Materials Data on SmHo3 by Materials Project
Ho3Sm 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 Sm atoms to form HoSm4Ho8 cuboctahedra that share corners with twelve equivalent HoSm4Ho8 cuboctahedra, edges with eight equivalent SmHo12 cuboctahedra, edges with sixteen HoSm4Ho8 cuboctahedra, faces with four equivalent SmHo12 cuboctahedra, and faces with fourteen HoSm4Ho8 cuboctahedra. All Ho–Ho bond lengths are 3.55 Å. All Ho–Sm bond lengths are 3.55 Å. In the second Ho site, Ho is bonded to eight equivalent Ho and four equivalent Sm atoms to form HoSm4Ho8 cuboctahedra that share corners with four equivalent HoSm4Ho8 cuboctahedra, corners with eight equivalent SmHo12 cuboctahedra, edges with twenty-four HoSm4Ho8 cuboctahedra, faces with six equivalent SmHo12 cuboctahedra, and faces with twelve HoSm4Ho8 cuboctahedra. All Ho–Sm bond lengths are 3.55 Å. Sm is bonded to twelve Ho atoms to form SmHo12 cuboctahedra that share corners with four equivalent SmHo12 cuboctahedra, corners with eight equivalent HoSm4Ho8 cuboctahedra, edges with eight equivalent SmHo12 cuboctahedra, edges with sixteen equivalent HoSm4Ho8 cuboctahedra, faces with four equivalent SmHo12 cuboctahedra, and faces with fourteen HoSm4Ho8 cuboctahedra.