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All sourcesNASA NTRSDOE OSTI
DOE OSTI2020

Materials Data on Ho(GeRh)2 by Materials Project

Ho(RhGe)2 crystallizes in the tetragonal I4/mmm space group. The structure is three-dimensional. Ho is bonded in a 8-coordinate geometry to eight equivalent Rh and eight equivalent Ge atoms. All Ho–Rh bond lengths are 3.31 Å. All Ho–Ge bond lengths are 3.19 Å. Rh is bonded to four equivalent Ho and four equivalent Ge atoms to form a mixture of distorted corner, edge, and face-sharing RhHo4Ge4 tetrahedra. All Rh–Ge bond lengths are 2.46 Å. Ge is bonded in a 9-coordinate geometry to four equivalent Ho, four equivalent Rh, and one Ge atom. The Ge–Ge bond length is 2.51 Å.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on Ho3(GeRh)2 by Materials Project

Ho3(RhGe)2 crystallizes in the orthorhombic Pbcm space group. The structure is three-dimensional. there are two inequivalent Ho sites. In the first Ho site, Ho is bonded in a 9-coordinate geometry to four equivalent Rh and five Ge atoms. There are two shorter (3.02 Å) and two longer (3.05 Å) Ho–Rh bond lengths. There are a spread of Ho–Ge bond distances ranging from 2.99–3.30 Å. In the second Ho site, Ho is bonded in a 7-coordinate geometry to four equivalent Rh and five Ge atoms. There are a spread of Ho–Rh bond distances ranging from 2.90–3.13 Å. There are a spread of Ho–Ge bond distances ranging from 2.98–3.34 Å. Rh is bonded in a 9-coordinate geometry to six Ho and three Ge atoms. There are a spread of Rh–Ge bond distances ranging from 2.54–2.60 Å. There are two inequivalent Ge sites. In the first Ge site, Ge is bonded in a 9-coordinate geometry to seven Ho and two equivalent Rh atoms. In the second Ge site, Ge is bonded in a 12-coordinate geometry to eight Ho and four equivalent Rh atoms.

36 MATERIALS SCIENCE↗