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DOE OSTI2020

Materials Data on EuHO3 by Materials Project

EuHO3 crystallizes in the monoclinic P2_1/m space group. The structure is three-dimensional. Eu is bonded in a 9-coordinate geometry to nine O atoms. There are a spread of Eu–O bond distances ranging from 2.30–2.53 Å. H is bonded in a single-bond geometry to one O atom. The H–O bond length is 0.98 Å. There are three inequivalent O sites. In the first O site, O is bonded in a trigonal non-coplanar geometry to three equivalent Eu atoms. In the second O site, O is bonded in a trigonal non-coplanar geometry to three equivalent Eu atoms. In the third O site, O is bonded in a single-bond geometry to three equivalent Eu and one H atom.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on EuHo3 by Materials Project

Ho3Eu is alpha La-derived structured and crystallizes in the tetragonal I4/mmm space group. The structure is three-dimensional. there are two inequivalent Ho sites. In the first Ho site, Ho is bonded to eight Ho and four equivalent Eu atoms to form HoEu4Ho8 cuboctahedra that share corners with twelve equivalent HoEu4Ho8 cuboctahedra, edges with eight equivalent EuHo12 cuboctahedra, edges with sixteen HoEu4Ho8 cuboctahedra, faces with four equivalent EuHo12 cuboctahedra, and faces with fourteen HoEu4Ho8 cuboctahedra. All Ho–Ho bond lengths are 3.45 Å. All Ho–Eu bond lengths are 3.45 Å. In the second Ho site, Ho is bonded to eight equivalent Ho and four equivalent Eu atoms to form HoEu4Ho8 cuboctahedra that share corners with four equivalent HoEu4Ho8 cuboctahedra, corners with eight equivalent EuHo12 cuboctahedra, edges with twenty-four HoEu4Ho8 cuboctahedra, faces with six equivalent EuHo12 cuboctahedra, and faces with twelve HoEu4Ho8 cuboctahedra. All Ho–Eu bond lengths are 3.45 Å. Eu is bonded to twelve Ho atoms to form EuHo12 cuboctahedra that share corners with four equivalent EuHo12 cuboctahedra, corners with eight equivalent HoEu4Ho8 cuboctahedra, edges with eight equivalent EuHo12 cuboctahedra, edges with sixteen equivalent HoEu4Ho8 cuboctahedra, faces with four equivalent EuHo12 cuboctahedra, and faces with fourteen HoEu4Ho8 cuboctahedra.

36 MATERIALS SCIENCE↗