 Å) Y–Ge bond lengths. Mn is bonded in a 12-coordinate geometry to six Ge atoms. There are a spread of Mn–Ge bond distances ranging from 2.52–2.70 Å. There are three inequivalent Ge sites. In the first Ge site, Ge is bonded in a 9-coordinate geometry to three equivalent Y and six equivalent Mn atoms. In the second Ge site, Ge is bonded in a 8-coordinate geometry to one Y, six equivalent Mn, and one Ge atom. The Ge–Ge bond length is 2.53 Å. In the third Ge site, Ge is bonded in a 6-coordinate geometry to six equivalent Mn atoms.

36 MATERIALS SCIENCE↗